/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:49:40,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:49:40,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:49:40,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:49:40,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:49:40,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:49:40,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:49:40,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:49:40,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:49:40,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:49:40,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:49:40,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:49:40,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:49:40,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:49:40,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:49:40,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:49:40,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:49:40,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:49:40,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:49:40,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:49:40,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:49:40,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:49:40,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:49:40,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:49:40,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:49:40,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:49:40,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:49:40,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:49:40,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:49:40,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:49:40,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:49:40,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:49:40,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:49:40,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:49:40,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:49:40,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:49:40,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:49:40,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:49:40,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:49:40,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:49:40,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:49:40,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:49:40,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:49:40,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:49:40,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:49:40,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:49:40,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:49:40,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:49:40,421 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:49:40,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:49:40,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:49:40,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:49:40,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:49:40,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:49:40,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:49:40,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:49:40,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:49:40,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:49:40,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:49:40,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:49:40,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:49:40,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:49:40,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:49:40,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:49:40,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:49:40,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:49:40,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:49:40,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:49:40,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:49:40,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:49:40,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:49:40,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:49:40,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:49:40,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:49:40,427 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:49:40,427 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:49:40,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:49:40,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:49:40,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:49:40,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:49:40,641 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:49:40,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c [2022-01-10 23:49:40,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd3dc598/bf9d0f440883403e8e421138fdfebfba/FLAG75ae321bf [2022-01-10 23:49:41,118 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:49:41,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c [2022-01-10 23:49:41,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd3dc598/bf9d0f440883403e8e421138fdfebfba/FLAG75ae321bf [2022-01-10 23:49:41,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd3dc598/bf9d0f440883403e8e421138fdfebfba [2022-01-10 23:49:41,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:49:41,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:49:41,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:49:41,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:49:41,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:49:41,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:49:41" (1/1) ... [2022-01-10 23:49:41,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ea4a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:41, skipping insertion in model container [2022-01-10 23:49:41,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:49:41" (1/1) ... [2022-01-10 23:49:41,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:49:41,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:49:41,913 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_spec0_product36.cil.c[12529,12542] [2022-01-10 23:49:42,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:42,101 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:49:42,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:49:42,134 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_spec0_product36.cil.c[12529,12542] [2022-01-10 23:49:42,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:42,179 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:49:42,197 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_spec0_product36.cil.c[12529,12542] [2022-01-10 23:49:42,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:42,252 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:49:42,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42 WrapperNode [2022-01-10 23:49:42,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:49:42,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:49:42,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:49:42,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:49:42,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,355 INFO L137 Inliner]: procedures = 115, calls = 154, calls flagged for inlining = 77, calls inlined = 202, statements flattened = 2707 [2022-01-10 23:49:42,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:49:42,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:49:42,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:49:42,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:49:42,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:49:42,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:49:42,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:49:42,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:49:42,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (1/1) ... [2022-01-10 23:49:42,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:49:42,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:49:42,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:49:42,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:49:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:49:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:49:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:49:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:49:42,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:49:42,631 