/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 17:49:21,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:49:21,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:49:21,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 17:49:21,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 17:49:21,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 17:49:21,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 17:49:21,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 17:49:21,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 17:49:21,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 17:49:21,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 17:49:21,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 17:49:21,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 17:49:21,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 17:49:21,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 17:49:21,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 17:49:21,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 17:49:21,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 17:49:21,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 17:49:21,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 17:49:21,374 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 17:49:21,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 17:49:21,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 17:49:21,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 17:49:21,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 17:49:21,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 17:49:21,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:49:21,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:49:21,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:49:21,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 17:49:21,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:49:21,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:49:21,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:49:21,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:49:21,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:49:21,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:49:21,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:49:21,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:49:21,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:49:21,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:49:21,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:49:21,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:49:21,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:49:21,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:49:21,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:49:21,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:49:21,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:49:21,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:49:21,403 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:49:21,403 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:49:21,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:49:21,404 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 17:49:21,404 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:49:21,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:49:21,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:49:21,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:49:21,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:49:21,663 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:49:21,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-03-20 17:49:21,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b4e01577/f65b65a46f3c436195eefc967dfe1455/FLAG826f81499 [2022-03-20 17:49:22,075 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:49:22,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-03-20 17:49:22,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b4e01577/f65b65a46f3c436195eefc967dfe1455/FLAG826f81499 [2022-03-20 17:49:22,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b4e01577/f65b65a46f3c436195eefc967dfe1455 [2022-03-20 17:49:22,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:49:22,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:49:22,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:49:22,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:49:22,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:49:22,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68485c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22, skipping insertion in model container [2022-03-20 17:49:22,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:49:22,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:49:22,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-03-20 17:49:22,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:49:22,298 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:49:22,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-03-20 17:49:22,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:49:22,334 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:49:22,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22 WrapperNode [2022-03-20 17:49:22,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:49:22,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:49:22,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:49:22,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:49:22,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:49:22,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:49:22,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:49:22,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:49:22,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (1/1) ... [2022-03-20 17:49:22,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:49:22,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:49:22,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 17:49:22,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 17:49:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:49:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:49:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:49:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 17:49:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2022-03-20 17:49:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2022-03-20 17:49:22,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:49:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:49:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:49:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 17:49:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 17:49:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:49:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:49:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 17:49:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 17:49:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2022-03-20 17:49:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-03-20 17:49:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-03-20 17:49:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-03-20 17:49:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2022-03-20 17:49:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2022-03-20 17:49:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-03-20 17:49:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2022-03-20 17:49:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2022-03-20 17:49:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:49:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:49:22,570 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:49:22,583 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:49:22,835 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:49:22,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:49:22,843 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-20 17:49:22,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:49:22 BoogieIcfgContainer [2022-03-20 17:49:22,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:49:22,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:49:22,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:49:22,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:49:22,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:49:22" (1/3) ... [2022-03-20 17:49:22,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccc037f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:49:22, skipping insertion in model container [2022-03-20 17:49:22,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:49:22" (2/3) ... [2022-03-20 17:49:22,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccc037f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:49:22, skipping insertion in model container [2022-03-20 17:49:22,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:49:22" (3/3) ... [2022-03-20 17:49:22,854 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-03-20 17:49:22,858 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:49:22,859 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:49:22,902 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:49:22,909 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 17:49:22,909 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:49:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 17:49:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 17:49:22,937 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:49:22,938 INFO L499 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] [2022-03-20 17:49:22,939 