/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:19:39,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:19:39,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:19:39,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:19:39,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:19:39,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:19:39,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:19:39,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:19:39,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:19:39,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:19:39,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:19:39,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:19:39,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:19:39,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:19:39,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:19:39,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:19:39,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:19:39,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:19:39,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:19:39,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:19:39,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:19:39,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:19:39,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:19:39,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:19:39,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:19:39,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:19:39,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:19:39,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:19:39,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:19:39,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:19:39,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:19:39,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:19:39,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:19:39,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:19:39,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:19:39,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:19:39,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:19:39,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:19:39,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:19:39,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:19:39,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:19:39,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:19:39,262 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:19:39,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:19:39,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:19:39,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:19:39,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:19:39,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:19:39,264 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:19:39,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:19:39,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:19:39,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:19:39,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:19:39,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:19:39,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:19:39,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:19:39,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:19:39,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:19:39,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:19:39,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:19:39,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:19:39,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:19:39,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:19:39,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:19:39,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:19:39,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:19:39,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:19:39,269 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:19:39,269 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:19:39,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:19:39,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:19:39,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:19:39,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:19:39,518 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:19:39,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c [2022-01-10 12:19:39,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e55316d/c4e1a1adec1d4ca586311f06bcf29da7/FLAG295c93700 [2022-01-10 12:19:40,101 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:19:40,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c [2022-01-10 12:19:40,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e55316d/c4e1a1adec1d4ca586311f06bcf29da7/FLAG295c93700 [2022-01-10 12:19:40,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e55316d/c4e1a1adec1d4ca586311f06bcf29da7 [2022-01-10 12:19:40,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:19:40,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:19:40,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:19:40,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:19:40,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:19:40,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:40" (1/1) ... [2022-01-10 12:19:40,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496afe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:40, skipping insertion in model container [2022-01-10 12:19:40,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:19:40" (1/1) ... [2022-01-10 12:19:40,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:19:40,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:19:40,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c[6103,6116] [2022-01-10 12:19:40,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:40,952 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:19:40,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:19:40,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c[6103,6116] [2022-01-10 12:19:41,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:41,093 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:19:41,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product32.cil.c[6103,6116] [2022-01-10 12:19:41,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:19:41,209 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:19:41,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41 WrapperNode [2022-01-10 12:19:41,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:19:41,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:19:41,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:19:41,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:19:41,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,390 INFO L137 Inliner]: procedures = 136, calls = 234, calls flagged for inlining = 143, calls inlined = 346, statements flattened = 5210 [2022-01-10 12:19:41,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:19:41,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:19:41,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:19:41,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:19:41,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:19:41,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:19:41,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:19:41,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:19:41,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (1/1) ... [2022-01-10 12:19:41,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:19:41,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:19:41,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:19:41,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:19:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:19:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:19:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:19:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:19:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:19:41,833 