/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:17:11,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:17:11,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:17:11,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:17:11,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:17:11,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:17:11,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:17:11,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:17:11,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:17:11,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:17:11,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:17:11,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:17:11,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:17:11,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:17:11,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:17:11,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:17:11,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:17:11,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:17:11,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:17:11,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:17:11,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:17:11,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:17:11,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:17:11,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:17:11,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:17:11,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:17:11,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:17:11,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:17:11,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:17:11,482 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:17:11,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:17:11,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:17:11,488 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:17:11,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:17:11,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:17:11,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:17:11,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:17:11,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:17:11,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:17:11,490 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:17:11,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:17:11,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:17:11,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:17:11,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:17:11,492 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:17:11,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:17:11,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:17:11,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:17:11,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:17:11,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:17:11,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:17:11,493 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:17:11,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:17:11,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:17:11,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:17:11,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:17:11,925 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:17:11,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-02-24 00:17:12,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566b869b4/1e09af776f1b49b284debcd7e7fc4417/FLAG19db8002c [2021-02-24 00:17:12,677 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:17:12,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-02-24 00:17:12,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566b869b4/1e09af776f1b49b284debcd7e7fc4417/FLAG19db8002c [2021-02-24 00:17:13,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566b869b4/1e09af776f1b49b284debcd7e7fc4417 [2021-02-24 00:17:13,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:17:13,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:17:13,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:17:13,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:17:13,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:17:13,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689dc41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13, skipping insertion in model container [2021-02-24 00:17:13,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:17:13,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:17:13,338 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-02-24 00:17:13,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:17:13,390 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:17:13,404 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2021-02-24 00:17:13,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:17:13,460 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:17:13,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13 WrapperNode [2021-02-24 00:17:13,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:17:13,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:17:13,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:17:13,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:17:13,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... [2021-02-24 00:17:13,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:17:13,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:17:13,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:17:13,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:17:13,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:17:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:17:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:17:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:17:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:17:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2021-02-24 00:17:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2021-02-24 00:17:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:17:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:17:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:17:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:17:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:17:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:17:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:17:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-24 00:17:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:17:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-02-24 00:17:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-02-24 00:17:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-02-24 00:17:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-02-24 00:17:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2021-02-24 00:17:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-02-24 