/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-invariants/even.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:26:22,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:26:22,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:26:22,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 00:26:22,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:26:22,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:26:22,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:26:22,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:26:22,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:26:22,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:26:22,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:26:22,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:26:22,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:26:22,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:26:22,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:26:22,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:26:22,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:26:22,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:26:22,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:26:22,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:26:22,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:26:22,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:26:22,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:26:22,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:26:22,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:26:22,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:26:22,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:26:22,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:26:22,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:26:22,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:26:22,159 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:26:22,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:26:22,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:26:22,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:26:22,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:26:22,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:26:22,490 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:26:22,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even.c [2021-05-03 00:26:22,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8761349/822822fa65654ee3b0c0e0456d058821/FLAG97291b276 [2021-05-03 00:26:22,954 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:26:22,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c [2021-05-03 00:26:22,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8761349/822822fa65654ee3b0c0e0456d058821/FLAG97291b276 [2021-05-03 00:26:22,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8761349/822822fa65654ee3b0c0e0456d058821 [2021-05-03 00:26:22,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:26:22,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:26:22,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:26:22,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:26:22,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:26:22,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:26:22" (1/1) ... [2021-05-03 00:26:22,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560bf5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:22, skipping insertion in model container [2021-05-03 00:26:22,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:26:22" (1/1) ... [2021-05-03 00:26:23,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:26:23,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:26:23,162 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-invariants/even.c[351,364] [2021-05-03 00:26:23,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:26:23,186 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:26:23,234 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-invariants/even.c[351,364] [2021-05-03 00:26:23,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:26:23,250 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:26:23,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23 WrapperNode [2021-05-03 00:26:23,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:26:23,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:26:23,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:26:23,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:26:23,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (1/1) ... [2021-05-03 00:26:23,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (1/1) ... [2021-05-03 00:26:23,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (1/1) ... [2021-05-03 00:26:23,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (1/1) ... [2021-05-03 00:26:23,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (1/1) ... [2021-05-03 00:26:23,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (1/1) ... [2021-05-03 00:26:23,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (1/1) ... [2021-05-03 00:26:23,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:26:23,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:26:23,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:26:23,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:26:23,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (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 [2021-05-03 00:26:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:26:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:26:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:26:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-03 00:26:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-03 00:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-03 00:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-03 00:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:26:23,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:26:23,568 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-03 00:26:23,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:26:23 BoogieIcfgContainer [2021-05-03 00:26:23,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:26:23,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:26:23,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:26:23,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:26:23,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:26:22" (1/3) ... [2021-05-03 00:26:23,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369a9be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:26:23, skipping insertion in model container [2021-05-03 00:26:23,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:26:23" (2/3) ... [2021-05-03 00:26:23,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369a9be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:26:23, skipping insertion in model container [2021-05-03 00:26:23,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:26:23" (3/3) ... [2021-05-03 00:26:23,576 INFO L111 eAbstractionObserver]: Analyzing ICFG even.c [2021-05-03 00:26:23,597 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:26:23,600 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:26:23,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:26:23,666 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:26:23,667 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:26:23,667 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:26:23,667 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:26:23,667 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:26:23,667 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:26:23,667 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:26:23,667 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:26:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-05-03 00:26:23,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-03 00:26:23,691 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:26:23,692 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:26:23,692 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:26:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:26:23,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2021-05-03 00:26:23,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:26:23,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061245551] [2021-05-03 00:26:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:26:23,763 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:26:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:23,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:26:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:26:23,942 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:26:23,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061245551] [2021-05-03 00:26:23,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2061245551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:26:23,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:26:23,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 00:26:23,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364133617] [2021-05-03 00:26:23,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 00:26:23,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:26:23,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 00:26:23,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:26:23,969 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 2.3333333333333335) internal successors, (7), 2 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) [2021-05-03 00:26:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:26:24,048 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-03 00:26:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 00:26:24,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2021-05-03 00:26:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:26:24,056 INFO L225 Difference]: With dead ends: 32 [2021-05-03 00:26:24,056 INFO L226 Difference]: Without dead ends: 13 [2021-05-03 00:26:24,060 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:26:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-03 00:26:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-03 00:26:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-05-03 00:26:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-03 00:26:24,095 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-03 00:26:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:26:24,096 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-03 00:26:24,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2021-05-03 00:26:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-03 00:26:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-03 00:26:24,099 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:26:24,099 