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:49:42,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:49:43,721 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:49:43,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:49:43,731 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:49:43,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:43 BoogieIcfgContainer [2022-01-10 23:49:43,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:49:43,734 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:49:43,734 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:49:43,735 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:49:43,737 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:43" (1/1) ... [2022-01-10 23:49:44,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:49:44 BasicIcfg [2022-01-10 23:49:44,078 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:49:44,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:49:44,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:49:44,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:49:44,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:49:41" (1/4) ... [2022-01-10 23:49:44,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d9b3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:49:44, skipping insertion in model container [2022-01-10 23:49:44,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:42" (2/4) ... [2022-01-10 23:49:44,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d9b3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:49:44, skipping insertion in model container [2022-01-10 23:49:44,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:43" (3/4) ... [2022-01-10 23:49:44,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d9b3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:49:44, skipping insertion in model container [2022-01-10 23:49:44,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:49:44" (4/4) ... [2022-01-10 23:49:44,084 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product36.cil.cTransformedIcfg [2022-01-10 23:49:44,088 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:49:44,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 23:49:44,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:49:44,129 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:49:44,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 23:49:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 540 states, 533 states have (on average 1.6135084427767354) internal successors, (860), 539 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 23:49:44,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:44,159 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] [2022-01-10 23:49:44,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2120385324, now seen corresponding path program 1 times [2022-01-10 23:49:44,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:44,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659207527] [2022-01-10 23:49:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:44,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:44,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659207527] [2022-01-10 23:49:44,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659207527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:44,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:44,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:49:44,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381283027] [2022-01-10 23:49:44,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:44,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:49:44,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:49:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:49:44,528 INFO L87 Difference]: Start difference. First operand has 540 states, 533 states have (on average 1.6135084427767354) internal successors, (860), 539 states have internal predecessors, (860), 0 states have call successors, (0), 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 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:44,582 INFO L93 Difference]: Finished difference Result 973 states and 1533 transitions. [2022-01-10 23:49:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:49:44,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 23:49:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:44,596 INFO L225 Difference]: With dead ends: 973 [2022-01-10 23:49:44,596 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 23:49:44,600 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 23:49:44,605 INFO L933 BasicCegarLoop]: 846 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, 846 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 23:49:44,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 23:49:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-01-10 23:49:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 487 states have (on average 1.6180698151950719) internal successors, (788), 492 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 788 transitions. [2022-01-10 23:49:44,656 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 788 transitions. Word has length 46 [2022-01-10 23:49:44,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:44,656 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 788 transitions. [2022-01-10 23:49:44,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 788 transitions. [2022-01-10 23:49:44,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 23:49:44,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:44,658 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] [2022-01-10 23:49:44,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:49:44,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1540401456, now seen corresponding path program 1 times [2022-01-10 23:49:44,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:44,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591032489] [2022-01-10 23:49:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:44,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:44,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:44,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591032489] [2022-01-10 23:49:44,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591032489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:44,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:44,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:44,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609339773] [2022-01-10 23:49:44,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:44,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:44,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:44,843 INFO L87 Difference]: Start difference. First operand 493 states and 788 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:44,931 INFO L93 Difference]: Finished difference Result 972 states and 1556 transitions. [2022-01-10 23:49:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:44,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-10 23:49:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:44,938 INFO L225 Difference]: With dead ends: 972 [2022-01-10 23:49:44,938 INFO L226 Difference]: Without dead ends: 493 [2022-01-10 23:49:44,939 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 23:49:44,940 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 771 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:44,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 776 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:44,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-10 23:49:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2022-01-10 23:49:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 487 states have (on average 1.6139630390143738) internal successors, (786), 492 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 786 transitions. [2022-01-10 23:49:44,974 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 786 transitions. Word has length 47 [2022-01-10 23:49:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:44,975 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 786 transitions. [2022-01-10 23:49:44,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 786 transitions. [2022-01-10 23:49:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 23:49:44,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:44,976 