/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-05 23:38:23,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-05 23:38:23,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-05 23:38:23,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-05 23:38:23,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-05 23:38:23,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-05 23:38:23,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-05 23:38:23,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-05 23:38:23,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-05 23:38:23,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-05 23:38:23,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-05 23:38:23,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-05 23:38:23,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-05 23:38:23,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-05 23:38:23,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-05 23:38:23,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-05 23:38:23,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-05 23:38:23,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-05 23:38:23,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-05 23:38:23,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-05 23:38:23,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-05 23:38:23,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-05 23:38:23,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-05 23:38:23,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-05 23:38:23,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-05 23:38:23,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-05 23:38:23,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-05 23:38:23,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-05 23:38:23,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-05 23:38:23,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-05 23:38:23,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-05 23:38:23,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-05 23:38:23,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-05 23:38:23,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-05 23:38:23,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-05 23:38:23,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-05 23:38:23,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-05 23:38:23,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-05 23:38:23,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-05 23:38:23,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-05 23:38:23,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-05 23:38:23,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-05 23:38:23,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-05 23:38:23,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-05 23:38:23,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-05 23:38:23,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-05 23:38:23,433 INFO L138 SettingsManager]: * Use SBE=true [2021-05-05 23:38:23,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-05 23:38:23,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-05 23:38:23,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-05 23:38:23,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-05 23:38:23,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-05 23:38:23,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-05 23:38:23,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-05 23:38:23,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-05 23:38:23,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-05 23:38:23,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-05 23:38:23,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-05 23:38:23,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-05 23:38:23,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-05 23:38:23,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-05 23:38:23,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-05 23:38:23,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-05 23:38:23,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-05 23:38:23,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-05 23:38:23,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-05 23:38:23,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-05 23:38:23,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-05 23:38:23,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-05 23:38:23,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-05 23:38:23,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-05 23:38:23,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-05 23:38:23,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-05 23:38:23,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-05 23:38:23,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-05 23:38:23,731 INFO L275 PluginConnector]: CDTParser initialized [2021-05-05 23:38:23,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-05-05 23:38:23,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/597d099e1/8c18a5ba70704f248d8625e103c85146/FLAG053fd7d9b [2021-05-05 23:38:24,134 INFO L306 CDTParser]: Found 1 translation units. [2021-05-05 23:38:24,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-05-05 23:38:24,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/597d099e1/8c18a5ba70704f248d8625e103c85146/FLAG053fd7d9b [2021-05-05 23:38:24,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/597d099e1/8c18a5ba70704f248d8625e103c85146 [2021-05-05 23:38:24,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-05 23:38:24,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-05 23:38:24,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-05 23:38:24,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-05 23:38:24,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-05 23:38:24,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3c3e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24, skipping insertion in model container [2021-05-05 23:38:24,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-05 23:38:24,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-05 23:38:24,245 WARN L224 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_NetBSD-libc_loop.i[825,838] [2021-05-05 23:38:24,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-05 23:38:24,259 INFO L203 MainTranslator]: Completed pre-run [2021-05-05 23:38:24,293 WARN L224 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_NetBSD-libc_loop.i[825,838] [2021-05-05 23:38:24,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-05 23:38:24,311 INFO L208 MainTranslator]: Completed translation [2021-05-05 23:38:24,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24 WrapperNode [2021-05-05 23:38:24,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-05 23:38:24,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-05 23:38:24,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-05 23:38:24,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-05 23:38:24,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... [2021-05-05 23:38:24,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-05 23:38:24,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-05 23:38:24,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-05 23:38:24,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-05 23:38:24,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-05 23:38:24,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-05 23:38:24,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-05 23:38:24,413 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-05 23:38:24,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-05 23:38:24,413 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2021-05-05 23:38:24,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-05 23:38:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-05 23:38:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-05 23:38:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-05 23:38:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-05 23:38:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-05 23:38:24,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-05 23:38:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-05 23:38:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2021-05-05 23:38:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-05 23:38:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-05 23:38:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-05 23:38:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-05 23:38:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-05 23:38:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-05 23:38:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-05 23:38:24,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-05 23:38:24,668 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-05 23:38:24,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.05 11:38:24 BoogieIcfgContainer [2021-05-05 23:38:24,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-05 23:38:24,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-05 23:38:24,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-05 23:38:24,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-05 23:38:24,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.05 11:38:24" (1/3) ... [2021-05-05 23:38:24,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faa8609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.05 11:38:24, skipping insertion in model container [2021-05-05 23:38:24,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.05 11:38:24" (2/3) ... [2021-05-05 23:38:24,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faa8609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.05 11:38:24, skipping insertion in model container [2021-05-05 23:38:24,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.05 11:38:24" (3/3) ... [2021-05-05 23:38:24,674 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2021-05-05 23:38:24,678 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-05 23:38:24,681 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-05 23:38:24,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-05 23:38:24,721 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-05 23:38:24,721 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-05 23:38:24,721 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-05 23:38:24,721 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-05 23:38:24,721 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-05 23:38:24,721 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-05 23:38:24,721 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-05 23:38:24,722 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-05 23:38:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-05 23:38:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-05 23:38:24,743 INFO L515 BasicCegarLoop]: Found error trace [2021-05-05 23:38:24,743 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-05 23:38:24,744 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-05 23:38:24,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-05 23:38:24,749 INFO L82 PathProgramCache]: Analyzing trace with hash 49640583, now seen corresponding path program 1 times [2021-05-05 23:38:24,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-05 23:38:24,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911206975] [2021-05-05 23:38:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-05 23:38:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-05 23:38:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-05 23:38:25,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-05 23:38:25,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911206975] [2021-05-05 23:38:25,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911206975] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-05 23:38:25,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-05 23:38:25,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-05 23:38:25,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274130477] [2021-05-05 23:38:25,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-05 23:38:25,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-05 23:38:25,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-05 23:38:25,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-05 23:38:25,088 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-05 23:38:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-05 23:38:25,449 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-05-05 23:38:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-05 23:38:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-05 23:38:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-05 23:38:25,454 INFO L225 Difference]: With dead ends: 55 [2021-05-05 23:38:25,454 INFO L226 Difference]: Without dead ends: 26 [2021-05-05 23:38:25,456 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 302.0ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-05 23:38:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-05 23:38:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-05 23:38:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-05 23:38:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-05 23:38:25,480 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2021-05-05 23:38:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-05 23:38:25,480 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-05 23:38:25,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-05 23:38:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-05 23:38:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-05 23:38:25,481 INFO L515 BasicCegarLoop]: Found error trace [2021-05-05 23:38:25,481 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-05 23:38:25,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-05 23:38:25,481 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-05 23:38:25,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-05 23:38:25,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1781648093, now seen corresponding path program 1 times [2021-05-05 23:38:25,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-05 23:38:25,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653245056] [2021-05-05 23:38:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-05 23:38:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-05 23:38:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-05 23:38:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-05 23:38:25,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-05 23:38:25,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653245056] [2021-05-05 23:38:25,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653245056] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-05 23:38:25,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548941889] [2021-05-05 23:38:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-05 23:38:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:25,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-05 23:38:25,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-05 23:38:25,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-05 23:38:25,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548941889] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-05 23:38:25,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-05 23:38:25,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-05 23:38:25,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126671757] [2021-05-05 23:38:25,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-05 23:38:25,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-05 23:38:25,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-05 23:38:25,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-05-05 23:38:25,911 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-05 23:38:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-05 23:38:26,188 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-05-05 23:38:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-05 23:38:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2021-05-05 23:38:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-05 23:38:26,193 INFO L225 Difference]: With dead ends: 36 [2021-05-05 23:38:26,193 INFO L226 Difference]: Without dead ends: 34 [2021-05-05 23:38:26,196 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 252.4ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-05 23:38:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-05 23:38:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-05-05 23:38:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-05 23:38:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-05 23:38:26,211 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2021-05-05 23:38:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-05 23:38:26,211 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-05 23:38:26,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-05 23:38:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-05 23:38:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-05 23:38:26,212 INFO L515 BasicCegarLoop]: Found error trace [2021-05-05 23:38:26,212 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-05 23:38:26,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-05 23:38:26,421 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-05 23:38:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-05 23:38:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1581946061, now seen corresponding path program 2 times [2021-05-05 23:38:26,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-05 23:38:26,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797695755] [2021-05-05 23:38:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-05 23:38:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-05 23:38:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-05 23:38:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:26,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-05 23:38:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-05 23:38:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-05 23:38:26,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-05 23:38:26,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797695755] [2021-05-05 23:38:26,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797695755] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-05 23:38:26,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956217835] [2021-05-05 23:38:26,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-05 23:38:26,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-05 23:38:26,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-05 23:38:26,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-05 23:38:26,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-05 23:38:26,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-05 23:38:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-05 23:38:26,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956217835] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-05 23:38:26,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-05 23:38:26,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-05 23:38:26,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389014435] [2021-05-05 23:38:26,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-05 23:38:26,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-05 23:38:26,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-05 23:38:26,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-05-05 23:38:26,764 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-05 23:38:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-05 23:38:26,963 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-05-05 23:38:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-05 23:38:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-05-05 23:38:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-05 23:38:26,967 INFO L225 Difference]: With dead ends: 32 [2021-05-05 23:38:26,967 INFO L226 Difference]: Without dead ends: 0 [2021-05-05 23:38:26,967 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 238.8ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-05-05 23:38:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-05 23:38:26,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-05 23:38:26,968 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) [2021-05-05 23:38:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-05 23:38:26,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-05-05 23:38:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-05 23:38:26,968 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-05 23:38:26,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-05 23:38:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-05 23:38:26,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-05 23:38:27,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-05 23:38:27,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-05 23:38:27,374 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-05 23:38:27,374 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-05 23:38:27,374 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-05 23:38:27,374 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-05 23:38:27,374 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~tmp~0.base |old(~tmp~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-05 23:38:27,374 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-05 23:38:27,374 INFO L194 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= ~tmp~0.base |glob2_#in~pathlim.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (and (= glob2_~pathlim.base ~tmp~0.base) (<= glob2_~p~0.offset ~tmp~0.offset) (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base)) (not (<= 4 ~tmp~0.offset))) [2021-05-05 23:38:27,375 INFO L201 CegarLoopUtils]: At program point glob2ENTRY(lines 25 36) the Hoare annotation is: true [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point L31-1(line 31) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L194 CegarLoopUtils]: At program point L29-3(lines 29 33) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (and (= glob2_~pathlim.base ~tmp~0.base) (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= ~tmp~0.base |glob2_#in~pathlim.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (not (<= 4 ~tmp~0.offset))) [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point glob2EXIT(lines 25 36) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point glob2FINAL(lines 25 36) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-05 23:38:27,375 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L194 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (and (= ~tmp~0.base main_~bound~0.base) (<= (+ |main_~#pathbuf~0.offset| 4) ~tmp~0.offset) (<= main_~bound~0.offset ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|) (= |main_~#pathbuf~0.offset| 0)) [2021-05-05 23:38:27,375 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 38 49) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(~tmp~0.base)| ~tmp~0.base) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point L46-1(line 46) no Hoare annotation was computed. [2021-05-05 23:38:27,375 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 38 49) no Hoare annotation was computed. [2021-05-05 23:38:27,376 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 38 49) no Hoare annotation was computed. [2021-05-05 23:38:27,376 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-05 23:38:27,376 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-05-05 23:38:27,376 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-05-05 23:38:27,376 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2021-05-05 23:38:27,376 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2021-05-05 23:38:27,376 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-05-05 23:38:27,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.05 11:38:27 BoogieIcfgContainer [2021-05-05 23:38:27,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-05 23:38:27,387 INFO L168 Benchmark]: Toolchain (without parser) took 3236.09 ms. Allocated memory was 222.3 MB in the beginning and 271.6 MB in the end (delta: 49.3 MB). Free memory was 185.9 MB in the beginning and 147.4 MB in the end (delta: 38.4 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. [2021-05-05 23:38:27,387 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 222.3 MB. Free memory is still 202.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-05 23:38:27,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.45 ms. Allocated memory is still 222.3 MB. Free memory was 185.7 MB in the beginning and 204.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-05-05 23:38:27,387 INFO L168 Benchmark]: Boogie Preprocessor took 37.55 ms. Allocated memory is still 222.3 MB. Free memory was 204.2 MB in the beginning and 202.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-05 23:38:27,387 INFO L168 Benchmark]: RCFGBuilder took 318.11 ms. Allocated memory is still 222.3 MB. Free memory was 202.5 MB in the beginning and 186.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-05 23:38:27,387 INFO L168 Benchmark]: TraceAbstraction took 2715.76 ms. Allocated memory was 222.3 MB in the beginning and 271.6 MB in the end (delta: 49.3 MB). Free memory was 186.2 MB in the beginning and 147.4 MB in the end (delta: 38.8 MB). Peak memory consumption was 87.5 MB. Max. memory is 8.0 GB. [2021-05-05 23:38:27,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 222.3 MB. Free memory is still 202.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 160.45 ms. Allocated memory is still 222.3 MB. Free memory was 185.7 MB in the beginning and 204.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.55 ms. Allocated memory is still 222.3 MB. Free memory was 204.2 MB in the beginning and 202.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 318.11 ms. Allocated memory is still 222.3 MB. Free memory was 202.5 MB in the beginning and 186.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2715.76 ms. Allocated memory was 222.3 MB in the beginning and 271.6 MB in the end (delta: 49.3 MB). Free memory was 186.2 MB in the beginning and 147.4 MB in the end (delta: 38.8 MB). Peak memory consumption was 87.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2465.1ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 12.4ms, AutomataDifference: 867.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 189.3ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 92 SDslu, 146 SDs, 0 SdLazy, 351 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 242.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 793.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 131 HoareAnnotationTreeSize, 12 FomulaSimplifications, 179 FormulaSimplificationTreeSizeReduction, 45.3ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 259 FormulaSimplificationTreeSizeReductionInter, 135.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 38.2ms SsaConstructionTime, 129.0ms SatisfiabilityAnalysisTime, 791.2ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 534 SizeOfPredicates, 14 NumberOfNonLiveVariables, 283 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 32/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((!(pathlim <= tmp) || ((pathlim == tmp && pathlim <= tmp) && tmp == p)) || !(tmp == pathbuf)) || !(tmp == pathlim)) || !(pathbuf == 0)) || !(4 <= tmp) RESULT: Ultimate proved your program to be correct! Received shutdown request...