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:19:41,834 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:19:44,004 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:19:44,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:19:44,021 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:19:44,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:44 BoogieIcfgContainer [2022-01-10 12:19:44,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:19:44,028 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:19:44,028 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:19:44,030 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:19:44,033 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:44" (1/1) ... [2022-01-10 12:19:44,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:19:44 BasicIcfg [2022-01-10 12:19:44,487 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:19:44,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:19:44,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:19:44,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:19:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:19:40" (1/4) ... [2022-01-10 12:19:44,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6382066d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:44, skipping insertion in model container [2022-01-10 12:19:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:19:41" (2/4) ... [2022-01-10 12:19:44,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6382066d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:19:44, skipping insertion in model container [2022-01-10 12:19:44,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:19:44" (3/4) ... [2022-01-10 12:19:44,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6382066d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:19:44, skipping insertion in model container [2022-01-10 12:19:44,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:19:44" (4/4) ... [2022-01-10 12:19:44,493 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product32.cil.cTransformedIcfg [2022-01-10 12:19:44,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:19:44,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 12:19:44,537 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:19:44,542 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:19:44,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 12:19:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 1170 states, 1163 states have (on average 1.6835769561478935) internal successors, (1958), 1169 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:19:44,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:44,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:44,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash -841945816, now seen corresponding path program 1 times [2022-01-10 12:19:44,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:44,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294274923] [2022-01-10 12:19:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:44,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:44,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:44,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294274923] [2022-01-10 12:19:44,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294274923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:44,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:44,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:19:44,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396845079] [2022-01-10 12:19:44,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:44,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:19:44,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:45,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:19:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:19:45,024 INFO L87 Difference]: Start difference. First operand has 1170 states, 1163 states have (on average 1.6835769561478935) internal successors, (1958), 1169 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:45,109 INFO L93 Difference]: Finished difference Result 2031 states and 3369 transitions. [2022-01-10 12:19:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:19:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 12:19:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:45,136 INFO L225 Difference]: With dead ends: 2031 [2022-01-10 12:19:45,136 INFO L226 Difference]: Without dead ends: 1038 [2022-01-10 12:19:45,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:19:45,149 INFO L933 BasicCegarLoop]: 1944 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, 1944 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:45,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:45,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-01-10 12:19:45,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2022-01-10 12:19:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1032 states have (on average 1.692829457364341) internal successors, (1747), 1037 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1747 transitions. [2022-01-10 12:19:45,280 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1747 transitions. Word has length 62 [2022-01-10 12:19:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:45,280 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1747 transitions. [2022-01-10 12:19:45,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1747 transitions. [2022-01-10 12:19:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:19:45,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:45,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:45,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:19:45,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:45,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1419987872, now seen corresponding path program 1 times [2022-01-10 12:19:45,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:45,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428012487] [2022-01-10 12:19:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:45,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:45,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428012487] [2022-01-10 12:19:45,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428012487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:45,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:45,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:19:45,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014478070] [2022-01-10 12:19:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:45,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:19:45,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:19:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:45,537 INFO L87 Difference]: Start difference. First operand 1038 states and 1747 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:45,722 INFO L93 Difference]: Finished difference Result 2057 states and 3466 transitions. [2022-01-10 12:19:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:19:45,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 12:19:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:45,737 INFO L225 Difference]: With dead ends: 2057 [2022-01-10 12:19:45,737 INFO L226 Difference]: Without dead ends: 1038 [2022-01-10 12:19:45,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:45,744 INFO L933 BasicCegarLoop]: 1726 mSDtfsCounter, 1722 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:45,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1722 Valid, 1739 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-01-10 12:19:45,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2022-01-10 12:19:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1032 states have (on average 1.690891472868217) internal successors, (1745), 1037 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1745 transitions. [2022-01-10 12:19:45,796 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1745 