00:17:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-02-24 00:17:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-02-24 00:17:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-02-24 00:17:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-02-24 00:17:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-02-24 00:17:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2021-02-24 00:17:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2021-02-24 00:17:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-02-24 00:17:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2021-02-24 00:17:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2021-02-24 00:17:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2021-02-24 00:17:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2021-02-24 00:17:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2021-02-24 00:17:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2021-02-24 00:17:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2021-02-24 00:17:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2021-02-24 00:17:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2021-02-24 00:17:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2021-02-24 00:17:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2021-02-24 00:17:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2021-02-24 00:17:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:17:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:17:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:17:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:17:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:17:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:17:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:17:14,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:17:14,363 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 00:17:14,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:14 BoogieIcfgContainer [2021-02-24 00:17:14,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:17:14,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:17:14,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:17:14,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:17:14,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:17:13" (1/3) ... [2021-02-24 00:17:14,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e932a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:14, skipping insertion in model container [2021-02-24 00:17:14,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:13" (2/3) ... [2021-02-24 00:17:14,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e932a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:14, skipping insertion in model container [2021-02-24 00:17:14,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:14" (3/3) ... [2021-02-24 00:17:14,375 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-02-24 00:17:14,383 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:17:14,388 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:17:14,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:17:14,436 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:17:14,436 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:17:14,436 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:17:14,436 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:17:14,436 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:17:14,436 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:17:14,437 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:17:14,437 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:17:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2021-02-24 00:17:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-24 00:17:14,469 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:14,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:14,471 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash -364003915, now seen corresponding path program 1 times [2021-02-24 00:17:14,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:14,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469274696] [2021-02-24 00:17:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:14,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:14,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:14,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:14,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:14,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:14,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-24 00:17:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:14,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:14,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:14,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469274696] [2021-02-24 00:17:14,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:17:14,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:17:14,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086764953] [2021-02-24 00:17:14,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:17:14,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:14,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:17:14,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:17:14,835 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 3 states. [2021-02-24 00:17:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:15,222 INFO L93 Difference]: Finished difference Result 259 states and 295 transitions. [2021-02-24 00:17:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:17:15,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2021-02-24 00:17:15,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:15,234 INFO L225 Difference]: With dead ends: 259 [2021-02-24 00:17:15,234 INFO L226 Difference]: Without dead ends: 115 [2021-02-24 00:17:15,240 INFO L677 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 [2021-02-24 00:17:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-24 00:17:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-02-24 00:17:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-02-24 00:17:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2021-02-24 00:17:15,302 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 55 [2021-02-24 00:17:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:15,302 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2021-02-24 00:17:15,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:17:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2021-02-24 00:17:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-24 00:17:15,306 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:15,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:15,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:17:15,307 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:15,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1804281577, now seen corresponding path program 1 times [2021-02-24 00:17:15,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:15,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857038731] [2021-02-24 