/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/functions_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:24:37,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:24:37,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:24:37,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:24:37,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:24:37,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:24:37,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:24:37,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:24:37,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:24:37,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:24:37,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:24:37,391 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:24:37,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:24:37,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:24:37,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:24:37,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:24:37,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:24:37,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:24:37,392 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:24:37,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:24:37,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:24:37,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:24:37,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:24:37,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:24:37,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:24:37,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:24:37,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:24:37,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:24:37,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:24:37,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:24:37,394 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:24:37,394 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:24:37,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:24:37,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:24:37,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:24:37,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:24:37,693 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:24:37,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-1.c [2021-05-06 11:24:37,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9db57c21/4bf717d7574d43ae8ba12359d10b7f23/FLAGd91aa1fee [2021-05-06 11:24:38,089 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:24:38,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-1.c [2021-05-06 11:24:38,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9db57c21/4bf717d7574d43ae8ba12359d10b7f23/FLAGd91aa1fee [2021-05-06 11:24:38,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9db57c21/4bf717d7574d43ae8ba12359d10b7f23 [2021-05-06 11:24:38,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:24:38,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:24:38,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:24:38,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:24:38,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:24:38,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52374403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38, skipping insertion in model container [2021-05-06 11:24:38,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:24:38,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:24:38,260 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/functions_1-1.c[325,338] [2021-05-06 11:24:38,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:24:38,274 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:24:38,283 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/functions_1-1.c[325,338] [2021-05-06 11:24:38,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:24:38,334 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:24:38,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38 WrapperNode [2021-05-06 11:24:38,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:24:38,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:24:38,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:24:38,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:24:38,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... [2021-05-06 11:24:38,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:24:38,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:24:38,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:24:38,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:24:38,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:24:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:24:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:24:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:24:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:24:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-05-06 11:24:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:24:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:24:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:24:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:24:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:24:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:24:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-05-06 11:24:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:24:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:24:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:24:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:24:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:24:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:24:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:24:38,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:24:38,645 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:24:38,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:24:38 BoogieIcfgContainer [2021-05-06 11:24:38,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:24:38,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:24:38,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:24:38,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:24:38,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:24:38" (1/3) ... [2021-05-06 11:24:38,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff7e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:24:38, skipping insertion in model container [2021-05-06 11:24:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:24:38" (2/3) ... [2021-05-06 11:24:38,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff7e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:24:38, skipping insertion in model container [2021-05-06 11:24:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:24:38" (3/3) ... [2021-05-06 11:24:38,652 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-1.c [2021-05-06 11:24:38,657 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:24:38,661 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:24:38,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:24:38,714 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:24:38,714 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:24:38,714 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:24:38,714 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:24:38,714 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:24:38,715 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:24:38,715 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:24:38,715 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:24:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 11:24:38,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:24:38,742 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:24:38,742 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:24:38,743 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:24:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:24:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1649640916, now seen corresponding path program 1 times [2021-05-06 11:24:38,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:24:38,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492954594] [2021-05-06 11:24:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:24:38,811 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:24:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:24:38,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:24:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:24:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:24:38,990 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:24:38,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492954594] [2021-05-06 11:24:38,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [492954594] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:24:38,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:24:38,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:24:38,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9339937] [2021-05-06 11:24:38,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:24:38,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:24:39,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:24:39,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:24:39,006 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 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) [2021-05-06 11:24:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:24:39,072 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-06 11:24:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:24:39,073 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 [2021-05-06 11:24:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:24:39,077 INFO L225 Difference]: With dead ends: 34 [2021-05-06 11:24:39,077 INFO L226 Difference]: Without dead ends: 17 [2021-05-06 11:24:39,080 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:24:39,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-06 11:24:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-06 11:24:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:24:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-06 11:24:39,115 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-05-06 11:24:39,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:24:39,115 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-06 11:24:39,115 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) [2021-05-06 11:24:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-06 11:24:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:24:39,116 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:24:39,116 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:24:39,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:24:39,117 