transitions. Word has length 63 [2022-01-10 12:19:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:45,797 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1745 transitions. [2022-01-10 12:19:45,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1745 transitions. [2022-01-10 12:19:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:19:45,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:45,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:45,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:19:45,808 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 767992288, now seen corresponding path program 1 times [2022-01-10 12:19:45,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:45,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691021378] [2022-01-10 12:19:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:45,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:46,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:46,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691021378] [2022-01-10 12:19:46,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691021378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:46,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:46,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:46,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265934747] [2022-01-10 12:19:46,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:46,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:46,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:46,010 INFO L87 Difference]: Start difference. First operand 1038 states and 1745 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:46,372 INFO L93 Difference]: Finished difference Result 5058 states and 8521 transitions. [2022-01-10 12:19:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:19:46,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:19:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:46,389 INFO L225 Difference]: With dead ends: 5058 [2022-01-10 12:19:46,389 INFO L226 Difference]: Without dead ends: 4044 [2022-01-10 12:19:46,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:19:46,398 INFO L933 BasicCegarLoop]: 3413 mSDtfsCounter, 8508 mSDsluCounter, 5107 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8508 SdHoareTripleChecker+Valid, 8520 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:46,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8508 Valid, 8520 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2022-01-10 12:19:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 1038. [2022-01-10 12:19:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1032 states have (on average 1.689922480620155) internal successors, (1744), 1037 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1744 transitions. [2022-01-10 12:19:46,508 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1744 transitions. Word has length 65 [2022-01-10 12:19:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:46,509 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1744 transitions. [2022-01-10 12:19:46,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1744 transitions. [2022-01-10 12:19:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:19:46,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:46,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:46,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:19:46,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:46,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1798153330, now seen corresponding path program 1 times [2022-01-10 12:19:46,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:46,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665492161] [2022-01-10 12:19:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:46,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:46,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:46,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665492161] [2022-01-10 12:19:46,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665492161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:46,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:46,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:19:46,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594845225] [2022-01-10 12:19:46,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:46,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:19:46,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:46,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:19:46,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:46,652 INFO L87 Difference]: Start difference. First operand 1038 states and 1744 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:46,724 INFO L93 Difference]: Finished difference Result 2061 states and 3466 transitions. [2022-01-10 12:19:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:19:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:19:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:46,730 INFO L225 Difference]: With dead ends: 2061 [2022-01-10 12:19:46,731 INFO L226 Difference]: Without dead ends: 1052 [2022-01-10 12:19:46,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:19:46,740 INFO L933 BasicCegarLoop]: 1758 mSDtfsCounter, 1723 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:46,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 1780 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:19:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-01-10 12:19:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1038. [2022-01-10 12:19:46,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1032 states have (on average 1.688953488372093) internal successors, (1743), 1037 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1743 transitions. [2022-01-10 12:19:46,798 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1743 transitions. Word has length 66 [2022-01-10 12:19:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:46,798 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1743 transitions. [2022-01-10 12:19:46,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1743 transitions. [2022-01-10 12:19:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:19:46,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:46,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:46,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:19:46,800 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:46,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1650719103, now seen corresponding path program 1 times [2022-01-10 12:19:46,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:46,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344480350] [2022-01-10 12:19:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:46,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:46,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:46,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344480350] [2022-01-10 12:19:46,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344480350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:46,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:46,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:46,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097624238] [2022-01-10 12:19:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:46,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:46,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:46,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:46,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:46,914 INFO L87 Difference]: Start difference. First operand 1038 states and 1743 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:47,163 INFO L93 Difference]: Finished difference Result 3048 states and 5129 transitions. [2022-01-10 12:19:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:19:47,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:19:47,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:47,170 INFO L225 Difference]: With dead ends: 3048 [2022-01-10 12:19:47,171 