00:17:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:15,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:15,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:15,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-24 00:17:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:15,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:15,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857038731] [2021-02-24 00:17:15,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:17:15,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:17:15,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464562289] [2021-02-24 00:17:15,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:17:15,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:15,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:17:15,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:17:15,484 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 4 states. [2021-02-24 00:17:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:15,751 INFO L93 Difference]: Finished difference Result 216 states and 236 transitions. [2021-02-24 00:17:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:17:15,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2021-02-24 00:17:15,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:15,754 INFO L225 Difference]: With dead ends: 216 [2021-02-24 00:17:15,754 INFO L226 Difference]: Without dead ends: 121 [2021-02-24 00:17:15,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:17:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-24 00:17:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2021-02-24 00:17:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-24 00:17:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-02-24 00:17:15,776 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 67 [2021-02-24 00:17:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:15,777 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-02-24 00:17:15,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:17:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-02-24 00:17:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-24 00:17:15,780 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:15,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:15,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:17:15,780 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1279655060, now seen corresponding path program 1 times [2021-02-24 00:17:15,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:15,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67615946] [2021-02-24 00:17:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:15,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:15,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:15,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:15,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:15,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-24 00:17:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:15,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:15,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:15,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67615946] [2021-02-24 00:17:15,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:15,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:17:15,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149192294] [2021-02-24 00:17:15,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:17:15,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:15,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:17:15,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:17:15,921 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 6 states. [2021-02-24 00:17:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:16,239 INFO L93 Difference]: Finished difference Result 223 states and 243 transitions. [2021-02-24 00:17:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:17:16,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2021-02-24 00:17:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:16,242 INFO L225 Difference]: With dead ends: 223 [2021-02-24 00:17:16,242 INFO L226 Difference]: Without dead ends: 128 [2021-02-24 00:17:16,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:17:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-02-24 00:17:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2021-02-24 00:17:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-24 00:17:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-02-24 00:17:16,257 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 74 [2021-02-24 00:17:16,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:16,257 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-02-24 00:17:16,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:17:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-02-24 00:17:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-02-24 00:17:16,259 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:16,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:16,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:17:16,260 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1005944695, now seen corresponding path program 2 times [2021-02-24 00:17:16,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:16,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464036823] [2021-02-24 00:17:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:16,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:16,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-02-24 00:17:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:16,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-24 00:17:16,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464036823] [2021-02-24 00:17:16,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:17:16,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:17:16,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086203830] [2021-02-24 00:17:16,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:17:16,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:16,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:17:16,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:17:16,430 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand 4 states. [2021-02-24 00:17:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:16,640 INFO L93 Difference]: Finished difference Result 211 states and 231 transitions. [2021-02-24 00:17:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:17:16,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2021-02-24 00:17:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:16,643 INFO L225 Difference]: With dead ends: 211 [2021-02-24 00:17:16,643 INFO L226 Difference]: Without dead ends: 124 [2021-02-24 00:17:16,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:17:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-24 00:17:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-02-24 