/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 -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 0.2.0-7d8eed3 [2020-11-06 22:45:35,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:35,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:35,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:35,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:35,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:35,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:35,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:35,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:35,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:35,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:35,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:35,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:35,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:35,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:35,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:35,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:35,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:35,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:35,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:35,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:35,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:35,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:35,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:35,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:45:35,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:35,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:35,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:35,345 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 [2020-11-06 22:45:35,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:35,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:35,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:35,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:35,408 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:35,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:35,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:35,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:35,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:35,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:35,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:35,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:35,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:35,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:35,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:35,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:35,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:35,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:35,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:35,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:35,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:35,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:35,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:35,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:35,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:35,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:35,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:35,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:35,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:35,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:35,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:35,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:35,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:35,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:35,911 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:35,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-11-06 22:45:36,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8350ab5/4f799f70c25b4f269e79fadd684a9d48/FLAGff9460954 [2020-11-06 22:45:36,649 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:36,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-11-06 22:45:36,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8350ab5/4f799f70c25b4f269e79fadd684a9d48/FLAGff9460954 [2020-11-06 22:45:36,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8350ab5/4f799f70c25b4f269e79fadd684a9d48 [2020-11-06 22:45:36,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:37,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:37,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:37,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:37,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:37,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:36" (1/1) ... [2020-11-06 22:45:37,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a50f6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37, skipping insertion in model container [2020-11-06 22:45:37,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:36" (1/1) ... [2020-11-06 22:45:37,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:37,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:37,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:37,249 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:37,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:37,311 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:37,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37 WrapperNode [2020-11-06 22:45:37,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:37,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:37,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:37,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:37,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (1/1) ... [2020-11-06 22:45:37,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (1/1) ... [2020-11-06 22:45:37,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (1/1) ... [2020-11-06 22:45:37,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (1/1) ... [2020-11-06 22:45:37,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (1/1) ... [2020-11-06 22:45:37,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (1/1) ... [2020-11-06 22:45:37,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (1/1) ... [2020-11-06 22:45:37,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:37,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:37,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:37,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:37,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (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 [2020-11-06 22:45:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-11-06 22:45:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-11-06 22:45:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-11-06 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-11-06 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-11-06 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-11-06 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-11-06 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-11-06 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-11-06 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-11-06 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-11-06 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-11-06 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-11-06 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-11-06 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-11-06 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-11-06 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-11-06 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-11-06 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-11-06 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-11-06 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-11-06 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-11-06 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-11-06 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-11-06 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-11-06 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-11-06 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-11-06 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-11-06 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:37,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:37,917 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:45:37,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:37 BoogieIcfgContainer [2020-11-06 22:45:37,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:37,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:37,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:37,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:37,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:36" (1/3) ... [2020-11-06 22:45:37,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f059abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:37, skipping