/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 02:09:45,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 02:09:45,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 02:09:45,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 02:09:45,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 02:09:45,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 02:09:45,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 02:09:45,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 02:09:45,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 02:09:45,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 02:09:45,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 02:09:45,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 02:09:45,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 02:09:45,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 02:09:45,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 02:09:45,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 02:09:45,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 02:09:45,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 02:09:45,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 02:09:45,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 02:09:45,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 02:09:45,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 02:09:45,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 02:09:45,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 02:09:45,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 02:09:45,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 02:09:45,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 02:09:45,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 02:09:45,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 02:09:45,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-31 02:09:45,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 02:09:45,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 02:09:45,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 02:09:45,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 02:09:45,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 02:09:45,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 02:09:45,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 02:09:45,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 02:09:45,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 02:09:45,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 02:09:45,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 02:09:45,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 02:09:45,315 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 02:09:45,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 02:09:45,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 02:09:45,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 02:09:45,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 02:09:45,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 02:09:45,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 02:09:45,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 02:09:45,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 02:09:45,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:09:45,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 02:09:45,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 02:09:45,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 02:09:45,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 02:09:45,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 02:09:45,321 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 02:09:45,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 02:09:45,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 02:09:45,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 02:09:45,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 02:09:45,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 02:09:45,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 02:09:45,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 02:09:45,523 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 02:09:45,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-01-31 02:09:45,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c78027ac/6671b53a67d147dbb0cb8550bd49fa84/FLAGa87ccdec9 [2022-01-31 02:09:45,906 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 02:09:45,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-01-31 02:09:45,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c78027ac/6671b53a67d147dbb0cb8550bd49fa84/FLAGa87ccdec9 [2022-01-31 02:09:46,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c78027ac/6671b53a67d147dbb0cb8550bd49fa84 [2022-01-31 02:09:46,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 02:09:46,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 02:09:46,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 02:09:46,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 02:09:46,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 02:09:46,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d90bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46, skipping insertion in model container [2022-01-31 02:09:46,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 02:09:46,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 02:09:46,486 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2022-01-31 02:09:46,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:09:46,512 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 02:09:46,520 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2022-01-31 02:09:46,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:09:46,539 INFO L208 MainTranslator]: Completed translation [2022-01-31 02:09:46,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46 WrapperNode [2022-01-31 02:09:46,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 02:09:46,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 02:09:46,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 02:09:46,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 02:09:46,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 02:09:46,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 02:09:46,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 02:09:46,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 02:09:46,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (1/1) ... [2022-01-31 02:09:46,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:09:46,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:09:46,598 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) [2022-01-31 02:09:46,624 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 [2022-01-31 02:09:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 02:09:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 02:09:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 02:09:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 02:09:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2022-01-31 02:09:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2022-01-31 02:09:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 02:09:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2022-01-31 02:09:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 02:09:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 02:09:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 02:09:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 02:09:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 02:09:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 02:09:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 02:09:46,737 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 02:09:46,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 02:09:46,915 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 02:09:46,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 02:09:46,920 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 02:09:46,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:09:46 BoogieIcfgContainer [2022-01-31 02:09:46,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 02:09:46,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 02:09:46,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 02:09:46,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 02:09:46,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:09:46" (1/3) ... [2022-01-31 02:09:46,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7c3266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:09:46, skipping insertion in model container [2022-01-31 02:09:46,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:09:46" (2/3) ... [2022-01-31 02:09:46,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7c3266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:09:46, skipping insertion in model container [2022-01-31 02:09:46,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:09:46" (3/3) ... [2022-01-31 02:09:46,930 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-01-31 02:09:46,934 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 02:09:46,934 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 02:09:46,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 02:09:46,985 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 [2022-01-31 02:09:46,985 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 02:09:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 02:09:47,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 02:09:47,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:47,008 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] [2022-01-31 02:09:47,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1687048304, now seen corresponding path program 1 times [2022-01-31 02:09:47,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:47,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942817925] [2022-01-31 02:09:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:47,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 02:09:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:47,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:47,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942817925] [2022-01-31 02:09:47,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942817925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:09:47,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:09:47,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 02:09:47,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54388534] [2022-01-31 02:09:47,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:09:47,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 02:09:47,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 02:09:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 02:09:47,239 INFO L87 Difference]: Start difference. First operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:47,289 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2022-01-31 02:09:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 02:09:47,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-01-31 02:09:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:47,302 INFO L225 Difference]: With dead ends: 93 [2022-01-31 02:09:47,302 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 02:09:47,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 02:09:47,308 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:47,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 62 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 02:09:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 02:09:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-31 02:09:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 02:09:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2022-01-31 02:09:47,333 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2022-01-31 02:09:47,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:47,334 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2022-01-31 02:09:47,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2022-01-31 02:09:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 02:09:47,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:47,335 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] [2022-01-31 02:09:47,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 02:09:47,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:47,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:47,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1509330471, now seen corresponding path program 1 times [2022-01-31 02:09:47,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:47,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424577508] [2022-01-31 02:09:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:47,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:09:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:47,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:47,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424577508] [2022-01-31 02:09:47,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424577508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:09:47,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:09:47,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 02:09:47,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211403886] [2022-01-31 02:09:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:09:47,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 02:09:47,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 02:09:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 02:09:47,397 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:47,503 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-01-31 02:09:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 02:09:47,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-01-31 02:09:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:47,506 INFO L225 Difference]: With dead ends: 78 [2022-01-31 02:09:47,506 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 02:09:47,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 02:09:47,512 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:47,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 56 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:09:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 02:09:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-31 02:09:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 02:09:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-01-31 02:09:47,530 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2022-01-31 02:09:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:47,531 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-01-31 02:09:47,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-01-31 02:09:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 02:09:47,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:47,534 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] [2022-01-31 02:09:47,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 02:09:47,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1932032297, now seen corresponding path program 1 times [2022-01-31 02:09:47,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:47,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292622879] [2022-01-31 02:09:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:47,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:09:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:47,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292622879] [2022-01-31 02:09:47,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292622879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:09:47,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:09:47,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 02:09:47,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314674550] [2022-01-31 02:09:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:09:47,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 02:09:47,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 02:09:47,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 02:09:47,652 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:47,810 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-01-31 02:09:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 02:09:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-01-31 02:09:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:47,812 INFO L225 Difference]: With dead ends: 106 [2022-01-31 02:09:47,812 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 02:09:47,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-31 02:09:47,819 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 118 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:47,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 56 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:09:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 02:09:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2022-01-31 02:09:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 02:09:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2022-01-31 02:09:47,840 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 33 [2022-01-31 02:09:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:47,840 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2022-01-31 02:09:47,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2022-01-31 02:09:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 02:09:47,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:47,842 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] [2022-01-31 02:09:47,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 02:09:47,842 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1403704983, now seen corresponding path program 1 times [2022-01-31 02:09:47,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:47,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564559342] [2022-01-31 02:09:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:47,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:09:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:47,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:47,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564559342] [2022-01-31 02:09:47,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564559342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:09:47,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:09:47,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 02:09:47,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915848556] [2022-01-31 02:09:47,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:09:47,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 02:09:47,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:47,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 02:09:47,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-31 02:09:47,986 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:48,226 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-01-31 02:09:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 02:09:48,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-01-31 02:09:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:48,234 INFO L225 Difference]: With dead ends: 106 [2022-01-31 02:09:48,234 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 02:09:48,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-31 02:09:48,235 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 187 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:48,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 68 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:09:48,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 02:09:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2022-01-31 02:09:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 73 states have internal predecessors, (95), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 02:09:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-01-31 02:09:48,243 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 33 [2022-01-31 02:09:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:48,243 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-01-31 02:09:48,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-01-31 02:09:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 02:09:48,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:48,244 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] [2022-01-31 02:09:48,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 02:09:48,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash 590439723, now seen corresponding path program 1 times [2022-01-31 02:09:48,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:48,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861032221] [2022-01-31 02:09:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:48,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:09:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:48,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:48,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861032221] [2022-01-31 02:09:48,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861032221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:09:48,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:09:48,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 02:09:48,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383437203] [2022-01-31 02:09:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:09:48,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 02:09:48,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 