/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/loop-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:34:39,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:34:39,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:34:39,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 12:34:39,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:34:39,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:34:39,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:34:39,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:34:39,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:34:39,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:34:39,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:34:39,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:34:39,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:34:39,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:34:39,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:34:39,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:34:39,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 12:34:39,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:34:39,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:34:39,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:34:39,673 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 [2021-05-02 12:34:39,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:34:39,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:34:39,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:34:39,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:34:39,707 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:34:39,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:34:39,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:34:39,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:34:39,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:34:39,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:34:39,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:34:39,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:34:39,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:34:39,708 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:34:39,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:34:39,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:34:39,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:34:39,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:34:39,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:34:39,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:34:39,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:34:39,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:34:39,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:34:39,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:34:39,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:34:39,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:34:39,983 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:34:39,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2021-05-02 12:34:40,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf17c770/052fa472701749ebb5d0f5200a6219ec/FLAGcc0641a4e [2021-05-02 12:34:40,423 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:34:40,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2021-05-02 12:34:40,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf17c770/052fa472701749ebb5d0f5200a6219ec/FLAGcc0641a4e [2021-05-02 12:34:40,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bf17c770/052fa472701749ebb5d0f5200a6219ec [2021-05-02 12:34:40,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:34:40,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:34:40,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:34:40,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:34:40,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:34:40,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391dd194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40, skipping insertion in model container [2021-05-02 12:34:40,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:34:40,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:34:40,579 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-lit/hhk2008.i[895,908] [2021-05-02 12:34:40,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:34:40,595 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:34:40,634 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-lit/hhk2008.i[895,908] [2021-05-02 12:34:40,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:34:40,650 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:34:40,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40 WrapperNode [2021-05-02 12:34:40,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:34:40,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:34:40,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:34:40,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:34:40,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (1/1) ... [2021-05-02 12:34:40,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:34:40,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:34:40,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:34:40,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:34:40,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (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 [2021-05-02 12:34:40,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:34:40,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:34:40,749 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:34:40,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:34:40,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:34:40,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:34:40,750 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:34:40,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:34:40,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 12:34:40,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 12:34:40,751 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:34:40,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:34:40,751 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:34:40,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:34:40,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:34:40,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:34:40,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:34:40,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:34:40,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:34:40,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:34:40,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:34:40,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:34:40,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:34:40,923 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:34:40,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:34:40 BoogieIcfgContainer [2021-05-02 12:34:40,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:34:40,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:34:40,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:34:40,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:34:40,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:34:40" (1/3) ... [2021-05-02 12:34:40,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f85a872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:34:40, skipping insertion in model container [2021-05-02 12:34:40,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:34:40" (2/3) ... [2021-05-02 12:34:40,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f85a872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:34:40, skipping insertion in model container [2021-05-02 12:34:40,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:34:40" (3/3) ... [2021-05-02 12:34:40,928 INFO L111 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2021-05-02 12:34:40,931 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:34:40,934 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:34:40,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:34:40,956 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:34:40,956 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:34:40,956 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:34:40,956 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:34:40,956 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:34:40,956 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:34:40,956 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:34:40,956 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:34:40,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:34:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 12:34:40,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:40,968 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:40,969 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:40,976 INFO L82 PathProgramCache]: Analyzing trace with hash 499112448, now seen corresponding path program 1 times [2021-05-02 12:34:40,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:40,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788772121] [2021-05-02 12:34:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:41,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:41,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:41,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788772121] [2021-05-02 12:34:41,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788772121] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:34:41,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:34:41,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 12:34:41,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517951184] [2021-05-02 12:34:41,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 12:34:41,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:41,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 12:34:41,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:34:41,168 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2021-05-02 12:34:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:41,219 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-02 12:34:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 12:34:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2021-05-02 12:34:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:41,224 INFO L225 Difference]: With dead ends: 33 [2021-05-02 12:34:41,225 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 12:34:41,226 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:34:41,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 12:34:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 12:34:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 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) [2021-05-02 12:34:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 12:34:41,248 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-05-02 12:34:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:41,248 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 12:34:41,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2021-05-02 12:34:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 12:34:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 12:34:41,249 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:41,249 