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] [2022-01-10 23:49:44,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:49:44,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash -637014126, now seen corresponding path program 1 times [2022-01-10 23:49:44,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:44,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751150218] [2022-01-10 23:49:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:44,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:45,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:45,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751150218] [2022-01-10 23:49:45,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751150218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:45,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:45,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:45,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835838224] [2022-01-10 23:49:45,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:45,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:45,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:45,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:45,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:45,101 INFO L87 Difference]: Start difference. First operand 493 states and 786 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:45,148 INFO L93 Difference]: Finished difference Result 971 states and 1550 transitions. [2022-01-10 23:49:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:45,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 23:49:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:45,151 INFO L225 Difference]: With dead ends: 971 [2022-01-10 23:49:45,152 INFO L226 Difference]: Without dead ends: 497 [2022-01-10 23:49:45,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:45,158 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 792 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 23:49:45,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 792 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-10 23:49:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 493. [2022-01-10 23:49:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 487 states have (on average 1.6119096509240247) internal successors, (785), 492 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 785 transitions. [2022-01-10 23:49:45,194 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 785 transitions. Word has length 49 [2022-01-10 23:49:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:45,194 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 785 transitions. [2022-01-10 23:49:45,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 785 transitions. [2022-01-10 23:49:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 23:49:45,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:45,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:45,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:49:45,201 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1383585707, now seen corresponding path program 1 times [2022-01-10 23:49:45,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:45,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756237521] [2022-01-10 23:49:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:45,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:45,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756237521] [2022-01-10 23:49:45,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756237521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:45,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:45,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:45,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632721949] [2022-01-10 23:49:45,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:45,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:45,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:45,423 INFO L87 Difference]: Start difference. First operand 493 states and 785 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:45,671 INFO L93 Difference]: Finished difference Result 1873 states and 2983 transitions. [2022-01-10 23:49:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:49:45,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-10 23:49:45,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:45,677 INFO L225 Difference]: With dead ends: 1873 [2022-01-10 23:49:45,678 INFO L226 Difference]: Without dead ends: 1568 [2022-01-10 23:49:45,679 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 23:49:45,687 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 2381 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:45,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2381 Valid, 3318 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2022-01-10 23:49:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 950. [2022-01-10 23:49:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 944 states have (on average 1.6122881355932204) internal successors, (1522), 949 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1522 transitions. [2022-01-10 23:49:45,739 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1522 transitions. Word has length 50 [2022-01-10 23:49:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:45,741 INFO L470 AbstractCegarLoop]: Abstraction has 950 states and 1522 transitions. [2022-01-10 23:49:45,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1522 transitions. [2022-01-10 23:49:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 23:49:45,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:45,742 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] [2022-01-10 23:49:45,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:49:45,742 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 42797512, now seen corresponding path program 1 times [2022-01-10 23:49:45,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:45,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677033532] [2022-01-10 23:49:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:45,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:45,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:45,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677033532] [2022-01-10 23:49:45,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677033532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:45,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:45,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:45,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180431862] [2022-01-10 23:49:45,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:45,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:45,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:45,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:45,847 INFO L87 Difference]: Start difference. First operand 950 states and 1522 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:46,114 INFO L93 Difference]: Finished difference Result 3662 states and 5850 transitions. [2022-01-10 23:49:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:49:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 23:49:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:46,126 INFO L225 Difference]: With dead ends: 3662 [2022-01-10 23:49:46,126 INFO L226 Difference]: Without dead ends: 3086 [2022-01-10 23:49:46,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:46,128 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 1890 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 3697 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:46,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 3697 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3086 states. [2022-01-10 23:49:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3086 to 1850. [2022-01-10 23:49:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1844 states have (on average 1.6203904555314534) internal successors, (2988), 1849 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2988 transitions. [2022-01-10 23:49:46,207 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2988 transitions. Word has length 51 [2022-01-10 23:49:46,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:46,211 INFO L470 AbstractCegarLoop]: Abstraction has 1850 states and 2988 transitions. [2022-01-10 23:49:46,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2988 transitions. [2022-01-10 23:49:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 