insertion in model container [2020-11-06 22:45:37,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:37" (2/3) ... [2020-11-06 22:45:37,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f059abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:37, skipping insertion in model container [2020-11-06 22:45:37,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:37" (3/3) ... [2020-11-06 22:45:37,929 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-11-06 22:45:37,946 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:37,951 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:37,966 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:38,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:38,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:38,013 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:38,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:38,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:38,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:38,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:38,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-06 22:45:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:45:38,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:38,059 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] [2020-11-06 22:45:38,059 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:38,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1243057979, now seen corresponding path program 1 times [2020-11-06 22:45:38,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:38,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561329794] [2020-11-06 22:45:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-06 22:45:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:38,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561329794] [2020-11-06 22:45:38,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:38,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:45:38,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162410268] [2020-11-06 22:45:38,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:45:38,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:38,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:45:38,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:45:38,466 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-11-06 22:45:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:38,707 INFO L93 Difference]: Finished difference Result 100 states and 133 transitions. [2020-11-06 22:45:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:45:38,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-06 22:45:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:38,718 INFO L225 Difference]: With dead ends: 100 [2020-11-06 22:45:38,719 INFO L226 Difference]: Without dead ends: 45 [2020-11-06 22:45:38,723 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 [2020-11-06 22:45:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-06 22:45:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-06 22:45:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-06 22:45:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-11-06 22:45:38,775 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2020-11-06 22:45:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:38,775 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-11-06 22:45:38,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:45:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-11-06 22:45:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 22:45:38,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:38,778 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] [2020-11-06 22:45:38,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:45:38,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:38,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:38,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1651644, now seen corresponding path program 1 times [2020-11-06 22:45:38,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:38,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049886412] [2020-11-06 22:45:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-06 22:45:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:38,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049886412] [2020-11-06 22:45:38,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:38,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:45:38,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581673442] [2020-11-06 22:45:38,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:45:38,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:38,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:45:38,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:45:38,902 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 4 states. [2020-11-06 22:45:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:39,045 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-11-06 22:45:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:45:39,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-06 22:45:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:39,047 INFO L225 Difference]: With dead ends: 82 [2020-11-06 22:45:39,048 INFO L226 Difference]: Without dead ends: 46 [2020-11-06 22:45:39,049 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 [2020-11-06 22:45:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-06 22:45:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-06 22:45:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-06 22:45:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-11-06 22:45:39,062 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 35 [2020-11-06 22:45:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:39,062 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-11-06 22:45:39,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:45:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-11-06 22:45:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 22:45:39,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:39,064 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] [2020-11-06 22:45:39,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:45:39,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1803786690, now seen corresponding path program 1 times [2020-11-06 22:45:39,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:39,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191419722] [2020-11-06 22:45:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:39,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-06 22:45:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:39,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191419722] [2020-11-06 22:45:39,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:39,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:45:39,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587554065] [2020-11-06 22:45:39,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:45:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:45:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:45:39,198 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 6 states. [2020-11-06 22:45:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:39,420 INFO L93 Difference]: Finished difference Result 110 states and 140 transitions. [2020-11-06 22:45:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:45:39,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-11-06 22:45:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:39,424 INFO L225 Difference]: With dead ends: 110 [2020-11-06 22:45:39,433 INFO L226 Difference]: Without dead ends: 73 [2020-11-06 22:45:39,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:45:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-06 22:45:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-11-06 22:45:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-06 22:45:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-11-06 22:45:39,450 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 35 [2020-11-06 22:45:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:39,451 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-11-06 22:45:39,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:45:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-11-06 22:45:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 22:45:39,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:39,452 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] [2020-11-06 22:45:39,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:45:39,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash 893257342, now seen corresponding path program 1 times [2020-11-06 22:45:39,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:39,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130927408] [2020-11-06 22:45:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-06 