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:26:24,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:26:24,100 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:26:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:26:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2021-05-03 00:26:24,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:26:24,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645126013] [2021-05-03 00:26:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:26:24,112 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:26:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:26:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:26:24,238 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:26:24,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645126013] [2021-05-03 00:26:24,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1645126013] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:26:24,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:26:24,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 00:26:24,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890965986] [2021-05-03 00:26:24,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 00:26:24,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:26:24,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 00:26:24,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-03 00:26:24,244 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-05-03 00:26:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:26:24,388 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-03 00:26:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 00:26:24,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2021-05-03 00:26:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:26:24,391 INFO L225 Difference]: With dead ends: 20 [2021-05-03 00:26:24,391 INFO L226 Difference]: Without dead ends: 15 [2021-05-03 00:26:24,393 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 00:26:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-03 00:26:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-03 00:26:24,404 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) [2021-05-03 00:26:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-03 00:26:24,406 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-05-03 00:26:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:26:24,406 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-03 00:26:24,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-05-03 00:26:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-03 00:26:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 00:26:24,407 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:26:24,407 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:26:24,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 00:26:24,408 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:26:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:26:24,408 INFO L82 PathProgramCache]: Analyzing trace with hash 615626395, now seen corresponding path program 1 times [2021-05-03 00:26:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:26:24,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990678826] [2021-05-03 00:26:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:26:24,449 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_7| 2147483648)) (<= |v_main_#t~nondet7_7| 2147483647) (not (= |v_main_#t~nondet7_7| 0))) InVars {main_#t~nondet7=|v_main_#t~nondet7_7|} OutVars{main_#t~nondet7=|v_main_#t~nondet7_7|} AuxVars[] AssignedVars[] [2021-05-03 00:26:24,474 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.3 percent of original size [2021-05-03 00:26:24,519 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:24,523 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:26:24,538 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:26:24,541 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-03 00:26:24,575 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.3 percent of original size 83 [2021-05-03 00:26:24,611 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:26:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:24,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:26:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:26:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:26:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:26:24,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:26:24,938 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:26:24,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990678826] [2021-05-03 00:26:24,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1990678826] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:26:24,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:26:24,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 00:26:24,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306229198] [2021-05-03 00:26:24,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 00:26:24,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:26:24,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 00:26:24,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-03 00:26:24,946 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-05-03 00:26:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:26:25,152 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-05-03 00:26:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 00:26:25,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 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 14 [2021-05-03 00:26:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:26:25,153 INFO L225 Difference]: With dead ends: 18 [2021-05-03 00:26:25,153 INFO L226 Difference]: Without dead ends: 0 [2021-05-03 00:26:25,154 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 286.6ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-05-03 00:26:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-03 00:26:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-03 00:26:25,154 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) [2021-05-03 00:26:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-03 00:26:25,155 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-03 00:26:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:26:25,155 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-03 00:26:25,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-05-03 00:26:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-03 00:26:25,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-03 00:26:25,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 00:26:25,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-03 00:26:25,332 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-03 00:26:25,332 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-03 00:26:25,332 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-03 00:26:25,332 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-03 00:26:25,339 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|)) [2021-05-03 00:26:25,339 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2021-05-03 00:26:25,340 INFO L194 CegarLoopUtils]: At program point L13-1(lines 13 15) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-05-03 00:26:25,340 INFO L194 CegarLoopUtils]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-05-03 00:26:25,340 INFO L194 CegarLoopUtils]: At program point L13-4(lines 13 15) the Hoare annotation is: (<= main_~x~0 (* 2 (div main_~x~0 2))) [2021-05-03 00:26:25,340 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-03 00:26:25,341 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-05-03 00:26:25,341 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-03 00:26:25,341 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-03 00:26:25,341 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-05-03 00:26:25,341 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-03 00:26:25,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 12:26:25 BoogieIcfgContainer [2021-05-03 00:26:25,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 00:26:25,355 INFO L168 Benchmark]: Toolchain (without parser) took 2368.45 ms. Allocated memory is still 181.4 MB. Free memory was 146.0 MB in the beginning and 163.1 MB in the end (delta: -17.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 8.0 GB. [2021-05-03 00:26:25,355 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 181.4 MB. Free memory is still 162.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:26:25,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.07 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 164.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2021-05-03 00:26:25,356 INFO L168 Benchmark]: Boogie Preprocessor took 26.85 ms. Allocated memory is still 181.4 MB. Free memory was 164.2 MB in the beginning and 163.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-03 00:26:25,356 INFO L168 Benchmark]: RCFGBuilder took 288.79 ms. Allocated memory is still 181.4 MB. Free memory was 162.6 MB in the beginning and 149.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-03 00:26:25,356 INFO L168 Benchmark]: TraceAbstraction took 1783.52 ms. Allocated memory is still 181.4 MB. Free memory was 148.5 MB in the beginning and 163.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 8.0 GB. [2021-05-03 00:26:25,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 181.4 MB. Free memory is still 162.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.07 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 164.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.85 ms. Allocated memory is still 181.4 MB. Free memory was 164.2 MB in the beginning and 163.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 288.79 ms. Allocated memory is still 181.4 MB. Free memory was 162.6 MB in the beginning and 149.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1783.52 ms. Allocated memory is still 181.4 MB. Free memory was 148.5 MB in the beginning and 163.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1491.6ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 15.0ms, AutomataDifference: 470.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 175.7ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 35 SDslu, 35 SDs, 0 SdLazy, 63 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 426.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 20 LocationsWithAnnotation, 38 PreInvPairs, 56 NumberOfFragments, 79 HoareAnnotationTreeSize, 38 FomulaSimplifications, 49 FormulaSimplificationTreeSizeReduction, 55.8ms HoareSimplificationTime, 20 FomulaSimplificationsInter, 569 FormulaSimplificationTreeSizeReductionInter, 108.2ms 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: 13]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...