/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-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:26:08,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:26:08,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:26:08,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:26:08,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 23:26:08,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 23:26:08,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 23:26:08,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 23:26:08,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 23:26:08,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 23:26:08,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 23:26:08,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 23:26:08,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 23:26:08,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 23:26:08,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 23:26:08,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 23:26:08,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 23:26:08,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:26:08,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:26:08,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:26:08,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:26:08,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:26:08,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:26:08,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:26:08,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:26:08,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:26:08,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:26:08,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:26:08,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:26:08,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:26:08,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:26:08,677 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:26:08,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:26:08,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:26:08,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:26:08,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:26:08,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:26:08,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:26:08,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:26:08,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:26:08,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:26:08,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:26:08,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:26:08,678 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:26:08,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:26:08,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:26:08,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:26:08,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:26:08,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:26:08,994 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:26:08,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2021-05-02 23:26:09,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66954e9b6/b6e06e31cbc2465a96e00c446c01eb7f/FLAG765e58f86 [2021-05-02 23:26:09,391 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:26:09,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2021-05-02 23:26:09,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66954e9b6/b6e06e31cbc2465a96e00c446c01eb7f/FLAG765e58f86 [2021-05-02 23:26:09,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66954e9b6/b6e06e31cbc2465a96e00c446c01eb7f [2021-05-02 23:26:09,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:26:09,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:26:09,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:26:09,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:26:09,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:26:09,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576f5e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09, skipping insertion in model container [2021-05-02 23:26:09,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:26:09,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:26:09,556 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-acceleration/multivar_1-1.c[374,387] [2021-05-02 23:26:09,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:26:09,573 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:26:09,603 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-acceleration/multivar_1-1.c[374,387] [2021-05-02 23:26:09,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:26:09,636 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:26:09,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09 WrapperNode [2021-05-02 23:26:09,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:26:09,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:26:09,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:26:09,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:26:09,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (1/1) ... [2021-05-02 23:26:09,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:26:09,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:26:09,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:26:09,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:26:09,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (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 23:26:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:26:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:26:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:26:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:26:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:26:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:26:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:26:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:26:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:26:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 23:26:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:26:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:26:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:26:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:26:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:26:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:26:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:26:09,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:26:09,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:26:09,971 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:26:09,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:26:09 BoogieIcfgContainer [2021-05-02 23:26:09,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:26:09,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:26:09,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:26:09,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:26:09,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:26:09" (1/3) ... [2021-05-02 23:26:09,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11180284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:26:09, skipping insertion in model container [2021-05-02 23:26:09,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:26:09" (2/3) ... [2021-05-02 23:26:09,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11180284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:26:09, skipping insertion in model container [2021-05-02 23:26:09,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:26:09" (3/3) ... [2021-05-02 23:26:09,979 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2021-05-02 23:26:09,983 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:26:09,986 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:26:09,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:26:10,014 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:26:10,014 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:26:10,014 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:26:10,015 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:26:10,015 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:26:10,015 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:26:10,015 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:26:10,015 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:26:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 23:26:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:26:10,031 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:26:10,031 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:26:10,032 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:26:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:26:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2021-05-02 23:26:10,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:26:10,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80357900] [2021-05-02 23:26:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:26:10,081 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:26:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:26:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:26:10,402 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 23:26:10,404 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:26:10,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80357900] [2021-05-02 23:26:10,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [80357900] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:26:10,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:26:10,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:26:10,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863905017] [2021-05-02 23:26:10,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:26:10,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:26:10,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:26:10,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:26:10,420 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 23:26:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:26:10,683 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-05-02 23:26:10,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:26:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2021-05-02 23:26:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:26:10,689 INFO L225 Difference]: With dead ends: 27 [2021-05-02 23:26:10,689 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 23:26:10,691 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 254.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:26:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 23:26:10,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 23:26:10,707 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 23:26:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 23:26:10,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-05-02 23:26:10,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:26:10,708 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 23:26:10,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 23:26:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 23:26:10,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 23:26:10,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:26:10,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 23:26:10,983 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 23:26:10,983 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 23:26:10,983 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 23:26:10,983 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:26:10,984 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 23:26:10,984 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:26:10,984 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:26:10,984 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 23:26:10,984 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 23:26:10,984 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:26:10,984 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2021-05-02 23:26:10,984 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 13 23) the Hoare annotation is: (= main_~y~0 main_~x~0) [2021-05-02 23:26:10,984 INFO L194 CegarLoopUtils]: At program point L17-2(lines 17 20) the Hoare annotation is: (= main_~y~0 main_~x~0) [2021-05-02 23:26:10,984 INFO L194 CegarLoopUtils]: At program point L17-3(lines 17 20) the Hoare annotation is: (= main_~y~0 main_~x~0) [2021-05-02 23:26:10,984 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 13 23) the Hoare annotation is: (= main_~y~0 main_~x~0) [2021-05-02 23:26:10,984 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2021-05-02 23:26:10,985 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:26:10,985 INFO L194 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:26:10,985 INFO L194 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:26:10,985 INFO L194 CegarLoopUtils]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:26:10,985 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:26:11,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:26:11 BoogieIcfgContainer [2021-05-02 23:26:11,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:26:11,018 INFO L168 Benchmark]: Toolchain (without parser) took 1591.75 ms. Allocated memory is still 200.3 MB. Free memory was 164.5 MB in the beginning and 129.0 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:26:11,019 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 200.3 MB. Free memory is still 180.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:26:11,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.44 ms. Allocated memory is still 200.3 MB. Free memory was 164.3 MB in the beginning and 182.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:26:11,020 INFO L168 Benchmark]: Boogie Preprocessor took 43.82 ms. Allocated memory is still 200.3 MB. Free memory was 182.9 MB in the beginning and 181.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 23:26:11,021 INFO L168 Benchmark]: RCFGBuilder took 289.13 ms. Allocated memory is still 200.3 MB. Free memory was 181.2 MB in the beginning and 168.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:26:11,021 INFO L168 Benchmark]: TraceAbstraction took 1040.54 ms. Allocated memory is still 200.3 MB. Free memory was 167.9 MB in the beginning and 129.0 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. [2021-05-02 23:26:11,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 200.3 MB. Free memory is still 180.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 209.44 ms. Allocated memory is still 200.3 MB. Free memory was 164.3 MB in the beginning and 182.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.82 ms. Allocated memory is still 200.3 MB. Free memory was 182.9 MB in the beginning and 181.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 289.13 ms. Allocated memory is still 200.3 MB. Free memory was 181.2 MB in the beginning and 168.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1040.54 ms. Allocated memory is still 200.3 MB. Free memory was 167.9 MB in the beginning and 129.0 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 697.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.3ms, AutomataDifference: 281.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 273.2ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 12 SDslu, 23 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 254.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 18 LocationsWithAnnotation, 24 PreInvPairs, 31 NumberOfFragments, 81 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 60.2ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 297 FormulaSimplificationTreeSizeReductionInter, 198.9ms 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: 17]: Loop Invariant Derived loop invariant: y == x - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: y == x - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...