23:49:46,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:46,213 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] [2022-01-10 23:49:46,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:49:46,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1800387676, now seen corresponding path program 1 times [2022-01-10 23:49:46,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:46,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592106268] [2022-01-10 23:49:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:46,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:46,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:46,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592106268] [2022-01-10 23:49:46,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592106268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:46,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:46,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:46,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632236865] [2022-01-10 23:49:46,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:46,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:46,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:46,340 INFO L87 Difference]: Start difference. First operand 1850 states and 2988 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:46,749 INFO L93 Difference]: Finished difference Result 7031 states and 11285 transitions. [2022-01-10 23:49:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:49:46,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 23:49:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:46,768 INFO L225 Difference]: With dead ends: 7031 [2022-01-10 23:49:46,769 INFO L226 Difference]: Without dead ends: 5426 [2022-01-10 23:49:46,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:46,774 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 1889 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3697 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:46,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 3697 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2022-01-10 23:49:46,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 3278. [2022-01-10 23:49:46,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3272 states have (on average 1.6286674816625917) internal successors, (5329), 3277 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5329 transitions. [2022-01-10 23:49:46,928 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5329 transitions. Word has length 52 [2022-01-10 23:49:46,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:46,928 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 5329 transitions. [2022-01-10 23:49:46,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5329 transitions. [2022-01-10 23:49:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:49:46,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:46,930 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:46,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:49:46,931 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash -247184035, now seen corresponding path program 1 times [2022-01-10 23:49:46,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109113400] [2022-01-10 23:49:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:46,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:47,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109113400] [2022-01-10 23:49:47,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109113400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:47,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:47,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:47,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552965089] [2022-01-10 23:49:47,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:47,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:47,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:47,004 INFO L87 Difference]: Start difference. First operand 3278 states and 5329 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 23:49:47,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:47,210 INFO L93 Difference]: Finished difference Result 9782 states and 15915 transitions. [2022-01-10 23:49:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:47,211 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 23:49:47,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:47,232 INFO L225 Difference]: With dead ends: 9782 [2022-01-10 23:49:47,233 INFO L226 Difference]: Without dead ends: 6526 [2022-01-10 23:49:47,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:47,240 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 750 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:47,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 1560 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2022-01-10 23:49:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 3902. [2022-01-10 23:49:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3902 states, 3896 states have (on average 1.6627310061601643) internal successors, (6478), 3901 states have internal predecessors, (6478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 6478 transitions. [2022-01-10 23:49:47,438 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 6478 transitions. Word has length 63 [2022-01-10 23:49:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:47,438 INFO L470 AbstractCegarLoop]: Abstraction has 3902 states and 6478 transitions. [2022-01-10 23:49:47,438 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 23:49:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 6478 transitions. [2022-01-10 23:49:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:49:47,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:47,441 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:47,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:49:47,441 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -81601122, now seen corresponding path program 1 times [2022-01-10 23:49:47,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811787575] [2022-01-10 23:49:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:47,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:47,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:47,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811787575] [2022-01-10 23:49:47,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811787575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:47,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:47,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:47,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445906324] [2022-01-10 23:49:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:47,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:47,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:47,497 INFO L87 Difference]: Start difference. First operand 3902 states and 6478 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:47,788 INFO L93 Difference]: Finished difference Result 11566 states and 19218 transitions. [2022-01-10 23:49:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:49:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:47,826 INFO L225 Difference]: With dead ends: 11566 [2022-01-10 23:49:47,826 INFO L226 Difference]: Without dead ends: 7686 [2022-01-10 23:49:47,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:47,837 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 748 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:47,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 1552 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7686 states. [2022-01-10 23:49:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7686 to 5062. [2022-01-10 23:49:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5062 states, 5056 states have (on average 1.7056962025316456) internal successors, (8624), 5061 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 8624 transitions. [2022-01-10 23:49:48,063 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 8624 transitions. Word has length 64 [2022-01-10 23:49:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:48,063 INFO L470 AbstractCegarLoop]: Abstraction has 5062 states and 8624 transitions. [2022-01-10 23:49:48,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 8624 transitions. [2022-01-10 23:49:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:49:48,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:48,067 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:48,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:49:48,067 