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:41,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:34:41,249 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash 495418364, now seen corresponding path program 1 times [2021-05-02 12:34:41,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:41,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500086669] [2021-05-02 12:34:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:41,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:41,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500086669] [2021-05-02 12:34:41,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500086669] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:34:41,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:34:41,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 12:34:41,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755757668] [2021-05-02 12:34:41,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 12:34:41,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:41,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 12:34:41,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:34:41,380 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2021-05-02 12:34:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:41,522 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 12:34:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:34:41,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2021-05-02 12:34:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:41,523 INFO L225 Difference]: With dead ends: 20 [2021-05-02 12:34:41,523 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 12:34:41,524 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:34:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 12:34:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 12:34:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 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) [2021-05-02 12:34:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 12:34:41,535 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-02 12:34:41,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:41,535 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 12:34:41,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2021-05-02 12:34:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 12:34:41,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 12:34:41,536 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:41,536 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:41,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:34:41,537 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:41,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:41,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1787404818, now seen corresponding path program 1 times [2021-05-02 12:34:41,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:41,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866927899] [2021-05-02 12:34:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:41,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:41,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866927899] [2021-05-02 12:34:41,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866927899] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:41,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197804869] [2021-05-02 12:34:41,654 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 [2021-05-02 12:34:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:41,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 12:34:41,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:41,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:41,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:41,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:41,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197804869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:41,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:41,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-05-02 12:34:41,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990549843] [2021-05-02 12:34:41,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 12:34:41,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:41,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 12:34:41,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-05-02 12:34:41,914 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:42,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:42,205 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-05-02 12:34:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:34:42,206 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 12:34:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:42,206 INFO L225 Difference]: With dead ends: 17 [2021-05-02 12:34:42,206 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 12:34:42,207 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 347.3ms TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:34:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 12:34:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 12:34:42,207 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) [2021-05-02 12:34:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 12:34:42,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-02 12:34:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:42,208 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 12:34:42,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 12:34:42,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 12:34:42,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:34:42,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 12:34:42,535 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 12:34:42,535 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 12:34:42,535 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 12:34:42,535 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:34:42,536 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)|)) [2021-05-02 12:34:42,536 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:34:42,536 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:34:42,536 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 12:34:42,536 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 12:34:42,536 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:34:42,536 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-02 12:34:42,536 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:34:42,536 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:34:42,536 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:34:42,537 INFO L194 CegarLoopUtils]: At program point L32-2(lines 32 35) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (< main_~res~0 (+ main_~a~0 main_~b~0 1)) (<= .cse1 .cse0))) [2021-05-02 12:34:42,537 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-05-02 12:34:42,537 INFO L198 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-05-02 12:34:42,537 INFO L194 CegarLoopUtils]: At program point L32-3(lines 32 35) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~res~0) (< main_~res~0 (+ main_~a~0 main_~b~0 1))) [2021-05-02 12:34:42,537 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-05-02 12:34:42,537 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2021-05-02 12:34:42,537 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 24 38) no Hoare annotation was computed. [2021-05-02 12:34:42,538 INFO L198 CegarLoopUtils]: For program point L36(line 36) no Hoare annotation was computed. [2021-05-02 12:34:42,538 INFO L198 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:34:42,538 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-02 12:34:42,538 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:34:42,538 INFO L198 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-05-02 12:34:42,538 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-05-02 12:34:42,538 INFO L198 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-05-02 12:34:42,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 12:34:42 BoogieIcfgContainer [2021-05-02 12:34:42,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 12:34:42,554 INFO L168 Benchmark]: Toolchain (without parser) took 2107.68 ms. Allocated memory is still 189.8 MB. Free memory was 153.7 MB in the beginning and 72.2 MB in the end (delta: 81.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:42,554 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 189.8 MB. Free memory is still 170.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 12:34:42,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.52 ms. Allocated memory is still 189.8 MB. Free memory was 153.5 MB in the beginning and 172.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:42,557 INFO L168 Benchmark]: Boogie Preprocessor took 32.34 ms. Allocated memory is still 189.8 MB. Free memory was 172.3 MB in the beginning and 170.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:42,558 INFO L168 Benchmark]: RCFGBuilder took 239.53 ms. Allocated memory is still 189.8 MB. Free memory was 170.7 MB in the beginning and 156.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:42,559 INFO L168 Benchmark]: TraceAbstraction took 1627.99 ms. Allocated memory is still 189.8 MB. Free memory was 155.5 MB in the beginning and 72.2 MB in the end (delta: 83.4 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB. [2021-05-02 12:34:42,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 189.8 MB. Free memory is still 170.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 203.52 ms. Allocated memory is still 189.8 MB. Free memory was 153.5 MB in the beginning and 172.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.34 ms. Allocated memory is still 189.8 MB. Free memory was 172.3 MB in the beginning and 170.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 239.53 ms. Allocated memory is still 189.8 MB. Free memory was 170.7 MB in the beginning and 156.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1627.99 ms. Allocated memory is still 189.8 MB. Free memory was 155.5 MB in the beginning and 72.2 MB in the end (delta: 83.4 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB. * 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, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1469.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 5.8ms, AutomataDifference: 505.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 110.4ms, InitialAbstractionConstructionTime: 6.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 38 SDslu, 59 SDs, 0 SdLazy, 100 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 498.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 62 HoareAnnotationTreeSize, 10 FomulaSimplifications, 56 FormulaSimplificationTreeSizeReduction, 30.4ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 301 FormulaSimplificationTreeSizeReductionInter, 70.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 22.4ms SsaConstructionTime, 68.3ms SatisfiabilityAnalysisTime, 506.9ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 2 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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: 32]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res < a + b + 1) && res + cnt <= a + b RESULT: Ultimate proved your program to be correct! Received shutdown request...