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:49:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:49:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -541205821, now seen corresponding path program 1 times [2022-03-20 17:49:22,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:22,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1812644093] [2022-03-20 17:49:22,962 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:49:22,962 INFO L85 PathProgramCache]: Analyzing trace with hash -541205821, now seen corresponding path program 2 times [2022-03-20 17:49:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:49:22,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560762188] [2022-03-20 17:49:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:49:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:49:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:49:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 17:49:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:49:23,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:49:23,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560762188] [2022-03-20 17:49:23,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560762188] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:23,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:23,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:49:23,190 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:49:23,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1812644093] [2022-03-20 17:49:23,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1812644093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:23,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:23,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:49:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139254443] [2022-03-20 17:49:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:49:23,195 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:49:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:49:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 17:49:23,223 INFO L87 Difference]: Start difference. First operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:49:23,300 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2022-03-20 17:49:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:49:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-03-20 17:49:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:49:23,308 INFO L225 Difference]: With dead ends: 102 [2022-03-20 17:49:23,308 INFO L226 Difference]: Without dead ends: 47 [2022-03-20 17:49:23,312 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 17:49:23,315 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:49:23,316 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:49:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-20 17:49:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-03-20 17:49:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:49:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-03-20 17:49:23,355 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2022-03-20 17:49:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:49:23,356 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-03-20 17:49:23,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-03-20 17:49:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 17:49:23,358 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:49:23,358 INFO L499 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] [2022-03-20 17:49:23,358 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:49:23,359 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:49:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:49:23,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1555699344, now seen corresponding path program 1 times [2022-03-20 17:49:23,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:23,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1635010037] [2022-03-20 17:49:23,367 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:49:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1555699344, now seen corresponding path program 2 times [2022-03-20 17:49:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:49:23,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646962564] [2022-03-20 17:49:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:49:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:49:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:49:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 17:49:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:49:23,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:49:23,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646962564] [2022-03-20 17:49:23,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646962564] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:23,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:23,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:49:23,485 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:49:23,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1635010037] [2022-03-20 17:49:23,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1635010037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:23,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:23,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:49:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477228709] [2022-03-20 17:49:23,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:49:23,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:49:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:49:23,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:49:23,514 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:49:23,635 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2022-03-20 17:49:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 17:49:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-03-20 17:49:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:49:23,637 INFO L225 Difference]: With dead ends: 88 [2022-03-20 17:49:23,638 INFO L226 Difference]: Without dead ends: 49 [2022-03-20 17:49:23,638 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:49:23,640 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:49:23,640 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:49:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-20 17:49:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-03-20 17:49:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:49:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-03-20 17:49:23,659 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2022-03-20 17:49:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:49:23,660 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-03-20 17:49:23,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-03-20 17:49:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 17:49:23,662 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:49:23,662 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:49:23,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 17:49:23,662 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:49:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:49:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1615735470, now seen corresponding path program 1 times [2022-03-20 17:49:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:23,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1584901028] [2022-03-20 17:49:23,678 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 17:49:23,678 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:49:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1615735470, now seen corresponding path program 2 times [2022-03-20 17:49:23,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:49:23,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195789450] [2022-03-20 17:49:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:49:23,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:49:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:49:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:49:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:49:23,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:49:23,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195789450] [2022-03-20 17:49:23,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195789450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:49:23,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014202821] [2022-03-20 17:49:23,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:49:23,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:23,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:49:23,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:49:23,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 17:49:23,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:49:23,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:49:23,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 17:49:23,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:49:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:49:23,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:49:23,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014202821] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:23,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:49:23,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-03-20 17:49:23,978 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:49:23,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1584901028] [2022-03-20 17:49:23,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1584901028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:23,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:23,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 