INFO L226 Difference]: Without dead ends: 2044 [2022-01-10 12:19:47,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:47,174 INFO L933 BasicCegarLoop]: 1752 mSDtfsCounter, 8431 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8431 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:47,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8431 Valid, 3518 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2022-01-10 12:19:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1038. [2022-01-10 12:19:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1032 states have (on average 1.687015503875969) internal successors, (1741), 1037 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1741 transitions. [2022-01-10 12:19:47,242 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1741 transitions. Word has length 67 [2022-01-10 12:19:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:47,243 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1741 transitions. [2022-01-10 12:19:47,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1741 transitions. [2022-01-10 12:19:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:19:47,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:47,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:47,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:19:47,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:47,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1052643618, now seen corresponding path program 1 times [2022-01-10 12:19:47,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:47,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653132101] [2022-01-10 12:19:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:47,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:47,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:47,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653132101] [2022-01-10 12:19:47,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653132101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:47,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:47,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:47,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627170994] [2022-01-10 12:19:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:47,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:47,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:47,377 INFO L87 Difference]: Start difference. First operand 1038 states and 1741 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:48,296 INFO L93 Difference]: Finished difference Result 8232 states and 13602 transitions. [2022-01-10 12:19:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:48,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:19:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:48,328 INFO L225 Difference]: With dead ends: 8232 [2022-01-10 12:19:48,329 INFO L226 Difference]: Without dead ends: 7516 [2022-01-10 12:19:48,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:48,334 INFO L933 BasicCegarLoop]: 3341 mSDtfsCounter, 14242 mSDsluCounter, 11867 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14242 SdHoareTripleChecker+Valid, 15208 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:48,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14242 Valid, 15208 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:19:48,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2022-01-10 12:19:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 1760. [2022-01-10 12:19:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1754 states have (on average 1.6898517673888256) internal successors, (2964), 1759 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2964 transitions. [2022-01-10 12:19:48,536 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2964 transitions. Word has length 69 [2022-01-10 12:19:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:48,536 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2964 transitions. [2022-01-10 12:19:48,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2964 transitions. [2022-01-10 12:19:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:19:48,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:48,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:48,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:19:48,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1439717629, now seen corresponding path program 1 times [2022-01-10 12:19:48,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:48,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485038237] [2022-01-10 12:19:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:48,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:48,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:48,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485038237] [2022-01-10 12:19:48,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485038237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:48,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:48,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:48,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440819549] [2022-01-10 12:19:48,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:48,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:48,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:48,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:48,655 INFO L87 Difference]: Start difference. First operand 1760 states and 2964 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 12:19:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:49,006 INFO L93 Difference]: Finished difference Result 3823 states and 6330 transitions. [2022-01-10 12:19:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:19:49,007 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 70 [2022-01-10 12:19:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:49,017 INFO L225 Difference]: With dead ends: 3823 [2022-01-10 12:19:49,017 INFO L226 Difference]: Without dead ends: 2679 [2022-01-10 12:19:49,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:49,019 INFO L933 BasicCegarLoop]: 1723 mSDtfsCounter, 6021 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6021 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:49,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6021 Valid, 3754 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2022-01-10 12:19:49,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 1760. [2022-01-10 12:19:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1754 states have (on average 1.6875712656784492) internal successors, (2960), 1759 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2960 transitions. [2022-01-10 12:19:49,157 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2960 transitions. Word has length 70 [2022-01-10 12:19:49,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:49,157 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2960 transitions. [2022-01-10 12:19:49,157 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 12:19:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2960 transitions. [2022-01-10 12:19:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:19:49,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:49,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:49,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:19:49,160 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1744043208, now seen corresponding path program 1 times [2022-01-10 12:19:49,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:49,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030599473] [2022-01-10 12:19:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:49,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:49,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:49,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030599473] [2022-01-10 12:19:49,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030599473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:49,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:49,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:19:49,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414993863] [2022-01-10 