00:17:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-24 00:17:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-02-24 00:17:16,657 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 81 [2021-02-24 00:17:16,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:16,657 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-02-24 00:17:16,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:17:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-02-24 00:17:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-24 00:17:16,659 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:16,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:16,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:17:16,660 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:16,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:16,660 INFO L82 PathProgramCache]: Analyzing trace with hash 525139788, now seen corresponding path program 1 times [2021-02-24 00:17:16,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:16,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053515119] [2021-02-24 00:17:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:16,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 00:17:16,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:16,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:16,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:16,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-24 00:17:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:16,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:16,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-24 00:17:16,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053515119] [2021-02-24 00:17:16,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:17:16,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:17:16,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895404822] [2021-02-24 00:17:16,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:17:16,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:17:16,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:17:16,840 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 6 states. [2021-02-24 00:17:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:17,167 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2021-02-24 00:17:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:17:17,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-02-24 00:17:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:17,169 INFO L225 Difference]: With dead ends: 124 [2021-02-24 00:17:17,169 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:17:17,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:17:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:17:17,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:17:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:17:17,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:17:17,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2021-02-24 00:17:17,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:17,172 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:17:17,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:17:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:17:17,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:17:17,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:17:17,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:17:17,947 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:17:17,947 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:17:17,947 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:17:17,947 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:17:17,948 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:17:17,948 INFO L192 CegarLoopUtils]: At program point L68-3(line 68) the Hoare annotation is: true [2021-02-24 00:17:17,948 INFO L192 CegarLoopUtils]: At program point L68-4(line 68) the Hoare annotation is: true [2021-02-24 00:17:17,948 INFO L192 CegarLoopUtils]: At program point L68-6(line 68) the Hoare annotation is: true [2021-02-24 00:17:17,948 INFO L192 CegarLoopUtils]: At program point L68-7(line 68) the Hoare annotation is: true [2021-02-24 00:17:17,948 INFO L185 CegarLoopUtils]: At program point L60(line 60) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-24 00:17:17,949 INFO L185 CegarLoopUtils]: At program point L60-1(line 60) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-24 00:17:17,949 INFO L185 CegarLoopUtils]: At program point L60-2(line 60) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-24 00:17:17,950 INFO L185 CegarLoopUtils]: At program point L77(line 77) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2021-02-24 00:17:17,950 INFO L185 CegarLoopUtils]: At program point L77-1(line 77) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2021-02-24 00:17:17,950 INFO L185 CegarLoopUtils]: At program point L61(line 61) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-24 00:17:17,950 INFO L192 CegarLoopUtils]: At program point L61-1(lines 59 86) the Hoare annotation is: true [2021-02-24 00:17:17,950 INFO L192 CegarLoopUtils]: At program point L61-2(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,951 INFO L192 CegarLoopUtils]: At program point L61-3(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,951 INFO L192 CegarLoopUtils]: At program point L61-4(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,951 INFO L192 CegarLoopUtils]: At program point L61-5(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,952 INFO L192 CegarLoopUtils]: At program point L61-6(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,952 INFO L192 CegarLoopUtils]: At program point L61-7(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,952 INFO L192 CegarLoopUtils]: At program point L61-8(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,952 INFO L192 CegarLoopUtils]: At program point L61-9(line 61) the Hoare annotation is: true [2021-02-24 00:17:17,952 INFO L185 CegarLoopUtils]: At program point L78(lines 72 81) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2021-02-24 00:17:17,952 INFO L192 CegarLoopUtils]: At program point L70-1(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,953 INFO L192 CegarLoopUtils]: At program point L70-2(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,953 INFO L192 CegarLoopUtils]: At program point L70-3(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,953 INFO L192 CegarLoopUtils]: At program point L70-4(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,953 INFO L192 CegarLoopUtils]: At program point L70-6(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,954 INFO L192 CegarLoopUtils]: At program point L70-7(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,954 INFO L192 CegarLoopUtils]: At program point L62(line 62) the Hoare annotation is: true [2021-02-24 00:17:17,954 INFO L192 CegarLoopUtils]: At program point L70-8(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,955 INFO L192 CegarLoopUtils]: At program point