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1957847544, now seen corresponding path program 1 times [2022-01-10 23:49:48,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:48,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131936906] [2022-01-10 23:49:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:48,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:48,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:48,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131936906] [2022-01-10 23:49:48,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131936906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:48,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:48,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:48,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847009061] [2022-01-10 23:49:48,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:48,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:48,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:48,114 INFO L87 Difference]: Start difference. First operand 5062 states and 8624 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:48,501 INFO L93 Difference]: Finished difference Result 15110 states and 25752 transitions. [2022-01-10 23:49:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:48,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:49:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:48,522 INFO L225 Difference]: With dead ends: 15110 [2022-01-10 23:49:48,522 INFO L226 Difference]: Without dead ends: 10070 [2022-01-10 23:49:48,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:48,533 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 746 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:48,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1560 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10070 states. [2022-01-10 23:49:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10070 to 7446. [2022-01-10 23:49:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7446 states, 7440 states have (on average 1.7467741935483871) internal successors, (12996), 7445 states have internal predecessors, (12996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7446 states to 7446 states and 12996 transitions. [2022-01-10 23:49:48,781 INFO L78 Accepts]: Start accepts. Automaton has 7446 states and 12996 transitions. Word has length 65 [2022-01-10 23:49:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:48,781 INFO L470 AbstractCegarLoop]: Abstraction has 7446 states and 12996 transitions. [2022-01-10 23:49:48,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:48,781 INFO L276 IsEmpty]: Start isEmpty. Operand 7446 states and 12996 transitions. [2022-01-10 23:49:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:49:48,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:48,786 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:48,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:49:48,786 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:48,786 INFO L85 PathProgramCache]: Analyzing trace with hash -36284157, now seen corresponding path program 1 times [2022-01-10 23:49:48,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:48,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620363630] [2022-01-10 23:49:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:48,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:48,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620363630] [2022-01-10 23:49:48,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620363630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:48,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:48,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:48,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107582023] [2022-01-10 23:49:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:48,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:48,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:48,854 INFO L87 Difference]: Start difference. First operand 7446 states and 12996 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:49,180 INFO L93 Difference]: Finished difference Result 22230 states and 38804 transitions. [2022-01-10 23:49:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:49,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:49:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:49,280 INFO L225 Difference]: With dead ends: 22230 [2022-01-10 23:49:49,281 INFO L226 Difference]: Without dead ends: 14806 [2022-01-10 23:49:49,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:49,290 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 744 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:49,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 1560 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14806 states. [2022-01-10 23:49:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14806 to 12182. [2022-01-10 23:49:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12182 states, 12176 states have (on average 1.7775952693823915) internal successors, (21644), 12181 states have internal predecessors, (21644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12182 states to 12182 states and 21644 transitions. [2022-01-10 23:49:49,630 INFO L78 Accepts]: Start accepts. Automaton has 12182 states and 21644 transitions. Word has length 66 [2022-01-10 23:49:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:49,631 INFO L470 AbstractCegarLoop]: Abstraction has 12182 states and 21644 transitions. [2022-01-10 23:49:49,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 12182 states and 21644 transitions. [2022-01-10 23:49:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:49:49,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:49,638 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:49,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:49:49,640 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1653765073, now seen corresponding path program 1 times [2022-01-10 23:49:49,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:49,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699315311] [2022-01-10 23:49:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:49,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:49,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:49,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699315311] [2022-01-10 23:49:49,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699315311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:49,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:49,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:49,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255665606] [2022-01-10 23:49:49,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:49,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:49,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:49,722 INFO L87 Difference]: Start difference. First operand 12182 states and 21644 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:50,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:50,347 INFO L93 Difference]: Finished difference Result 36374 states and 64620 transitions. [2022-01-10 23:49:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:50,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:49:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:50,401 INFO L225 Difference]: With dead ends: 36374 [2022-01-10 23:49:50,402 INFO L226 Difference]: Without dead ends: 24214 [2022-01-10 23:49:50,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:50,418 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 742 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:50,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1560 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24214 states. [2022-01-10 23:49:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24214 to 21590. [2022-01-10 23:49:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21590 states, 21584 states have (on average 1.795218680504077) internal successors, (38748), 21589 states have internal predecessors, (38748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21590 states to 21590 states and 38748 transitions. [2022-01-10 23:49:51,095 INFO L78 Accepts]: Start accepts. Automaton has 21590 states and 38748 transitions. Word has length 67 [2022-01-10 23:49:51,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:51,095 INFO L470 AbstractCegarLoop]: Abstraction has 21590 states and 38748 transitions. [2022-01-10 23:49:51,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 21590 states and 38748 transitions. [2022-01-10 23:49:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:49:51,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:51,108 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:51,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:49:51,110 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1558962859, now seen corresponding path program 1 times [2022-01-10 23:49:51,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:51,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743133719] [2022-01-10 23:49:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:51,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:51,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:51,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743133719] [2022-01-10 23:49:51,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743133719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:51,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:51,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:51,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602045602] [2022-01-10 23:49:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:51,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:49:51,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:49:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:49:51,196 INFO L87 Difference]: Start difference. First operand 21590 states and 38748 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:51,462 INFO L93 Difference]: Finished difference Result 23832 states and 42766 transitions. [2022-01-10 23:49:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:49:51,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:49:51,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:51,493 INFO L225 Difference]: With dead ends: 23832 [2022-01-10 23:49:51,494 INFO L226 Difference]: Without dead ends: 12846 [2022-01-10 23:49:51,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:49:51,510 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 1493 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:51,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1060 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12846 states. [2022-01-10 23:49:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12846 to 10638. [2022-01-10 23:49:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10632 states have (on average 1.7808502633559067) internal successors, (18934), 10637 states have internal predecessors, (18934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 18934 transitions. [2022-01-10 23:49:51,894 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 18934 transitions. Word has length 68 [2022-01-10 23:49:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:51,895 INFO L470 AbstractCegarLoop]: Abstraction has 10638 states and 18934 transitions. [2022-01-10 23:49:51,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 18934 transitions. [2022-01-10 23:49:51,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:49:51,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:51,902 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:51,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:49:51,902 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:51,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 616089612, now seen corresponding path program 1 times [2022-01-10 23:49:51,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:51,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83669192] [2022-01-10 23:49:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:51,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:49:52,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:52,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83669192] [2022-01-10 23:49:52,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83669192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:52,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:52,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:49:52,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109907218] [2022-01-10 23:49:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:52,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:49:52,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:49:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:52,036 INFO L87 Difference]: Start difference. First operand 10638 states and 18934 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 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 23:49:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:53,679 INFO L93 Difference]: Finished difference Result 19029 states and 31857 transitions. [2022-01-10 23:49:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 23:49:53,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 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 70 [2022-01-10 23:49:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:53,707 INFO L225 Difference]: With dead ends: 19029 [2022-01-10 23:49:53,708 INFO L226 Difference]: Without dead ends: 18074 [2022-01-10 23:49:53,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2022-01-10 23:49:53,715 INFO L933 BasicCegarLoop]: 1745 mSDtfsCounter, 6331 mSDsluCounter, 9078 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6331 SdHoareTripleChecker+Valid, 10823 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:53,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6331 Valid, 10823 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 23:49:53,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18074 states. [2022-01-10 23:49:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18074 to 11688. [2022-01-10 23:49:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11688 states, 11682 states have (on average 1.7599726074302346) internal successors, (20560), 11687 states have internal predecessors, (20560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11688 states to 11688 states and 20560 transitions. [2022-01-10 23:49:54,230 INFO L78 Accepts]: Start accepts. Automaton has 11688 states and 20560 transitions. Word has length 70 [2022-01-10 23:49:54,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:54,230 INFO L470 AbstractCegarLoop]: Abstraction has 11688 states and 20560 transitions. [2022-01-10 23:49:54,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 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 23:49:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11688 states and 20560 transitions. [2022-01-10 23:49:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:49:54,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:54,238 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:54,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:49:54,238 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:54,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:54,239 INFO L85 PathProgramCache]: Analyzing trace with hash -737292057, now seen corresponding path program 1 times [2022-01-10 23:49:54,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:54,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605745646] [2022-01-10 23:49:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:54,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:49:54,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:54,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605745646] [2022-01-10 23:49:54,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605745646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:54,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:54,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:54,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222552777] [2022-01-10 23:49:54,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:54,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:54,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:54,352 INFO L87 Difference]: Start difference. First operand 11688 states and 20560 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 23:49:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:55,403 INFO L93 Difference]: Finished difference Result 17072 states and 28818 transitions. [2022-01-10 23:49:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:49:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 71 [2022-01-10 23:49:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:55,427 