12:19:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:49,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:19:49,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:49,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:19:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:19:49,236 INFO L87 Difference]: Start difference. First operand 1760 states and 2960 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 12:19:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:49,630 INFO L93 Difference]: Finished difference Result 5157 states and 8709 transitions. [2022-01-10 12:19:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:19:49,631 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 70 [2022-01-10 12:19:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:49,659 INFO L225 Difference]: With dead ends: 5157 [2022-01-10 12:19:49,660 INFO L226 Difference]: Without dead ends: 3434 [2022-01-10 12:19:49,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:19:49,663 INFO L933 BasicCegarLoop]: 3381 mSDtfsCounter, 5154 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 5073 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:49,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 5073 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:19:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-01-10 12:19:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 1760. [2022-01-10 12:19:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1754 states have (on average 1.686431014823261) internal successors, (2958), 1759 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2958 transitions. [2022-01-10 12:19:49,831 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2958 transitions. Word has length 70 [2022-01-10 12:19:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:49,831 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2958 transitions. [2022-01-10 12:19:49,831 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 12:19:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2958 transitions. [2022-01-10 12:19:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:19:49,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:49,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:49,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:19:49,834 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:49,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1619827498, now seen corresponding path program 1 times [2022-01-10 12:19:49,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:49,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722613700] [2022-01-10 12:19:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:49,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:49,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:49,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722613700] [2022-01-10 12:19:49,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722613700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:50,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:50,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:50,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057366119] [2022-01-10 12:19:50,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:50,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:19:50,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:19:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:19:50,004 INFO L87 Difference]: Start difference. First operand 1760 states and 2958 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:52,047 INFO L93 Difference]: Finished difference Result 9114 states and 14787 transitions. [2022-01-10 12:19:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:19:52,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:19:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:52,068 INFO L225 Difference]: With dead ends: 9114 [2022-01-10 12:19:52,068 INFO L226 Difference]: Without dead ends: 8086 [2022-01-10 12:19:52,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:19:52,074 INFO L933 BasicCegarLoop]: 2610 mSDtfsCounter, 14200 mSDsluCounter, 15108 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14200 SdHoareTripleChecker+Valid, 17718 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:52,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14200 Valid, 17718 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:19:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-01-10 12:19:52,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 3353. [2022-01-10 12:19:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3347 states have (on average 1.6922617269196296) internal successors, (5664), 3352 states have internal predecessors, (5664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5664 transitions. [2022-01-10 12:19:52,465 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5664 transitions. Word has length 71 [2022-01-10 12:19:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:52,466 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 5664 transitions. [2022-01-10 12:19:52,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5664 transitions. [2022-01-10 12:19:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:19:52,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:52,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:52,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:19:52,471 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash 505392792, now seen corresponding path program 1 times [2022-01-10 12:19:52,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:52,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414367919] [2022-01-10 12:19:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:52,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:52,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:52,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414367919] [2022-01-10 12:19:52,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414367919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:52,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:52,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:52,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932469034] [2022-01-10 12:19:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:52,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:19:52,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:19:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:19:52,616 INFO L87 Difference]: Start difference. First operand 3353 states and 5664 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:55,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:55,156 INFO L93 Difference]: Finished difference Result 15588 states and 25441 transitions. [2022-01-10 12:19:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:19:55,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:19:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:55,192 INFO L225 Difference]: With dead ends: 15588 [2022-01-10 12:19:55,192 INFO L226 Difference]: Without dead ends: 13649 [2022-01-10 12:19:55,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:19:55,200 INFO L933 BasicCegarLoop]: 2474 mSDtfsCounter, 14186 mSDsluCounter, 14403 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14186 SdHoareTripleChecker+Valid, 16877 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:55,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14186 Valid, 16877 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:19:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13649 states. [2022-01-10 12:19:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13649 to 6555. [2022-01-10 12:19:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6555 states, 6549 states have (on average 1.6950679493052374) internal successors, (11101), 6554 states have internal predecessors, (11101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6555 states to 6555 states