17:49:23,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054560344] [2022-03-20 17:49:23,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:49:23,980 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 17:49:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:23,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 17:49:23,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:49:23,981 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:49:24,002 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2022-03-20 17:49:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 17:49:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-03-20 17:49:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:49:24,004 INFO L225 Difference]: With dead ends: 84 [2022-03-20 17:49:24,004 INFO L226 Difference]: Without dead ends: 49 [2022-03-20 17:49:24,005 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-20 17:49:24,007 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:49:24,012 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:49:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-20 17:49:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-03-20 17:49:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:49:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-03-20 17:49:24,027 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2022-03-20 17:49:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:49:24,028 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-03-20 17:49:24,028 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-03-20 17:49:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 17:49:24,030 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:49:24,030 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:49:24,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 17:49:24,251 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:24,252 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:49:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:49:24,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1357570032, now seen corresponding path program 1 times [2022-03-20 17:49:24,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:24,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [542214872] [2022-03-20 17:49:24,257 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 17:49:24,257 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:49:24,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1357570032, now seen corresponding path program 2 times [2022-03-20 17:49:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:49:24,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680983775] [2022-03-20 17:49:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:49:24,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:49:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:49:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:49:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:49:24,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:49:24,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680983775] [2022-03-20 17:49:24,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680983775] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:49:24,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820638886] [2022-03-20 17:49:24,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:49:24,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:49:24,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:49:24,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 17:49:24,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:49:24,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:49:24,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 17:49:24,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:49:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:49:24,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:49:24,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820638886] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:24,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:49:24,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-03-20 17:49:24,626 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:49:24,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [542214872] [2022-03-20 17:49:24,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [542214872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:24,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:24,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:49:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986001845] [2022-03-20 17:49:24,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:49:24,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:49:24,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:49:24,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:49:24,628 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:49:24,743 INFO L93 Difference]: Finished difference Result 129 states and 167 transitions. [2022-03-20 17:49:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 17:49:24,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-03-20 17:49:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:49:24,745 INFO L225 Difference]: With dead ends: 129 [2022-03-20 17:49:24,745 INFO L226 Difference]: Without dead ends: 77 [2022-03-20 17:49:24,746 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:49:24,747 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 60 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:49:24,747 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 165 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:49:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-03-20 17:49:24,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2022-03-20 17:49:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 47 states have internal predecessors, (60), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:49:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2022-03-20 17:49:24,758 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 38 [2022-03-20 17:49:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:49:24,758 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2022-03-20 17:49:24,758 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2022-03-20 17:49:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 17:49:24,759 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:49:24,759 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:49:24,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 17:49:24,980 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 17:49:24,980 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:49:24,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:49:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1248453522, now seen corresponding path program 1 times [2022-03-20 17:49:24,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:24,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [829357260] [2022-03-20 17:49:24,982 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 17:49:24,982 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:49:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1248453522, now seen corresponding path program 2 times [2022-03-20 17:49:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:49:24,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370122965] [2022-03-20 17:49:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:49:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:49:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:49:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 17:49:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:49:25,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:49:25,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370122965] [2022-03-20 17:49:25,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370122965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:49:25,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778184654] [2022-03-20 17:49:25,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:49:25,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:25,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:49:25,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:49:25,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 17:49:25,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:49:25,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:49:25,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:49:25,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:49:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 17:49:25,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:49:25,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778184654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:25,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:49:25,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-03-20 17:49:25,265 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:49:25,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [829357260] [2022-03-20 17:49:25,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [829357260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:25,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:25,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:49:25,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760166791] [2022-03-20 17:49:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:49:25,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:49:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:49:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:49:25,267 