INFO L225 Difference]: With dead ends: 17072 [2022-01-10 23:49:55,428 INFO L226 Difference]: Without dead ends: 15262 [2022-01-10 23:49:55,434 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 23:49:55,434 INFO L933 BasicCegarLoop]: 1417 mSDtfsCounter, 1845 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 4289 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:55,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 4289 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:49:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15262 states. [2022-01-10 23:49:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15262 to 11868. [2022-01-10 23:49:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11868 states, 11862 states have (on average 1.7484403979092902) internal successors, (20740), 11867 states have internal predecessors, (20740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11868 states to 11868 states and 20740 transitions. [2022-01-10 23:49:55,821 INFO L78 Accepts]: Start accepts. Automaton has 11868 states and 20740 transitions. Word has length 71 [2022-01-10 23:49:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:55,822 INFO L470 AbstractCegarLoop]: Abstraction has 11868 states and 20740 transitions. [2022-01-10 23:49:55,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 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 23:49:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 11868 states and 20740 transitions. [2022-01-10 23:49:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:49:55,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:55,829 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:55,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:49:55,829 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:55,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2090601754, now seen corresponding path program 1 times [2022-01-10 23:49:55,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:55,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050871267] [2022-01-10 23:49:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:55,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:49:55,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:55,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050871267] [2022-01-10 23:49:55,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050871267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:55,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:55,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:49:55,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537978304] [2022-01-10 23:49:55,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:55,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:49:55,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:55,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:49:55,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:55,906 INFO L87 Difference]: Start difference. First operand 11868 states and 20740 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:49:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:56,510 INFO L93 Difference]: Finished difference Result 15092 states and 25641 transitions. [2022-01-10 23:49:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:49:56,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 71 [2022-01-10 23:49:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:56,531 INFO L225 Difference]: With dead ends: 15092 [2022-01-10 23:49:56,531 INFO L226 Difference]: Without dead ends: 12898 [2022-01-10 23:49:56,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:49:56,540 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 3156 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:56,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3156 Valid, 2491 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:56,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12898 states. [2022-01-10 23:49:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12898 to 11832. [2022-01-10 23:49:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11832 states, 11826 states have (on average 1.7479282935903941) internal successors, (20671), 11831 states have internal predecessors, (20671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11832 states to 11832 states and 20671 transitions. [2022-01-10 23:49:56,938 INFO L78 Accepts]: Start accepts. Automaton has 11832 states and 20671 transitions. Word has length 71 [2022-01-10 23:49:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:56,938 INFO L470 AbstractCegarLoop]: Abstraction has 11832 states and 20671 transitions. [2022-01-10 23:49:56,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 23:49:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 11832 states and 20671 transitions. [2022-01-10 23:49:56,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:49:56,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:56,946 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:56,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:49:56,946 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:49:56,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1322962534, now seen corresponding path program 1 times [2022-01-10 23:49:56,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:56,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448388702] [2022-01-10 23:49:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:56,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:49:57,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:57,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448388702] [2022-01-10 23:49:57,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448388702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:57,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:57,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:57,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465207868] [2022-01-10 23:49:57,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:57,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:49:57,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:49:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:49:57,013 INFO L87 Difference]: Start difference. First operand 11832 states and 20671 transitions. Second operand has 4 states, 4 states have (on average 17.5) 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 23:49:57,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:57,543 INFO L93 Difference]: Finished difference Result 13086 states and 22588 transitions. [2022-01-10 23:49:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:49:57,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) 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 71 [2022-01-10 23:49:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:57,544 INFO L225 Difference]: With dead ends: 13086 [2022-01-10 23:49:57,544 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 23:49:57,553 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 23:49:57,554 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 834 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:57,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2422 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 23:49:57,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 23:49:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 23:49:57,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2022-01-10 23:49:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:57,554 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 23:49:57,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) 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 23:49:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 23:49:57,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 23:49:57,556 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-10 23:49:57,560 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-10 23:49:57,560 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-01-10 23:49:57,560 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-10 23:49:57,560 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-10 23:49:57,560 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-10 23:49:57,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:49:57,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 23:50:14,676 WARN L228 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 142 DAG size of output: 142 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)