and 11101 transitions. [2022-01-10 12:19:55,978 INFO L78 Accepts]: Start accepts. Automaton has 6555 states and 11101 transitions. Word has length 72 [2022-01-10 12:19:55,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:55,980 INFO L470 AbstractCegarLoop]: Abstraction has 6555 states and 11101 transitions. [2022-01-10 12:19:55,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6555 states and 11101 transitions. [2022-01-10 12:19:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:19:55,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:55,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:55,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:19:55,987 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 96568567, now seen corresponding path program 1 times [2022-01-10 12:19:55,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:55,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645920792] [2022-01-10 12:19:55,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:55,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:56,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645920792] [2022-01-10 12:19:56,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645920792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:56,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:56,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:19:56,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279929282] [2022-01-10 12:19:56,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:56,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:19:56,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:19:56,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:19:56,151 INFO L87 Difference]: Start difference. First operand 6555 states and 11101 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:19:58,234 INFO L93 Difference]: Finished difference Result 22870 states and 38354 transitions. [2022-01-10 12:19:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:19:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:19:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:19:58,295 INFO L225 Difference]: With dead ends: 22870 [2022-01-10 12:19:58,296 INFO L226 Difference]: Without dead ends: 20880 [2022-01-10 12:19:58,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:19:58,307 INFO L933 BasicCegarLoop]: 3907 mSDtfsCounter, 10427 mSDsluCounter, 12093 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10427 SdHoareTripleChecker+Valid, 16000 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:19:58,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10427 Valid, 16000 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:19:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20880 states. [2022-01-10 12:19:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20880 to 7380. [2022-01-10 12:19:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7380 states, 7374 states have (on average 1.6902630865202062) internal successors, (12464), 7379 states have internal predecessors, (12464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7380 states to 7380 states and 12464 transitions. [2022-01-10 12:19:59,002 INFO L78 Accepts]: Start accepts. Automaton has 7380 states and 12464 transitions. Word has length 72 [2022-01-10 12:19:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:19:59,003 INFO L470 AbstractCegarLoop]: Abstraction has 7380 states and 12464 transitions. [2022-01-10 12:19:59,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:19:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7380 states and 12464 transitions. [2022-01-10 12:19:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:19:59,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:19:59,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:19:59,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:19:59,010 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:19:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:19:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1753017209, now seen corresponding path program 1 times [2022-01-10 12:19:59,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:19:59,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646133714] [2022-01-10 12:19:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:19:59,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:19:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:19:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:19:59,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:19:59,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646133714] [2022-01-10 12:19:59,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646133714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:19:59,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:19:59,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:19:59,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327193213] [2022-01-10 12:19:59,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:19:59,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:19:59,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:19:59,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:19:59,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:19:59,163 INFO L87 Difference]: Start difference. First operand 7380 states and 12464 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:02,121 INFO L93 Difference]: Finished difference Result 25883 states and 42622 transitions. [2022-01-10 12:20:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:20:02,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:20:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:02,171 INFO L225 Difference]: With dead ends: 25883 [2022-01-10 12:20:02,172 INFO L226 Difference]: Without dead ends: 21657 [2022-01-10 12:20:02,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:20:02,186 INFO L933 BasicCegarLoop]: 3767 mSDtfsCounter, 9770 mSDsluCounter, 13925 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9770 SdHoareTripleChecker+Valid, 17692 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:02,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9770 Valid, 17692 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:20:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21657 states. [2022-01-10 12:20:03,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21657 to 8766. [2022-01-10 12:20:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8766 states, 8760 states have (on average 1.6801369863013698) internal successors, (14718), 8765 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8766 states to 8766 states and 14718 transitions. [2022-01-10 12:20:03,107 INFO L78 Accepts]: Start accepts. Automaton has 8766 states and 14718 transitions. Word has length 72 [2022-01-10 12:20:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:03,108 INFO L470 AbstractCegarLoop]: Abstraction has 8766 states and 14718 transitions. [2022-01-10 12:20:03,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8766 states and 14718 transitions. [2022-01-10 12:20:03,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:20:03,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:03,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:03,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:20:03,114 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:03,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:03,115 INFO L85 PathProgramCache]: Analyzing trace with hash 840348239, now seen corresponding path program 1 times [2022-01-10 12:20:03,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:03,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371512729] [2022-01-10 12:20:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:03,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:03,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:03,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371512729] [2022-01-10 