22:45:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:39,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130927408] [2020-11-06 22:45:39,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:39,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:45:39,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310542540] [2020-11-06 22:45:39,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:45:39,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:39,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:45:39,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:45:39,678 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 9 states. [2020-11-06 22:45:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:40,077 INFO L93 Difference]: Finished difference Result 162 states and 211 transitions. [2020-11-06 22:45:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:45:40,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-06 22:45:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:40,079 INFO L225 Difference]: With dead ends: 162 [2020-11-06 22:45:40,079 INFO L226 Difference]: Without dead ends: 92 [2020-11-06 22:45:40,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:45:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-06 22:45:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 61. [2020-11-06 22:45:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-06 22:45:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-11-06 22:45:40,090 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 35 [2020-11-06 22:45:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:40,091 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-11-06 22:45:40,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:45:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-11-06 22:45:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 22:45:40,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:40,092 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] [2020-11-06 22:45:40,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:45:40,093 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:40,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:40,093 INFO L82 PathProgramCache]: Analyzing trace with hash 75608892, now seen corresponding path program 1 times [2020-11-06 22:45:40,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:40,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421290119] [2020-11-06 22:45:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-06 22:45:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:40,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421290119] [2020-11-06 22:45:40,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:40,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:45:40,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251900883] [2020-11-06 22:45:40,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:45:40,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:45:40,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:45:40,273 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 8 states. [2020-11-06 22:45:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:40,645 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2020-11-06 22:45:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:45:40,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-11-06 22:45:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:40,648 INFO L225 Difference]: With dead ends: 117 [2020-11-06 22:45:40,648 INFO L226 Difference]: Without dead ends: 113 [2020-11-06 22:45:40,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:45:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-06 22:45:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2020-11-06 22:45:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-06 22:45:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2020-11-06 22:45:40,663 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 35 [2020-11-06 22:45:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:40,663 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2020-11-06 22:45:40,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:45:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2020-11-06 22:45:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-06 22:45:40,666 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:40,666 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] [2020-11-06 22:45:40,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:45:40,666 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:40,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1809033399, now seen corresponding path program 1 times [2020-11-06 22:45:40,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:40,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911673349] [2020-11-06 22:45:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 22:45:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:40,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911673349] [2020-11-06 22:45:40,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:40,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:45:40,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043471940] [2020-11-06 22:45:40,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:45:40,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:40,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:45:40,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:45:40,736 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand 5 states. [2020-11-06 22:45:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:40,850 INFO L93 Difference]: Finished difference Result 157 states and 198 transitions. [2020-11-06 22:45:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:45:40,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-11-06 22:45:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:40,854 INFO L225 Difference]: With dead ends: 157 [2020-11-06 22:45:40,854 INFO L226 Difference]: Without dead ends: 101 [2020-11-06 22:45:40,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:45:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-06 22:45:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-11-06 22:45:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-06 22:45:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2020-11-06 22:45:40,865 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 37 [2020-11-06 22:45:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:40,866 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2020-11-06 22:45:40,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:45:40,866 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2020-11-06 22:45:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-06 22:45:40,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:40,868 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] [2020-11-06 22:45:40,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 22:45:40,868 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:40,869 INFO L82 PathProgramCache]: Analyzing trace with hash -185111307, now seen corresponding path program 1 times [2020-11-06 22:45:40,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:40,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081979598] [2020-11-06 22:45:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 22:45:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:40,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081979598] [2020-11-06 22:45:40,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:40,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:45:40,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951957781] [2020-11-06 22:45:40,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:45:40,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:45:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:45:40,953 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand 7 states. [2020-11-06 22:45:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:41,196 INFO L93 Difference]: Finished difference Result 196 states and 243 transitions. [2020-11-06 22:45:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:45:41,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-11-06 22:45:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:41,199 INFO L225 Difference]: With dead ends: 196 [2020-11-06 22:45:41,199 INFO L226 Difference]: Without dead ends: 122 [2020-11-06 22:45:41,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:45:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-06 22:45:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 92. [2020-11-06 22:45:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-06 22:45:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2020-11-06 22:45:41,209 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 37 [2020-11-06 22:45:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:41,210 