02:09:48,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-31 02:09:48,331 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:48,586 INFO L93 Difference]: Finished difference Result 195 states and 257 transitions. [2022-01-31 02:09:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 02:09:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-01-31 02:09:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:48,588 INFO L225 Difference]: With dead ends: 195 [2022-01-31 02:09:48,588 INFO L226 Difference]: Without dead ends: 127 [2022-01-31 02:09:48,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-31 02:09:48,590 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 140 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:48,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 77 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:09:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-31 02:09:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2022-01-31 02:09:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 02:09:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2022-01-31 02:09:48,614 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 33 [2022-01-31 02:09:48,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:48,614 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2022-01-31 02:09:48,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:48,615 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2022-01-31 02:09:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 02:09:48,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:48,616 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] [2022-01-31 02:09:48,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 02:09:48,616 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash -532744798, now seen corresponding path program 1 times [2022-01-31 02:09:48,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:48,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859225029] [2022-01-31 02:09:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:48,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 02:09:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:48,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859225029] [2022-01-31 02:09:48,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859225029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:09:48,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:09:48,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 02:09:48,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983718473] [2022-01-31 02:09:48,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:09:48,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 02:09:48,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 02:09:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-31 02:09:48,699 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:48,858 INFO L93 Difference]: Finished difference Result 180 states and 227 transitions. [2022-01-31 02:09:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 02:09:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-01-31 02:09:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:48,859 INFO L225 Difference]: With dead ends: 180 [2022-01-31 02:09:48,859 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 02:09:48,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-31 02:09:48,863 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 125 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:48,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 62 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:09:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 02:09:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2022-01-31 02:09:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 75 states have internal predecessors, (92), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 02:09:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2022-01-31 02:09:48,878 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 35 [2022-01-31 02:09:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:48,879 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2022-01-31 02:09:48,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:48,879 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2022-01-31 02:09:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 02:09:48,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:48,884 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:09:48,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 02:09:48,885 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1949287377, now seen corresponding path program 1 times [2022-01-31 02:09:48,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:48,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934392218] [2022-01-31 02:09:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:48,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 02:09:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 02:09:48,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:48,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934392218] [2022-01-31 02:09:48,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934392218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:09:48,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:09:48,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 02:09:48,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414474879] [2022-01-31 02:09:48,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:09:48,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 02:09:48,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 02:09:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-31 02:09:48,978 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:49,221 INFO L93 Difference]: Finished difference Result 163 states and 204 transitions. [2022-01-31 02:09:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 02:09:49,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-01-31 02:09:49,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:49,226 INFO L225 Difference]: With dead ends: 163 [2022-01-31 02:09:49,226 INFO L226 Difference]: Without dead ends: 119 [2022-01-31 02:09:49,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-01-31 02:09:49,227 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 195 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:49,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 86 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:09:49,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-31 02:09:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2022-01-31 02:09:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 87 states have internal predecessors, (109), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 02:09:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2022-01-31 02:09:49,234 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 38 [2022-01-31 02:09:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:49,234 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2022-01-31 02:09:49,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:09:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2022-01-31 02:09:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 02:09:49,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:49,235 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:09:49,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 02:09:49,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1669063770, now seen corresponding path program 1 times [2022-01-31 02:09:49,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:49,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76310409] [2022-01-31 02:09:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:49,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 02:09:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:49,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:49,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76310409] [2022-01-31 02:09:49,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76310409] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:09:49,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541026278] [2022-01-31 02:09:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:49,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:09:49,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:09:49,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 02:09:49,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 02:09:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:49,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 02:09:49,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:09:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:49,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:09:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:49,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541026278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:09:49,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:09:49,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-01-31 02:09:49,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934866931] [2022-01-31 02:09:49,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:09:49,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 02:09:49,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 02:09:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 02:09:49,560 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 02:09:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:49,746 INFO L93 Difference]: Finished difference Result 243 states and 304 transitions. [2022-01-31 02:09:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 02:09:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-01-31 02:09:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:49,748 INFO L225 Difference]: With dead ends: 243 [2022-01-31 02:09:49,748 INFO L226 Difference]: Without dead ends: 173 [2022-01-31 02:09:49,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-31 02:09:49,749 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 200 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:49,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 57 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:09:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-01-31 02:09:49,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 135. [2022-01-31 02:09:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 122 states have internal predecessors, (149), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 02:09:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 165 transitions. [2022-01-31 02:09:49,758 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 165 transitions. Word has length 40 [2022-01-31 