12:20:03,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371512729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:03,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:03,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:03,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120876297] [2022-01-10 12:20:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:03,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:20:03,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:20:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:20:03,191 INFO L87 Difference]: Start difference. First operand 8766 states and 14718 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:04,303 INFO L93 Difference]: Finished difference Result 11716 states and 19517 transitions. [2022-01-10 12:20:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:20:04,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:20:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:04,331 INFO L225 Difference]: With dead ends: 11716 [2022-01-10 12:20:04,332 INFO L226 Difference]: Without dead ends: 10312 [2022-01-10 12:20:04,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:04,340 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 3283 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:04,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3283 Valid, 3710 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10312 states. [2022-01-10 12:20:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10312 to 8766. [2022-01-10 12:20:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8766 states, 8760 states have (on average 1.6799086757990866) internal successors, (14716), 8765 states have internal predecessors, (14716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8766 states to 8766 states and 14716 transitions. [2022-01-10 12:20:05,336 INFO L78 Accepts]: Start accepts. Automaton has 8766 states and 14716 transitions. Word has length 72 [2022-01-10 12:20:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:05,337 INFO L470 AbstractCegarLoop]: Abstraction has 8766 states and 14716 transitions. [2022-01-10 12:20:05,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 8766 states and 14716 transitions. [2022-01-10 12:20:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:20:05,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:05,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:05,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:20:05,344 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1343328688, now seen corresponding path program 1 times [2022-01-10 12:20:05,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:05,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017219358] [2022-01-10 12:20:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:05,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:05,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:05,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017219358] [2022-01-10 12:20:05,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017219358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:05,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:05,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:05,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023345976] [2022-01-10 12:20:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:05,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:05,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:05,464 INFO L87 Difference]: Start difference. First operand 8766 states and 14716 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:07,828 INFO L93 Difference]: Finished difference Result 23237 states and 38483 transitions. [2022-01-10 12:20:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:20:07,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:20:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:07,866 INFO L225 Difference]: With dead ends: 23237 [2022-01-10 12:20:07,866 INFO L226 Difference]: Without dead ends: 17857 [2022-01-10 12:20:07,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:20:07,881 INFO L933 BasicCegarLoop]: 4611 mSDtfsCounter, 4409 mSDsluCounter, 8349 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 12960 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:07,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 12960 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:20:07,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17857 states. [2022-01-10 12:20:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17857 to 9974. [2022-01-10 12:20:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9974 states, 9968 states have (on average 1.66392455858748) internal successors, (16586), 9973 states have internal predecessors, (16586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9974 states to 9974 states and 16586 transitions. [2022-01-10 12:20:08,952 INFO L78 Accepts]: Start accepts. Automaton has 9974 states and 16586 transitions. Word has length 72 [2022-01-10 12:20:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:08,952 INFO L470 AbstractCegarLoop]: Abstraction has 9974 states and 16586 transitions. [2022-01-10 12:20:08,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 9974 states and 16586 transitions. [2022-01-10 12:20:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:20:08,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:08,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:08,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:20:08,959 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1540566715, now seen corresponding path program 1 times [2022-01-10 12:20:08,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:08,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897490828] [2022-01-10 12:20:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:08,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:09,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:09,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897490828] [2022-01-10 12:20:09,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897490828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:09,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:09,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:20:09,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652316478] [2022-01-10 12:20:09,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:09,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:20:09,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:20:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:20:09,083 INFO L87 Difference]: Start difference. First operand 9974 states and 16586 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:14,960 INFO L93 Difference]: Finished difference Result 61980 states and 102686 transitions. [2022-01-10 12:20:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:20:14,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:20:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:15,076 INFO L225 Difference]: With dead ends: 61980 [2022-01-10 12:20:15,076 INFO L226 Difference]: Without dead ends: 55990 [2022-01-10 12:20:15,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:20:15,104 INFO L933 BasicCegarLoop]: 2984 mSDtfsCounter, 10652 mSDsluCounter, 8365 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10652 SdHoareTripleChecker+Valid, 11349 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:15,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10652 Valid, 11349 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:20:15,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55990 states. [2022-01-10 12:20:17,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55990 to 19880. [2022-01-10 12:20:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19880 states, 19874 states have (on average 1.6636811915064909) internal successors, (33064), 19879 states have internal predecessors, (33064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19880 states to 19880 states and 33064 transitions. [2022-01-10 12:20:17,303 INFO L78 Accepts]: Start accepts. Automaton has 19880 states and 33064 transitions. Word has length 73 [2022-01-10 