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:49:25,351 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2022-03-20 17:49:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:49:25,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-03-20 17:49:25,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:49:25,353 INFO L225 Difference]: With dead ends: 118 [2022-03-20 17:49:25,353 INFO L226 Difference]: Without dead ends: 66 [2022-03-20 17:49:25,360 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:49:25,361 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 46 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:49:25,361 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 136 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:49:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-20 17:49:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2022-03-20 17:49:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:49:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-03-20 17:49:25,376 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 38 [2022-03-20 17:49:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:49:25,378 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-03-20 17:49:25,378 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-03-20 17:49:25,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-20 17:49:25,384 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:49:25,384 INFO L499 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, 1] [2022-03-20 17:49:25,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 17:49:25,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:25,600 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:49:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:49:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 237631538, now seen corresponding path program 1 times [2022-03-20 17:49:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:25,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1274783457] [2022-03-20 17:49:25,607 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 17:49:25,607 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:49:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash 237631538, now seen corresponding path program 2 times [2022-03-20 17:49:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:49:25,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868068182] [2022-03-20 17:49:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:49:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:49:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:49:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 17:49:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 17:49:25,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:49:25,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868068182] [2022-03-20 17:49:25,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868068182] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:49:25,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108338727] [2022-03-20 17:49:25,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:49:25,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:25,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:49:25,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:49:25,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 17:49:25,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:49:25,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:49:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 17:49:25,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:49:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:49:25,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:49:25,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108338727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:25,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:49:25,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-03-20 17:49:25,916 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:49:25,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1274783457] [2022-03-20 17:49:25,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1274783457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:25,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:25,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 17:49:25,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160793346] [2022-03-20 17:49:25,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:49:25,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 17:49:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 17:49:25,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:49:25,917 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:49:26,029 INFO L93 Difference]: Finished difference Result 142 states and 185 transitions. [2022-03-20 17:49:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 17:49:26,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-03-20 17:49:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:49:26,031 INFO L225 Difference]: With dead ends: 142 [2022-03-20 17:49:26,031 INFO L226 Difference]: Without dead ends: 100 [2022-03-20 17:49:26,032 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-20 17:49:26,032 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 58 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 17:49:26,032 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 169 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 17:49:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-20 17:49:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 72. [2022-03-20 17:49:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 63 states have internal predecessors, (83), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 17:49:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2022-03-20 17:49:26,044 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 43 [2022-03-20 17:49:26,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:49:26,044 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2022-03-20 17:49:26,044 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2022-03-20 17:49:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-20 17:49:26,045 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:49:26,045 INFO L499 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, 1] [2022-03-20 17:49:26,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 17:49:26,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:26,259 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:49:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:49:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1451312204, now seen corresponding path program 1 times [2022-03-20 17:49:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:26,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [734998000] [2022-03-20 17:49:26,261 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-20 17:49:26,261 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 17:49:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1451312204, now seen corresponding path program 2 times [2022-03-20 17:49:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:49:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453507531] [2022-03-20 17:49:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:49:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:49:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:49:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 17:49:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:49:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 17:49:26,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:49:26,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453507531] [2022-03-20 17:49:26,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453507531] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 17:49:26,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494957009] [2022-03-20 17:49:26,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 17:49:26,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:26,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:49:26,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 17:49:26,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 17:49:26,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-20 17:49:26,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 17:49:26,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 17:49:26,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 17:49:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-20 17:49:26,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 17:49:26,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494957009] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:26,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 17:49:26,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-03-20 17:49:26,490 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:49:26,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [734998000] [2022-03-20 17:49:26,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [734998000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:49:26,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:49:26,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 17:49:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324151761] [2022-03-20 17:49:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:49:26,500 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 17:49:26,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:49:26,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 