02:09:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:49,759 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 165 transitions. [2022-01-31 02:09:49,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 02:09:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 165 transitions. [2022-01-31 02:09:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 02:09:49,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:49,760 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-31 02:09:49,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 02:09:49,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:09:49,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1571153886, now seen corresponding path program 2 times [2022-01-31 02:09:49,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:49,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898633750] [2022-01-31 02:09:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:49,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:09:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:09:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:09:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:50,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:09:50,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898633750] [2022-01-31 02:09:50,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898633750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:09:50,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090782390] [2022-01-31 02:09:50,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:09:50,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:09:50,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:09:50,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 02:09:50,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 02:09:50,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:09:50,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:09:50,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 02:09:50,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:09:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:50,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:09:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:09:50,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090782390] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:09:50,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:09:50,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-31 02:09:50,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326798165] [2022-01-31 02:09:50,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:09:50,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 02:09:50,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:09:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 02:09:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2022-01-31 02:09:50,573 INFO L87 Difference]: Start difference. First operand 135 states and 165 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 22 states have internal predecessors, (101), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 02:09:51,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:09:51,831 INFO L93 Difference]: Finished difference Result 473 states and 623 transitions. [2022-01-31 02:09:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 02:09:51,831 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 22 states have internal predecessors, (101), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2022-01-31 02:09:51,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:09:51,833 INFO L225 Difference]: With dead ends: 473 [2022-01-31 02:09:51,833 INFO L226 Difference]: Without dead ends: 471 [2022-01-31 02:09:51,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=2124, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 02:09:51,835 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 820 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:09:51,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 115 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:09:51,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-01-31 02:09:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 224. [2022-01-31 02:09:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 207 states have (on average 1.2995169082125604) internal successors, (269), 209 states have internal predecessors, (269), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 02:09:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2022-01-31 02:09:51,853 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 45 [2022-01-31 02:09:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:09:51,853 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2022-01-31 02:09:51,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 22 states have internal predecessors, (101), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 02:09:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2022-01-31 02:09:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 02:09:51,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:09:51,854 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-31 02:09:51,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-31 02:09:52,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 02:09:52,055 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:09:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:09:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash -870089308, now seen corresponding path program 1 times [2022-01-31 02:09:52,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:09:52,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891725510] [2022-01-31 02:09:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:09:52,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:09:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 02:09:52,067 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 02:09:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 02:09:52,090 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 02:09:52,090 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 02:09:52,091 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 02:09:52,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-31 02:09:52,094 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:09:52,096 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 02:09:52,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:09:52 BoogieIcfgContainer [2022-01-31 02:09:52,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 02:09:52,139 INFO L158 Benchmark]: Toolchain (without parser) took 5802.91ms. Allocated memory was 223.3MB in the beginning and 302.0MB in the end (delta: 78.6MB). Free memory was 173.1MB in the beginning and 143.0MB in the end (delta: 30.1MB). Peak memory consumption was 109.8MB. Max. memory is 8.0GB. [2022-01-31 02:09:52,139 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 223.3MB. Free memory is still 189.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 02:09:52,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.74ms. Allocated memory is still 223.3MB. Free memory was 173.0MB in the beginning and 198.6MB in the end (delta: -25.6MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-01-31 02:09:52,140 INFO L158 Benchmark]: Boogie Preprocessor took 31.54ms. Allocated memory is still 223.3MB. Free memory was 198.6MB in the beginning and 197.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 02:09:52,140 INFO L158 Benchmark]: RCFGBuilder took 348.72ms. Allocated memory is still 223.3MB. Free memory was 196.5MB in the beginning and 181.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-31 02:09:52,140 INFO L158 Benchmark]: TraceAbstraction took 5216.30ms. Allocated memory was 223.3MB in the beginning and 302.0MB in the end (delta: 78.6MB). Free memory was 180.8MB in the beginning and 143.0MB in the end (delta: 37.8MB). Peak memory consumption was 116.9MB. Max. memory is 8.0GB. [2022-01-31 02:09:52,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 223.3MB. Free memory is still 189.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.74ms. Allocated memory is still 223.3MB. Free memory was 173.0MB in the beginning and 198.6MB in the end (delta: -25.6MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.54ms. Allocated memory is still 223.3MB. Free memory was 198.6MB in the beginning and 197.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 348.72ms. Allocated memory is still 223.3MB. Free memory was 196.5MB in the beginning and 181.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5216.30ms. Allocated memory was 223.3MB in the beginning and 302.0MB in the end (delta: 78.6MB). Free memory was 180.8MB in the beginning and 143.0MB in the end (delta: 37.8MB). Peak memory consumption was 116.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 VAL [A={4:0}] [L87] CALL parse_expression_list (A) VAL [str={4:0}] [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L61] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L63] i++ [L64] str[i] [L65] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=52] [L80] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=52] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=50] [L80] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=50] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=52, str[start]=52] [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=52] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=50, str[j]=50] [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=50, str[j]=50] [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=50] [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L72] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={4:0}] [L41] return strncpy(dest,src,n); [L72] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={54:53}, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L73] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1895 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1876 mSDsluCounter, 639 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 189 mSDsCounter, 516 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3545 IncrementalHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 516 mSolverCounterUnsat, 450 mSDtfsCounter, 3545 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred in iteration=9, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 411 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 449 NumberOfCodeBlocks, 449 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 476 ConstructedInterpolants, 0 QuantifiedInterpolants, 1432 SizeOfPredicates, 4 NumberOfNonLiveVariables, 358 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 2/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-31 02:09:52,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...