12:20:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:17,303 INFO L470 AbstractCegarLoop]: Abstraction has 19880 states and 33064 transitions. [2022-01-10 12:20:17,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 19880 states and 33064 transitions. [2022-01-10 12:20:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:20:17,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:17,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:17,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:20:17,314 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:17,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1546783343, now seen corresponding path program 1 times [2022-01-10 12:20:17,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:17,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901219147] [2022-01-10 12:20:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:17,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:17,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901219147] [2022-01-10 12:20:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901219147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:17,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:17,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:17,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322542701] [2022-01-10 12:20:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:17,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:17,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:17,418 INFO L87 Difference]: Start difference. First operand 19880 states and 33064 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:23,413 INFO L93 Difference]: Finished difference Result 60734 states and 99522 transitions. [2022-01-10 12:20:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:20:23,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:20:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:23,511 INFO L225 Difference]: With dead ends: 60734 [2022-01-10 12:20:23,511 INFO L226 Difference]: Without dead ends: 47732 [2022-01-10 12:20:23,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:23,542 INFO L933 BasicCegarLoop]: 1691 mSDtfsCounter, 6114 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6114 SdHoareTripleChecker+Valid, 5927 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:23,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6114 Valid, 5927 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:20:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47732 states. [2022-01-10 12:20:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47732 to 20186. [2022-01-10 12:20:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20186 states, 20180 states have (on average 1.658870168483647) internal successors, (33476), 20185 states have internal predecessors, (33476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20186 states to 20186 states and 33476 transitions. [2022-01-10 12:20:25,863 INFO L78 Accepts]: Start accepts. Automaton has 20186 states and 33476 transitions. Word has length 73 [2022-01-10 12:20:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:25,863 INFO L470 AbstractCegarLoop]: Abstraction has 20186 states and 33476 transitions. [2022-01-10 12:20:25,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 20186 states and 33476 transitions. [2022-01-10 12:20:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:20:25,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:25,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:25,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:20:25,875 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:25,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1774192846, now seen corresponding path program 1 times [2022-01-10 12:20:25,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:25,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076606666] [2022-01-10 12:20:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:25,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:26,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076606666] [2022-01-10 12:20:26,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076606666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:26,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:26,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:26,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102807963] [2022-01-10 12:20:26,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:26,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:20:26,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:26,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:20:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:26,012 INFO L87 Difference]: Start difference. First operand 20186 states and 33476 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:34,442 INFO L93 Difference]: Finished difference Result 67692 states and 111129 transitions. [2022-01-10 12:20:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:20:34,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 12:20:34,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:34,546 INFO L225 Difference]: With dead ends: 67692 [2022-01-10 12:20:34,546 INFO L226 Difference]: Without dead ends: 57326 [2022-01-10 12:20:34,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:20:34,568 INFO L933 BasicCegarLoop]: 3382 mSDtfsCounter, 15753 mSDsluCounter, 10771 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15753 SdHoareTripleChecker+Valid, 14153 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:34,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15753 Valid, 14153 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:20:34,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57326 states. [2022-01-10 12:20:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57326 to 20254. [2022-01-10 12:20:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20254 states, 20248 states have (on average 1.6600158040300277) internal successors, (33612), 20253 states have internal predecessors, (33612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20254 states to 20254 states and 33612 transitions. [2022-01-10 12:20:37,105 INFO L78 Accepts]: Start accepts. Automaton has 20254 states and 33612 transitions. Word has length 74 [2022-01-10 12:20:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:37,105 INFO L470 AbstractCegarLoop]: Abstraction has 20254 states and 33612 transitions. [2022-01-10 12:20:37,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 20254 states and 33612 transitions. [2022-01-10 12:20:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:20:37,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:37,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:37,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:20:37,115 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 12:20:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1577679341, now seen corresponding path program 1 times [2022-01-10 12:20:37,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:37,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662171267] [2022-01-10 12:20:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:37,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:37,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:37,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662171267] [2022-01-10 12:20:37,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662171267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:37,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:37,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:20:37,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188143849] [2022-01-10 12:20:37,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:37,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:37,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:37,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:37,230 INFO L87 Difference]: Start difference. First operand 20254 states and 33612 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)