17:49:26,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-20 17:49:26,501 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:26,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:49:26,550 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-03-20 17:49:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:49:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-03-20 17:49:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:49:26,552 INFO L225 Difference]: With dead ends: 73 [2022-03-20 17:49:26,552 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 17:49:26,552 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:49:26,553 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 17:49:26,553 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 166 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 17:49:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 17:49:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 17:49:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 17:49:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 17:49:26,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2022-03-20 17:49:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:49:26,554 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 17:49:26,554 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 17:49:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 17:49:26,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 17:49:26,557 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 17:49:26,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 17:49:26,779 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 17:49:26,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 17:49:26,918 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-03-20 17:49:26,918 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-03-20 17:49:26,918 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-03-20 17:49:26,919 INFO L885 garLoopResultBuilder]: At program point r_strncpyFINAL(line 42) the Hoare annotation is: true [2022-03-20 17:49:26,919 INFO L885 garLoopResultBuilder]: At program point r_strncpyEXIT(line 42) the Hoare annotation is: true [2022-03-20 17:49:26,919 INFO L885 garLoopResultBuilder]: At program point r_strncpyENTRY(line 42) the Hoare annotation is: true [2022-03-20 17:49:26,919 INFO L885 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: true [2022-03-20 17:49:26,919 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 87 96) the Hoare annotation is: true [2022-03-20 17:49:26,920 INFO L885 garLoopResultBuilder]: At program point L94-1(line 94) the Hoare annotation is: true [2022-03-20 17:49:26,920 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 87 96) the Hoare annotation is: true [2022-03-20 17:49:26,920 INFO L885 garLoopResultBuilder]: At program point L90-2(lines 90 92) the Hoare annotation is: true [2022-03-20 17:49:26,920 INFO L885 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2022-03-20 17:49:26,920 INFO L885 garLoopResultBuilder]: At program point L90-4(lines 90 92) the Hoare annotation is: true [2022-03-20 17:49:26,920 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 87 96) the Hoare annotation is: true [2022-03-20 17:49:26,920 INFO L878 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-03-20 17:49:26,920 INFO L878 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L73(lines 73 75) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L65(lines 65 83) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L70-1(line 70) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L70-2(line 70) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L66(line 66) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L70-4(line 70) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L70-6(line 70) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point parse_expression_listFINAL(lines 58 86) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L878 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: (and (<= 0 parse_expression_list_~start~0) (<= (+ parse_expression_list_~i~0 1) 0) (<= (+ parse_expression_list_~j~0 1) 0)) [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L70-9(line 70) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point parse_expression_listENTRY(lines 58 86) the Hoare annotation is: true [2022-03-20 17:49:26,921 INFO L885 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L71-2(line 71) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L71-4(lines 65 83) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L67-3(line 67) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L63-1(lines 63 84) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L67-6(line 67) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L63-2(lines 63 84) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point parse_expression_listEXIT(lines 58 86) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L885 garLoopResultBuilder]: At program point L63-5(lines 63 84) the Hoare annotation is: true [2022-03-20 17:49:26,922 INFO L878 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-03-20 17:49:26,922 INFO L878 garLoopResultBuilder]: At program point L76-1(line 76) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-03-20 17:49:26,923 INFO L878 garLoopResultBuilder]: At program point L72(lines 72 81) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point L68-2(line 68) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 17:49:26,923 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-20 17:49:26,923 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-03-20 17:49:26,924 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2022-03-20 17:49:26,924 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-03-20 17:49:26,924 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-03-20 17:49:26,924 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-20 17:49:26,926 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2] [2022-03-20 17:49:26,928 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 17:49:26,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:49:26 BoogieIcfgContainer [2022-03-20 17:49:26,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 17:49:26,941 INFO L158 Benchmark]: Toolchain (without parser) took 4847.01ms. Allocated memory was 203.4MB in the beginning and 285.2MB in the end (delta: 81.8MB). Free memory was 152.0MB in the beginning and 220.5MB in the end (delta: -68.5MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2022-03-20 17:49:26,941 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 203.4MB. Free memory was 168.8MB in the beginning and 168.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 17:49:26,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.58ms. Allocated memory is still 203.4MB. Free memory was 151.9MB in the beginning and 177.1MB in the end (delta: -25.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 17:49:26,942 INFO L158 Benchmark]: Boogie Preprocessor took 32.41ms. Allocated memory is still 203.4MB. Free memory was 177.1MB in the beginning and 175.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 17:49:26,942 INFO L158 Benchmark]: RCFGBuilder took 476.37ms. Allocated memory is still 203.4MB. Free memory was 175.1MB in the beginning and 159.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-03-20 17:49:26,943 INFO L158 Benchmark]: TraceAbstraction took 4092.67ms. Allocated memory was 203.4MB in the beginning and 285.2MB in the end (delta: 81.8MB). Free memory was 159.0MB in the beginning and 220.5MB in the end (delta: -61.5MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. [2022-03-20 17:49:26,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 203.4MB. Free memory was 168.8MB in the beginning and 168.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.58ms. Allocated memory is still 203.4MB. Free memory was 151.9MB in the beginning and 177.1MB in the end (delta: -25.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.41ms. Allocated memory is still 203.4MB. Free memory was 177.1MB in the beginning and 175.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 476.37ms. Allocated memory is still 203.4MB. Free memory was 175.1MB in the beginning and 159.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4092.67ms. Allocated memory was 203.4MB in the beginning and 285.2MB in the end (delta: 81.8MB). Free memory was 159.0MB in the beginning and 220.5MB in the end (delta: -61.5MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 299 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287 mSDsluCounter, 872 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 513 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 371 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 359 mSDtfsCounter, 371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=6, InterpolantAutomatonStates: 33, 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, 7 MinimizatonAttempts, 65 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 171 PreInvPairs, 276 NumberOfFragments, 126 HoareAnnotationTreeSize, 171 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 55 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 58]: Procedure Contract for parse_expression_list Derived contract for procedure parse_expression_list: 1 - ProcedureContractResult [Line: 42]: Procedure Contract for r_strncpy Derived contract for procedure r_strncpy: 1 - ProcedureContractResult [Line: 87]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(1 <= \old(cond)) || 1 <= cond RESULT: Ultimate proved your program to be correct! [2022-03-20 17:49:26,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...