/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:54:32,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:54:32,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:54:32,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 15:54:32,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:54:32,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:54:32,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:54:32,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:54:32,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:54:32,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:54:32,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:54:32,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:54:32,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:54:32,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:54:32,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:54:32,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:54:32,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 15:54:32,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 15:54:32,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 15:54:32,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 15:54:32,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 15:54:32,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 15:54:32,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:54:32,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:54:32,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:54:32,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:54:32,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:54:32,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:54:32,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:54:32,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:54:32,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:54:32,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:54:32,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:54:32,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:54:32,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:54:32,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:54:32,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:54:32,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:54:32,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:54:32,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:54:32,406 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:54:32,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:54:32,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:54:32,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:54:32,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:54:32,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:54:32,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:54:32,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:54:32,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:54:32,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:54:32,409 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:54:32,409 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:54:32,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:54:32,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:54:32,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:54:32,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:54:32,609 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:54:32,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c [2022-01-10 15:54:32,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b725f341d/c94d3ae2b57c48ad85aa106139ab81a6/FLAG2e33c0203 [2022-01-10 15:54:33,254 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:54:33,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c [2022-01-10 15:54:33,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b725f341d/c94d3ae2b57c48ad85aa106139ab81a6/FLAG2e33c0203 [2022-01-10 15:54:33,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b725f341d/c94d3ae2b57c48ad85aa106139ab81a6 [2022-01-10 15:54:33,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:54:33,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:54:33,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:54:33,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:54:33,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:54:33,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:54:33" (1/1) ... [2022-01-10 15:54:33,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ba254f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:33, skipping insertion in model container [2022-01-10 15:54:33,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:54:33" (1/1) ... [2022-01-10 15:54:33,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:54:33,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:54:34,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c[72493,72506] [2022-01-10 15:54:34,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:54:34,078 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 15:54:34,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:54:34,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c[72493,72506] [2022-01-10 15:54:34,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:54:34,189 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:54:34,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.03.i.cil.c[72493,72506] [2022-01-10 15:54:34,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:54:34,255 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:54:34,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34 WrapperNode [2022-01-10 15:54:34,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:54:34,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:54:34,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:54:34,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:54:34,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,313 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 775 [2022-01-10 15:54:34,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:54:34,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:54:34,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:54:34,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:54:34,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:54:34,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:54:34,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:54:34,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:54:34,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (1/1) ... [2022-01-10 15:54:34,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:54:34,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:54:34,421 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 15:54:34,451 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 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 15:54:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:54:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:54:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 15:54:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 15:54:34,626 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:54:34,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:54:34,638 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 15:54:47,252 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 15:54:47,253 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 15:54:47,253 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:54:47,257 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:54:47,257 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 15:54:47,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:54:47 BoogieIcfgContainer [2022-01-10 15:54:47,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:54:47,261 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:54:47,262 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:54:47,263 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:54:47,265 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:54:47" (1/1) ... [2022-01-10 15:54:47,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:54:47 BasicIcfg [2022-01-10 15:54:47,434 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:54:47,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:54:47,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:54:47,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:54:47,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:54:33" (1/4) ... [2022-01-10 15:54:47,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f04006b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:54:47, skipping insertion in model container [2022-01-10 15:54:47,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:54:34" (2/4) ... [2022-01-10 15:54:47,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f04006b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:54:47, skipping insertion in model container [2022-01-10 15:54:47,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:54:47" (3/4) ... [2022-01-10 15:54:47,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f04006b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:54:47, skipping insertion in model container [2022-01-10 15:54:47,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:54:47" (4/4) ... [2022-01-10 15:54:47,439 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.cTransformedIcfg [2022-01-10 15:54:47,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:54:47,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:54:47,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:54:47,473 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 15:54:47,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:54:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 0 states have call successors, (0), 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 15:54:47,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 15:54:47,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:54:47,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:54:47,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:54:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:54:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1060706955, now seen corresponding path program 1 times [2022-01-10 15:54:47,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:54:47,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341835549] [2022-01-10 15:54:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:54:47,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:54:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:54:48,375 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 15:54:48,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:54:48,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341835549] [2022-01-10 15:54:48,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341835549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:54:48,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:54:48,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 15:54:48,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761600593] [2022-01-10 15:54:48,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:54:48,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:54:48,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:54:48,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:54:48,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:54:48,399 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:54:50,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:54:52,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:54:56,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:54:58,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:00,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:03,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:09,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:14,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:19,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:55:19,811 INFO L93 Difference]: Finished difference Result 384 states and 649 transitions. [2022-01-10 15:55:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:55:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-01-10 15:55:19,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:55:19,833 INFO L225 Difference]: With dead ends: 384 [2022-01-10 15:55:19,833 INFO L226 Difference]: Without dead ends: 226 [2022-01-10 15:55:19,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:55:19,853 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 107 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 11 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-01-10 15:55:19,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 441 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 252 Invalid, 8 Unknown, 0 Unchecked, 31.3s Time] [2022-01-10 15:55:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-01-10 15:55:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 167. [2022-01-10 15:55:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.608433734939759) internal successors, (267), 166 states have internal predecessors, (267), 0 states have call successors, (0), 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 15:55:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 267 transitions. [2022-01-10 15:55:19,901 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 267 transitions. Word has length 47 [2022-01-10 15:55:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:55:19,901 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 267 transitions. [2022-01-10 15:55:19,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:55:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 267 transitions. [2022-01-10 15:55:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 15:55:19,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:55:19,903 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] [2022-01-10 15:55:19,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:55:19,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:55:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:55:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1478771925, now seen corresponding path program 1 times [2022-01-10 15:55:19,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:55:19,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33348313] [2022-01-10 15:55:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:55:19,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:55:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:55:20,314 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 15:55:20,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:55:20,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33348313] [2022-01-10 15:55:20,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33348313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:55:20,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:55:20,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:55:20,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494062819] [2022-01-10 15:55:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:55:20,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:55:20,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:55:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:55:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:55:20,340 INFO L87 Difference]: Start difference. First operand 167 states and 267 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 15:55:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:55:20,450 INFO L93 Difference]: Finished difference Result 408 states and 637 transitions. [2022-01-10 15:55:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:55:20,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 15:55:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:55:20,452 INFO L225 Difference]: With dead ends: 408 [2022-01-10 15:55:20,452 INFO L226 Difference]: Without dead ends: 286 [2022-01-10 15:55:20,453 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 15:55:20,453 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 145 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:55:20,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 375 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:55:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-10 15:55:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-01-10 15:55:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.5649122807017544) internal successors, (446), 285 states have internal predecessors, (446), 0 states have call successors, (0), 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 15:55:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 446 transitions. [2022-01-10 15:55:20,480 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 446 transitions. Word has length 48 [2022-01-10 15:55:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:55:20,480 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 446 transitions. [2022-01-10 15:55:20,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 15:55:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 446 transitions. [2022-01-10 15:55:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 15:55:20,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:55:20,483 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:55:20,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 15:55:20,499 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:55:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:55:20,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1569271928, now seen corresponding path program 1 times [2022-01-10 15:55:20,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:55:20,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247255437] [2022-01-10 15:55:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:55:20,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:55:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:55:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:55:20,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:55:20,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247255437] [2022-01-10 15:55:20,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247255437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:55:20,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:55:20,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 15:55:20,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594065163] [2022-01-10 15:55:20,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:55:20,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:55:20,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:55:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:55:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:55:20,931 INFO L87 Difference]: Start difference. First operand 286 states and 446 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:55:22,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:25,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:27,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:29,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:31,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:38,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:40,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:42,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:44,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:55:52,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []