/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:33:22,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:33:22,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:33:22,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:33:22,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:33:22,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:33:22,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:33:22,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:33:22,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:33:22,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:33:22,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:33:22,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:33:22,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:33:22,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:33:22,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:33:22,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:33:22,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:33:22,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:33:22,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:33:22,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:33:22,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:33:22,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:33:22,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:33:22,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:33:22,941 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:33:22,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:33:22,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:33:22,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:33:22,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:33:22,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:33:22,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:33:22,942 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:33:22,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:33:22,942 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:33:22,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:33:22,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:33:22,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:33:22,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:33:22,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:33:22,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:33:22,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:33:22,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:33:22,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:33:22,944 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:33:22,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:33:23,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:33:23,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:33:23,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:33:23,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:33:23,228 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:33:23,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2021-05-06 11:33:23,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a137fdf70/8c2b4a5be0a34a88aca7043a1898e4bd/FLAGa9ac4c275 [2021-05-06 11:33:23,756 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:33:23,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2021-05-06 11:33:23,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a137fdf70/8c2b4a5be0a34a88aca7043a1898e4bd/FLAGa9ac4c275 [2021-05-06 11:33:24,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a137fdf70/8c2b4a5be0a34a88aca7043a1898e4bd [2021-05-06 11:33:24,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:33:24,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:33:24,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:33:24,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:33:24,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:33:24,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad68a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24, skipping insertion in model container [2021-05-06 11:33:24,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:33:24,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:33:24,302 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i[893,906] [2021-05-06 11:33:24,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:33:24,317 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:33:24,361 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i[893,906] [2021-05-06 11:33:24,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:33:24,384 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:33:24,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24 WrapperNode [2021-05-06 11:33:24,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:33:24,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:33:24,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:33:24,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:33:24,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (1/1) ... [2021-05-06 11:33:24,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:33:24,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:33:24,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:33:24,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:33:24,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (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 [2021-05-06 11:33:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:33:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:33:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:33:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:33:24,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:33:24,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:33:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:33:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:33:24,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:33:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:33:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:33:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:33:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:33:24,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:33:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:33:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:33:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:33:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:33:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:33:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:33:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:33:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:33:24,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:33:24,736 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:33:24,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:33:24 BoogieIcfgContainer [2021-05-06 11:33:24,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:33:24,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:33:24,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:33:24,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:33:24,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:33:24" (1/3) ... [2021-05-06 11:33:24,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3babb5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:33:24, skipping insertion in model container [2021-05-06 11:33:24,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:33:24" (2/3) ... [2021-05-06 11:33:24,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3babb5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:33:24, skipping insertion in model container [2021-05-06 11:33:24,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:33:24" (3/3) ... [2021-05-06 11:33:24,743 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2021-05-06 11:33:24,748 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:33:24,751 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:33:24,765 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:33:24,786 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:33:24,786 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:33:24,786 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:33:24,786 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:33:24,786 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:33:24,787 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:33:24,787 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:33:24,787 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:33:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:33:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 11:33:24,818 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:24,819 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:24,819 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:24,838 INFO L82 PathProgramCache]: Analyzing trace with hash -390730657, now seen corresponding path program 1 times [2021-05-06 11:33:24,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:24,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469867984] [2021-05-06 11:33:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:24,921 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:25,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:33:25,139 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:25,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469867984] [2021-05-06 11:33:25,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [469867984] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:25,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:25,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:33:25,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831432159] [2021-05-06 11:33:25,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:33:25,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:33:25,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:33:25,159 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:33:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:25,463 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-05-06 11:33:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:33:25,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 11:33:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:25,471 INFO L225 Difference]: With dead ends: 45 [2021-05-06 11:33:25,471 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 11:33:25,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 196.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:33:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 11:33:25,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-06 11:33:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:33:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-05-06 11:33:25,507 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-05-06 11:33:25,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:25,507 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-05-06 11:33:25,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:33:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-05-06 11:33:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-06 11:33:25,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:25,508 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:25,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:33:25,509 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1367367025, now seen corresponding path program 1 times [2021-05-06 11:33:25,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:25,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051722550] [2021-05-06 11:33:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:25,512 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:33:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-06 11:33:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:33:25,604 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:25,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051722550] [2021-05-06 11:33:25,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2051722550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:25,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:25,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 11:33:25,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229554618] [2021-05-06 11:33:25,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 11:33:25,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:25,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 11:33:25,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:33:25,607 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:33:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:25,799 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-05-06 11:33:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:33:25,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-06 11:33:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:25,802 INFO L225 Difference]: With dead ends: 32 [2021-05-06 11:33:25,802 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 11:33:25,803 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 134.6ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-06 11:33:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 11:33:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-05-06 11:33:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:33:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-05-06 11:33:25,813 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 18 [2021-05-06 11:33:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:25,813 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-05-06 11:33:25,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:33:25,813 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-05-06 11:33:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-06 11:33:25,815 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:33:25,815 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:33:25,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:33:25,815 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:33:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:33:25,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1382920975, now seen corresponding path program 1 times [2021-05-06 11:33:25,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:33:25,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811765911] [2021-05-06 11:33:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:33:25,857 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 86.7 percent of original size [2021-05-06 11:33:25,862 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:33:25,878 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:33:25,903 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-06 11:33:25,917 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-06 11:33:25,947 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 86.7 percent of original size 72 [2021-05-06 11:33:25,966 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:33:25,969 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:33:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:33:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:26,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-06 11:33:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:33:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:33:26,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:33:26,392 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:33:26,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811765911] [2021-05-06 11:33:26,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [811765911] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:33:26,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:33:26,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-06 11:33:26,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231971801] [2021-05-06 11:33:26,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-06 11:33:26,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:33:26,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-06 11:33:26,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-05-06 11:33:26,398 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:33:26,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:33:26,699 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-05-06 11:33:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 11:33:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 30 [2021-05-06 11:33:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:33:26,701 INFO L225 Difference]: With dead ends: 29 [2021-05-06 11:33:26,701 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:33:26,701 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 452.0ms TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-05-06 11:33:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:33:26,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:33:26,702 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) [2021-05-06 11:33:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:33:26,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-05-06 11:33:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:33:26,702 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:33:26,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:33:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:33:26,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:33:26,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 11:33:26,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:33:27,211 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 11:33:27,211 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 11:33:27,212 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 11:33:27,212 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:33:27,212 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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-06 11:33:27,212 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:33:27,212 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:33:27,212 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:33:27,212 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:33:27,212 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:33:27,212 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-06 11:33:27,212 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:33:27,213 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:33:27,213 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:33:27,213 INFO L201 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-05-06 11:33:27,213 INFO L194 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: (<= 1 main_~MAXPATHLEN~0) [2021-05-06 11:33:27,213 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 45) the Hoare annotation is: true [2021-05-06 11:33:27,213 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 24 45) the Hoare annotation is: true [2021-05-06 11:33:27,213 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 24 45) the Hoare annotation is: true [2021-05-06 11:33:27,213 INFO L201 CegarLoopUtils]: At program point L44(lines 25 45) the Hoare annotation is: true [2021-05-06 11:33:27,213 INFO L194 CegarLoopUtils]: At program point L42(lines 38 43) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~glob2_pathlim_off~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2021-05-06 11:33:27,213 INFO L194 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~glob2_pathlim_off~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2021-05-06 11:33:27,214 INFO L194 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 main_~glob2_pathlim_off~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2021-05-06 11:33:27,214 INFO L194 CegarLoopUtils]: At program point L38-2(lines 38 43) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (<= 0 main_~glob2_p_off~0)) [2021-05-06 11:33:27,214 INFO L194 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~MAXPATHLEN~0_BEFORE_CALL_1 Int) (v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 Int) (v_main_~glob2_p_off~0_BEFORE_CALL_1 Int)) (or (not (<= v_main_~glob2_p_off~0_BEFORE_CALL_1 v_main_~glob2_pathlim_off~0_BEFORE_CALL_1)) (not (= (ite (<= 0 v_main_~glob2_p_off~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (<= v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 v_main_~MAXPATHLEN~0_BEFORE_CALL_1)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-05-06 11:33:27,214 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-06 11:33:27,214 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~MAXPATHLEN~0_BEFORE_CALL_1 Int) (v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 Int) (v_main_~glob2_p_off~0_BEFORE_CALL_1 Int)) (or (not (<= v_main_~glob2_p_off~0_BEFORE_CALL_1 v_main_~glob2_pathlim_off~0_BEFORE_CALL_1)) (not (= (ite (<= 0 v_main_~glob2_p_off~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (<= v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 v_main_~MAXPATHLEN~0_BEFORE_CALL_1)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-05-06 11:33:27,214 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~MAXPATHLEN~0_BEFORE_CALL_1 Int) (v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 Int) (v_main_~glob2_p_off~0_BEFORE_CALL_1 Int)) (or (not (<= v_main_~glob2_p_off~0_BEFORE_CALL_1 v_main_~glob2_pathlim_off~0_BEFORE_CALL_1)) (not (= (ite (<= 0 v_main_~glob2_p_off~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (<= v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 v_main_~MAXPATHLEN~0_BEFORE_CALL_1))))) [2021-05-06 11:33:27,214 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~MAXPATHLEN~0_BEFORE_CALL_1 Int) (v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 Int) (v_main_~glob2_p_off~0_BEFORE_CALL_1 Int)) (or (not (<= v_main_~glob2_p_off~0_BEFORE_CALL_1 v_main_~glob2_pathlim_off~0_BEFORE_CALL_1)) (not (= (ite (<= 0 v_main_~glob2_p_off~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (<= v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 v_main_~MAXPATHLEN~0_BEFORE_CALL_1))))) [2021-05-06 11:33:27,215 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (forall ((v_main_~MAXPATHLEN~0_BEFORE_CALL_1 Int) (v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 Int) (v_main_~glob2_p_off~0_BEFORE_CALL_1 Int)) (or (not (<= v_main_~glob2_p_off~0_BEFORE_CALL_1 v_main_~glob2_pathlim_off~0_BEFORE_CALL_1)) (not (= (ite (<= 0 v_main_~glob2_p_off~0_BEFORE_CALL_1) 1 0) |__VERIFIER_assert_#in~cond|)) (not (<= v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 v_main_~MAXPATHLEN~0_BEFORE_CALL_1)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-05-06 11:33:27,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~MAXPATHLEN~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:33:27 BoogieIcfgContainer [2021-05-06 11:33:27,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:33:27,233 INFO L168 Benchmark]: Toolchain (without parser) took 3082.97 ms. Allocated memory was 186.6 MB in the beginning and 242.2 MB in the end (delta: 55.6 MB). Free memory was 152.0 MB in the beginning and 143.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:33:27,233 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 186.6 MB. Free memory is still 168.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:33:27,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.71 ms. Allocated memory is still 186.6 MB. Free memory was 151.8 MB in the beginning and 170.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:33:27,235 INFO L168 Benchmark]: Boogie Preprocessor took 34.24 ms. Allocated memory is still 186.6 MB. Free memory was 170.1 MB in the beginning and 168.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:33:27,237 INFO L168 Benchmark]: RCFGBuilder took 317.69 ms. Allocated memory is still 186.6 MB. Free memory was 168.6 MB in the beginning and 154.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:33:27,239 INFO L168 Benchmark]: TraceAbstraction took 2492.56 ms. Allocated memory was 186.6 MB in the beginning and 242.2 MB in the end (delta: 55.6 MB). Free memory was 153.9 MB in the beginning and 143.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:33:27,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 186.6 MB. Free memory is still 168.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 219.71 ms. Allocated memory is still 186.6 MB. Free memory was 151.8 MB in the beginning and 170.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.24 ms. Allocated memory is still 186.6 MB. Free memory was 170.1 MB in the beginning and 168.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 317.69 ms. Allocated memory is still 186.6 MB. Free memory was 168.6 MB in the beginning and 154.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2492.56 ms. Allocated memory was 186.6 MB in the beginning and 242.2 MB in the end (delta: 55.6 MB). Free memory was 153.9 MB in the beginning and 143.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~MAXPATHLEN~0_BEFORE_CALL_1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1919.4ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 26.3ms, AutomataDifference: 832.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 507.5ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 44 SDtfs, 82 SDslu, 92 SDs, 0 SdLazy, 190 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 204.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 782.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 23 LocationsWithAnnotation, 53 PreInvPairs, 76 NumberOfFragments, 218 HoareAnnotationTreeSize, 53 FomulaSimplifications, 253 FormulaSimplificationTreeSizeReduction, 147.4ms HoareSimplificationTime, 23 FomulaSimplificationsInter, 1098 FormulaSimplificationTreeSizeReductionInter, 338.1ms 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: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && glob2_p_off <= MAXPATHLEN + 1) && 0 <= glob2_p_off - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert [2021-05-06 11:33:27,248 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,248 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,248 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,248 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,248 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~MAXPATHLEN~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,249 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,249 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,249 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_p_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,249 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~glob2_pathlim_off~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:33:27,249 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~MAXPATHLEN~0_BEFORE_CALL_1,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: (\old(cond) == 0 || (forall v_main_~MAXPATHLEN~0_BEFORE_CALL_1 : int, v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 : int, v_main_~glob2_p_off~0_BEFORE_CALL_1 : int :: (!(v_main_~glob2_p_off~0_BEFORE_CALL_1 <= v_main_~glob2_pathlim_off~0_BEFORE_CALL_1) || !((if 0 <= v_main_~glob2_p_off~0_BEFORE_CALL_1 then 1 else 0) == \old(cond))) || !(v_main_~glob2_pathlim_off~0_BEFORE_CALL_1 <= v_main_~MAXPATHLEN~0_BEFORE_CALL_1))) || \old(cond) == cond RESULT: Ultimate proved your program to be correct! Received shutdown request...