L70-10(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,955 INFO L192 CegarLoopUtils]: At program point L70-11(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,955 INFO L192 CegarLoopUtils]: At program point L70-12(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,955 INFO L192 CegarLoopUtils]: At program point L70-13(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,955 INFO L192 CegarLoopUtils]: At program point L70-14(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,955 INFO L192 CegarLoopUtils]: At program point L70-16(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,955 INFO L192 CegarLoopUtils]: At program point L70-17(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,956 INFO L192 CegarLoopUtils]: At program point L70-18(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,956 INFO L192 CegarLoopUtils]: At program point L70-19(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,956 INFO L192 CegarLoopUtils]: At program point L70-20(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,956 INFO L192 CegarLoopUtils]: At program point L70-21(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,956 INFO L192 CegarLoopUtils]: At program point L70-22(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L70-23(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L70-24(line 70) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L71(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L71-1(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L71-2(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L71-4(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L71-5(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,957 INFO L192 CegarLoopUtils]: At program point L71-6(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,958 INFO L192 CegarLoopUtils]: At program point L71-7(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,958 INFO L192 CegarLoopUtils]: At program point L71-8(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,960 INFO L192 CegarLoopUtils]: At program point L71-9(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,961 INFO L192 CegarLoopUtils]: At program point L63-1(lines 63 84) the Hoare annotation is: true [2021-02-24 00:17:17,962 INFO L192 CegarLoopUtils]: At program point L71-11(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,962 INFO L192 CegarLoopUtils]: At program point L63-3(lines 63 84) the Hoare annotation is: true [2021-02-24 00:17:17,963 INFO L192 CegarLoopUtils]: At program point L71-12(line 71) the Hoare annotation is: true [2021-02-24 00:17:17,963 INFO L192 CegarLoopUtils]: At program point L63-4(lines 63 84) the Hoare annotation is: true [2021-02-24 00:17:17,965 INFO L192 CegarLoopUtils]: At program point L71-13(lines 65 83) the Hoare annotation is: true [2021-02-24 00:17:17,967 INFO L192 CegarLoopUtils]: At program point L80(line 80) the Hoare annotation is: true [2021-02-24 00:17:17,968 INFO L192 CegarLoopUtils]: At program point L64(line 64) the Hoare annotation is: true [2021-02-24 00:17:17,968 INFO L192 CegarLoopUtils]: At program point L64-1(line 64) the Hoare annotation is: true [2021-02-24 00:17:17,968 INFO L192 CegarLoopUtils]: At program point L73(lines 73 75) the Hoare annotation is: true [2021-02-24 00:17:17,968 INFO L192 CegarLoopUtils]: At program point L65(line 65) the Hoare annotation is: true [2021-02-24 00:17:17,968 INFO L192 CegarLoopUtils]: At program point L65-1(line 65) the Hoare annotation is: true [2021-02-24 00:17:17,968 INFO L192 CegarLoopUtils]: At program point L65-2(lines 65 83) the Hoare annotation is: true [2021-02-24 00:17:17,968 INFO L192 CegarLoopUtils]: At program point L65-3(lines 65 83) the Hoare annotation is: true [2021-02-24 00:17:17,969 INFO L192 CegarLoopUtils]: At program point L74(line 74) the Hoare annotation is: true [2021-02-24 00:17:17,969 INFO L192 CegarLoopUtils]: At program point L66(line 66) the Hoare annotation is: true [2021-02-24 00:17:17,969 INFO L192 CegarLoopUtils]: At program point parse_expression_listFINAL(lines 58 86) the Hoare annotation is: true [2021-02-24 00:17:17,969 INFO L185 CegarLoopUtils]: At program point parse_expression_listENTRY(lines 58 86) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-24 00:17:17,969 INFO L192 CegarLoopUtils]: At program point L67-1(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,969 INFO L192 CegarLoopUtils]: At program point L67-2(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,969 INFO L192 CegarLoopUtils]: At program point L67-4(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,970 INFO L192 CegarLoopUtils]: At program point L67-5(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,971 INFO L192 CegarLoopUtils]: At program point L67-6(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,972 INFO L192 CegarLoopUtils]: At program point L67-7(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,972 INFO L192 CegarLoopUtils]: At program point parse_expression_listEXIT(lines 58 86) the Hoare annotation is: true [2021-02-24 00:17:17,972 INFO L192 CegarLoopUtils]: At program point L67-8(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,972 INFO L192 CegarLoopUtils]: At program point L67-9(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,972 INFO L185 CegarLoopUtils]: At program point L67-11(line 67) the Hoare annotation is: |parse_expression_list_#t~short10| [2021-02-24 00:17:17,973 INFO L185 CegarLoopUtils]: At program point L67-12(line 67) the Hoare annotation is: |parse_expression_list_#t~short10| [2021-02-24 00:17:17,973 INFO L185 CegarLoopUtils]: At program point L67-13(line 67) the Hoare annotation is: |parse_expression_list_#t~short10| [2021-02-24 00:17:17,973 INFO L192 CegarLoopUtils]: At program point L67-14(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,974 INFO L192 CegarLoopUtils]: At program point L67-15(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,974 INFO L192 CegarLoopUtils]: At program point L84(lines 63 84) the Hoare annotation is: true [2021-02-24 00:17:17,974 INFO L192 CegarLoopUtils]: At program point L67-16(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,974 INFO L192 CegarLoopUtils]: At program point L84-1(line 84) the Hoare annotation is: true [2021-02-24 00:17:17,974 INFO L192 CegarLoopUtils]: At program point L67-17(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,974 INFO L192 CegarLoopUtils]: At program point L84-2(line 84) the Hoare annotation is: true [2021-02-24 00:17:17,974 INFO L192 CegarLoopUtils]: At program point L67-18(line 67) the Hoare annotation is: true [2021-02-24 00:17:17,975 INFO L185 CegarLoopUtils]: At program point L76(line 76) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2021-02-24 00:17:17,975 INFO L185 CegarLoopUtils]: At program point L76-1(line 76) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2021-02-24 00:17:17,975 INFO L192 CegarLoopUtils]: At program point L68(line 68) the Hoare annotation is: true [2021-02-24 00:17:17,975 INFO L192 CegarLoopUtils]: At program point L68-1(line 68) the Hoare annotation is: true [2021-02-24 00:17:17,975 INFO L192 CegarLoopUtils]: At program point L68-2(line 68) the Hoare annotation is: true [2021-02-24 00:17:17,975 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:17:17,975 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:17:17,976 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:17:17,976 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:17:17,976 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:17:17,976 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:17:17,976 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 00:17:17,976 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:17:17,976 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:17:17,976 INFO L192 CegarLoopUtils]: At program point r_strncpyFINAL(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,977 INFO L192 CegarLoopUtils]: At program point r_strncpyEXIT(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,977 INFO L192 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,977 INFO L192 CegarLoopUtils]: At program point r_strncpyENTRY(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,977 INFO L192 CegarLoopUtils]: At program point L42-1(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,977 INFO L192 CegarLoopUtils]: At program point L42-2(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,977 INFO L192 CegarLoopUtils]: At program point L42-3(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,978 INFO L192 CegarLoopUtils]: At program point L42-4(line 42) the Hoare annotation is: true [2021-02-24 00:17:17,978 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point L95(line 95) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point L93(line 93) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point L91(line 91) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point L91-1(line 91) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point L89(line 89) the Hoare annotation is: true [2021-02-24 00:17:17,979 INFO L192 CegarLoopUtils]: At program point L91-2(line 91) the Hoare annotation is: true [2021-02-24 00:17:17,980 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 87 96) the Hoare annotation is: true [2021-02-24 00:17:17,980 INFO L192 CegarLoopUtils]: At program point L89-1(line 89) the Hoare annotation is: true [2021-02-24 00:17:17,980 INFO L192 CegarLoopUtils]: At program point L89-2(line 89) the Hoare annotation is: true [2021-02-24 00:17:17,980 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 87 96) the Hoare annotation is: true [2021-02-24 00:17:17,980 INFO L192 CegarLoopUtils]: At program point L94(line 94) the Hoare annotation is: true [2021-02-24 00:17:17,980 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 87 96) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-24 00:17:17,981 INFO L192 CegarLoopUtils]: At program point L94-1(line 94) the Hoare annotation is: true [2021-02-24 00:17:17,985 INFO L192 CegarLoopUtils]: At program point L90-2(lines 90 92) the Hoare annotation is: true [2021-02-24 00:17:17,985 INFO L192 CegarLoopUtils]: At program point L90-3(line 90) the Hoare annotation is: true [2021-02-24 00:17:17,985 INFO L192 CegarLoopUtils]: At program point L90-4(line 90) the Hoare annotation is: true [2021-02-24 00:17:17,985 INFO L192 CegarLoopUtils]: At program point L90-5(lines 90 92) the Hoare annotation is: true [2021-02-24 00:17:17,985 INFO L192 CegarLoopUtils]: At program point L90-6(lines 90 92) the Hoare annotation is: true [2021-02-24 00:17:17,986 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:17:17,986 INFO L185 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:17:17,987 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:17:17,987 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-02-24 00:17:17,987 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:17:17,987 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:17:17,988 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:17:18,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:17:18 BoogieIcfgContainer [2021-02-24 00:17:18,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:17:18,020 INFO L168 Benchmark]: Toolchain (without parser) took 4976.60 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 147.0 MB in the beginning and 83.6 MB in the end (delta: 63.4 MB). Peak memory consumption was 99.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:18,021 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 172.0 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:17:18,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.44 ms. Allocated memory is still 172.0 MB. Free memory was 146.0 MB in the beginning and 134.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:18,032 INFO L168 Benchmark]: Boogie Preprocessor took 99.97 ms. Allocated memory is still 172.0 MB. Free memory was 134.4 MB in the beginning and 132.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:18,034 INFO L168 Benchmark]: RCFGBuilder took 800.25 ms. Allocated memory is still 172.0 MB. Free memory was 132.1 MB in the beginning and 142.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:18,035 INFO L168 Benchmark]: TraceAbstraction took 3646.77 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 142.3 MB in the beginning and 83.6 MB in the end (delta: 58.7 MB). Peak memory consumption was 93.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:18,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 172.0 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 403.44 ms. Allocated memory is still 172.0 MB. Free memory was 146.0 MB in the beginning and 134.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.97 ms. Allocated memory is still 172.0 MB. Free memory was 134.4 MB in the beginning and 132.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 800.25 ms. Allocated memory is still 172.0 MB. Free memory was 132.1 MB in the beginning and 142.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3646.77 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 142.3 MB in the beginning and 83.6 MB in the end (delta: 58.7 MB). Peak memory consumption was 93.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 58]: Procedure Contract for parse_expression_list Derived contract for procedure parse_expression_list: 1 - ProcedureContractResult [Line: 42]: Procedure Contract for r_strncpy Derived contract for procedure r_strncpy: 1 - ProcedureContractResult [Line: 87]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 145 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 628 SDtfs, 102 SDslu, 812 SDs, 0 SdLazy, 732 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 140 LocationsWithAnnotation, 482 PreInvPairs, 613 NumberOfFragments, 247 HoareAnnotationTreeSize, 482 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 140 FomulaSimplificationsInter, 419 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 37021 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 18/19 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 correct! Received shutdown request...