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2020-11-06 22:45:41,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:45:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2020-11-06 22:45:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-06 22:45:41,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:41,211 INFO L422 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] [2020-11-06 22:45:41,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 22:45:41,212 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:41,212 INFO L82 PathProgramCache]: Analyzing trace with hash 70536640, now seen corresponding path program 1 times [2020-11-06 22:45:41,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:41,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687875359] [2020-11-06 22:45:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-06 22:45:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:45:41,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687875359] [2020-11-06 22:45:41,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:41,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:45:41,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661816036] [2020-11-06 22:45:41,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:45:41,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:41,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:45:41,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:45:41,339 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand 9 states. [2020-11-06 22:45:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:41,752 INFO L93 Difference]: Finished difference Result 175 states and 216 transitions. [2020-11-06 22:45:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-06 22:45:41,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-11-06 22:45:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:41,758 INFO L225 Difference]: With dead ends: 175 [2020-11-06 22:45:41,758 INFO L226 Difference]: Without dead ends: 127 [2020-11-06 22:45:41,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:45:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-06 22:45:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 106. [2020-11-06 22:45:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-06 22:45:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2020-11-06 22:45:41,784 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 40 [2020-11-06 22:45:41,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:41,786 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2020-11-06 22:45:41,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:45:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2020-11-06 22:45:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-06 22:45:41,791 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:41,792 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:41,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 22:45:41,792 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash -764578183, now seen corresponding path program 1 times [2020-11-06 22:45:41,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:41,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091780999] [2020-11-06 22:45:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-06 22:45:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:41,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091780999] [2020-11-06 22:45:41,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083431223] [2020-11-06 22:45:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:42,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:45:42,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:42,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:42,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:42,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-11-06 22:45:42,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490397168] [2020-11-06 22:45:42,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:45:42,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:42,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:45:42,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:45:42,097 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand 8 states. [2020-11-06 22:45:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:42,456 INFO L93 Difference]: Finished difference Result 259 states and 320 transitions. [2020-11-06 22:45:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:45:42,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-11-06 22:45:42,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:42,459 INFO L225 Difference]: With dead ends: 259 [2020-11-06 22:45:42,459 INFO L226 Difference]: Without dead ends: 181 [2020-11-06 22:45:42,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:45:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-06 22:45:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 143. [2020-11-06 22:45:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-06 22:45:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2020-11-06 22:45:42,484 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 173 transitions. Word has length 42 [2020-11-06 22:45:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:42,485 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 173 transitions. [2020-11-06 22:45:42,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:45:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 173 transitions. [2020-11-06 22:45:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-06 22:45:42,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:42,486 INFO L422 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, 1, 1] [2020-11-06 22:45:42,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-06 22:45:42,688 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1640570633, now seen corresponding path program 2 times [2020-11-06 22:45:42,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:42,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277271412] [2020-11-06 22:45:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:42,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 22:45:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:42,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277271412] [2020-11-06 22:45:42,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92028842] [2020-11-06 22:45:42,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:43,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:45:43,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:43,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-06 22:45:43,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:43,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:43,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-11-06 22:45:43,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013541439] [2020-11-06 22:45:43,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-06 22:45:43,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:43,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-06 22:45:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-11-06 22:45:43,311 INFO L87 Difference]: Start difference. First operand 143 states and 173 transitions. Second operand 19 states. [2020-11-06 22:45:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:44,226 INFO L93 Difference]: Finished difference Result 289 states and 354 transitions. [2020-11-06 22:45:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 22:45:44,226 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-11-06 22:45:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:44,229 INFO L225 Difference]: With dead ends: 289 [2020-11-06 22:45:44,229 INFO L226 Difference]: Without dead ends: 196 [2020-11-06 22:45:44,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-11-06 22:45:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-06 22:45:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 135. [2020-11-06 22:45:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-11-06 22:45:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2020-11-06 22:45:44,245 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 47 [2020-11-06 22:45:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:44,245 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2020-11-06 22:45:44,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-06 22:45:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2020-11-06 22:45:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-06 22:45:44,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:44,247 INFO L422 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, 1, 1] [2020-11-06 22:45:44,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-06 22:45:44,452 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:44,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1421715915, now seen corresponding path program 1 times [2020-11-06 22:45:44,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:44,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869931188] [2020-11-06 22:45:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:44,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-06 22:45:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:44,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869931188] [2020-11-06 22:45:44,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327678694] [2020-11-06 22:45:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:44,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 22:45:44,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:44,958 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:44,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:45,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:45:45,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-11-06 22:45:45,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204282318] [2020-11-06 22:45:45,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-06 22:45:45,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:45,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-06 22:45:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-11-06 22:45:45,038 INFO L87 Difference]: Start difference. First operand 135 states and 166 transitions. Second operand 19 states. [2020-11-06 22:45:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:45,935 INFO L93 Difference]: Finished difference Result 221 states and 272 transitions. [2020-11-06 22:45:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 22:45:45,936 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-11-06 22:45:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:45,940 INFO L225 Difference]: With dead ends: 221 [2020-11-06 22:45:45,940 INFO L226 Difference]: Without dead ends: 217 [2020-11-06 22:45:45,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-11-06 22:45:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-06 22:45:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 154. [2020-11-06 22:45:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-06 22:45:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 195 transitions. [2020-11-06 22:45:45,962 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 195 transitions. Word has length 47 [2020-11-06 22:45:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:45,962 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 195 transitions. [2020-11-06 22:45:45,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-06 22:45:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 195 transitions. [2020-11-06 22:45:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-06 22:45:45,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:45,965 INFO L422 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, 1, 1] [2020-11-06 22:45:46,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-06 22:45:46,172 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:46,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:46,173 INFO L82 PathProgramCache]: Analyzing trace with hash -2008521929, now seen corresponding path program 1 times [2020-11-06 22:45:46,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:46,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261893784] [2020-11-06 22:45:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:46,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:46,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:46,288 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:45:46,288 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:45:46,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-06 22:45:46,350 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,354 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,360 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,361 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,362 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,364 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,365 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,366 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,367 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,368 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,369 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-06 22:45:46,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:46 BoogieIcfgContainer [2020-11-06 22:45:46,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:46,398 INFO L168 Benchmark]: Toolchain (without parser) took 9399.42 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 135.4 MB in the beginning and 153.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 53.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:46,398 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 100.4 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:46,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.63 ms. Allocated memory is still 160.4 MB. Free memory was 134.6 MB in the beginning and 123.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:46,401 INFO L168 Benchmark]: Boogie Preprocessor took 55.92 ms. Allocated memory is still 160.4 MB. Free memory was 123.2 MB in the beginning and 121.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:46,402 INFO L168 Benchmark]: RCFGBuilder took 549.73 ms. Allocated memory is still 160.4 MB. Free memory was 121.2 MB in the beginning and 127.6 MB in the end (delta: -6.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:46,403 INFO L168 Benchmark]: TraceAbstraction took 8472.77 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 127.6 MB in the beginning and 153.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:46,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 100.4 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.63 ms. Allocated memory is still 160.4 MB. Free memory was 134.6 MB in the beginning and 123.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.92 ms. Allocated memory is still 160.4 MB. Free memory was 123.2 MB in the beginning and 121.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 549.73 ms. Allocated memory is still 160.4 MB. Free memory was 121.2 MB in the beginning and 127.6 MB in the end (delta: -6.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8472.77 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 127.6 MB in the beginning and 153.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch7 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 VAL [A={6:0}] [L87] CALL parse_expression_list (A) VAL [str={6:0}] [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; VAL [i=-1, j=-1, start=0, str={6:0}, str={6:0}, str2={3:0}] [L61] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={6:0}, str={6:0}, str2={3:0}] [L63] i++ [L64] str[i] [L65] case 0: VAL [i=0, j=-1, start=0, str={6:0}, str={6:0}, str2={3:0}, str[i]=-1] [L80] EXPR str[i] VAL [i=0, j=-1, start=0, str={6:0}, str={6:0}, str2={3:0}, str[i]=-1] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=1, j=-1, start=0, str={6:0}, str={6:0}, str2={3:0}, str[i]=54] [L80] EXPR str[i] VAL [i=1, j=-1, start=0, str={6:0}, str={6:0}, str2={3:0}, str[i]=54] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: VAL [i=2, j=-1, start=0, str={6:0}, str={6:0}, 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={6:0}, str={6:0}, str2={3:0}, str[i]=0, str[start]=-1, str[start]=-1] [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] VAL [i=2, j=-1, start=0, str={6:0}, str={6:0}, str2={3:0}, str[i]=0, str[start]=-1] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 VAL [i=2, j=1, start=0, str={6:0}, str={6:0}, 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={6:0}, str={6:0}, str2={3:0}, str[i]=0, str[j]=54, str[j]=54] [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={6:0}, str={6:0}, str2={3:0}, str[i]=0, str[j]=54, str[j]=54] [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={6:0}, str={6:0}, str2={3:0}, str[i]=0, str[j]=54] [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j VAL [i=2, j=1, start=0, str={6:0}, str={6:0}, str2={3:0}, str[i]=0] [L72] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={6:0}] [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)={52:55}, start=0, str={6:0}, str={6:0}, 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] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "verisec_OpenSER_cases1_stripFullBoth_arr.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 552 SDtfs, 1105 SDslu, 1788 SDs, 0 SdLazy, 2313 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=11, 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, 11 MinimizatonAttempts, 283 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 604 NumberOfCodeBlocks, 604 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 543 ConstructedInterpolants, 0 QuantifiedInterpolants, 77053 SizeOfPredicates, 8 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2/42 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! Received shutdown request...