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:24:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:24:39,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1655182042, now seen corresponding path program 1 times [2021-05-06 11:24:39,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:24:39,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630823226] [2021-05-06 11:24:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:24:39,123 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:24:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:24:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:24:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:24:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:24:39,255 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:24:39,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630823226] [2021-05-06 11:24:39,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1630823226] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:24:39,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:24:39,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:24:39,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203109274] [2021-05-06 11:24:39,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:24:39,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:24:39,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:24:39,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:24:39,259 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2021-05-06 11:24:39,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:24:39,350 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-05-06 11:24:39,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:24:39,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 [2021-05-06 11:24:39,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:24:39,353 INFO L225 Difference]: With dead ends: 25 [2021-05-06 11:24:39,353 INFO L226 Difference]: Without dead ends: 20 [2021-05-06 11:24:39,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:24:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-06 11:24:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-05-06 11:24:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:24:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-06 11:24:39,370 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-05-06 11:24:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:24:39,371 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-06 11:24:39,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2021-05-06 11:24:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-06 11:24:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 11:24:39,372 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:24:39,372 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:24:39,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:24:39,373 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:24:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:24:39,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1503524740, now seen corresponding path program 1 times [2021-05-06 11:24:39,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:24:39,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808241433] [2021-05-06 11:24:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:24:39,429 WARN L240 tifierPushTermWalker]: treesize reduction 3, result has 94.5 percent of original size [2021-05-06 11:24:39,432 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:24:39,541 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-06 11:24:39,568 WARN L245 tifierPushTermWalker]: treesize reduction 3, result has 94.5 percent of original size 52 [2021-05-06 11:24:39,614 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:24:39,617 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:24:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:24:39,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:24:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:24:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:24:39,999 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:24:39,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808241433] [2021-05-06 11:24:39,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1808241433] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:24:39,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:24:40,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-06 11:24:40,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450946629] [2021-05-06 11:24:40,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 11:24:40,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:24:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 11:24:40,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-05-06 11:24:40,001 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:24:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:24:40,572 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 11:24:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 11:24:40,573 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-05-06 11:24:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:24:40,574 INFO L225 Difference]: With dead ends: 20 [2021-05-06 11:24:40,574 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:24:40,575 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 716.0ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-05-06 11:24:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:24:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:24:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 11:24:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:24:40,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-06 11:24:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:24:40,576 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:24:40,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:24:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:24:40,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:24:40,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:24:40,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:24:41,060 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2021-05-06 11:24:41,133 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-06 11:24:41,133 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-06 11:24:41,133 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-06 11:24:41,133 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:24:41,133 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|)) [2021-05-06 11:24:41,134 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:24:41,134 INFO L194 CegarLoopUtils]: At program point fEXIT(lines 12 14) the Hoare annotation is: (or (and (not (= |f_#in~z| 0)) (let ((.cse0 (div (* |f_#in~z| (- 1)) (- 2)))) (or (not (<= (div (+ (* .cse0 (- 1)) 134217728) (- 2147483648)) 0)) (not (= (mod |f_#in~z| (- 2)) 0)) (not (< 0 .cse0))))) (not (< (mod |f_#in~z| 4294967296) 268435455)) (and (= |f_#in~z| f_~z) (= |f_#res| (+ f_~z 2)))) [2021-05-06 11:24:41,134 INFO L201 CegarLoopUtils]: At program point fENTRY(lines 12 14) the Hoare annotation is: true [2021-05-06 11:24:41,134 INFO L194 CegarLoopUtils]: At program point fFINAL(lines 12 14) the Hoare annotation is: (or (and (not (= |f_#in~z| 0)) (let ((.cse0 (div (* |f_#in~z| (- 1)) (- 2)))) (or (not (<= (div (+ (* .cse0 (- 1)) 134217728) (- 2147483648)) 0)) (not (= (mod |f_#in~z| (- 2)) 0)) (not (< 0 .cse0))))) (not (< (mod |f_#in~z| 4294967296) 268435455)) (and (= |f_#in~z| f_~z) (= |f_#res| (+ f_~z 2)))) [2021-05-06 11:24:41,134 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:24:41,134 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:24:41,134 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:24:41,134 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:24:41,134 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 16 24) the Hoare annotation is: true [2021-05-06 11:24:41,135 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 16 24) the Hoare annotation is: true [2021-05-06 11:24:41,135 INFO L194 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (and (< (mod main_~x~0 4294967296) 268435455) (or (let ((.cse0 (div (+ (* main_~x~0 (- 1)) 2) (- 2)))) (and (< 0 .cse0) (= (mod main_~x~0 (- 2)) 0) (<= (div (+ (* .cse0 (- 1)) 134217728) (- 2147483648)) 0))) (= main_~x~0 2))) (= main_~x~0 0)) [2021-05-06 11:24:41,135 INFO L194 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse0 (= (+ main_~x~0 2) |main_#t~ret7|))) (or (and (< (mod main_~x~0 4294967296) 268435455) .cse0 (or (let ((.cse1 (div (+ (* main_~x~0 (- 1)) 2) (- 2)))) (and (< 0 .cse1) (= (mod main_~x~0 (- 2)) 0) (<= (div (+ (* .cse1 (- 1)) 134217728) (- 2147483648)) 0))) (= main_~x~0 2))) (and (= main_~x~0 0) .cse0))) [2021-05-06 11:24:41,135 INFO L194 CegarLoopUtils]: At program point L19-2(lines 19 21) the Hoare annotation is: (or (and (< (mod (+ main_~x~0 4294967294) 4294967296) 268435455) (or (let ((.cse0 (div (+ (* main_~x~0 (- 1)) 2) (- 2)))) (and (< 0 .cse0) (= (mod main_~x~0 (- 2)) 0) (<= (div (+ (* .cse0 (- 1)) 134217728) (- 2147483648)) 0))) (= main_~x~0 2))) (= main_~x~0 0)) [2021-05-06 11:24:41,135 INFO L194 CegarLoopUtils]: At program point L19-3(lines 19 21) the Hoare annotation is: (and (< (mod (+ main_~x~0 4294967294) 4294967296) 268435455) (or (let ((.cse0 (div (+ (* main_~x~0 (- 1)) 2) (- 2)))) (and (< 0 .cse0) (= (mod main_~x~0 (- 2)) 0) (<= (div (+ (* .cse0 (- 1)) 134217728) (- 2147483648)) 0))) (= main_~x~0 2))) [2021-05-06 11:24:41,135 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 16 24) the Hoare annotation is: true [2021-05-06 11:24:41,136 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-06 11:24:41,136 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-05-06 11:24:41,136 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:24:41,136 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))) [2021-05-06 11:24:41,136 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-05-06 11:24:41,136 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:24:41,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:24:41 BoogieIcfgContainer [2021-05-06 11:24:41,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:24:41,148 INFO L168 Benchmark]: Toolchain (without parser) took 3031.88 ms. Allocated memory was 195.0 MB in the beginning and 252.7 MB in the end (delta: 57.7 MB). Free memory was 159.5 MB in the beginning and 202.3 MB in the end (delta: -42.8 MB). Peak memory consumption was 104.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:24:41,149 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 195.0 MB. Free memory is still 176.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:24:41,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.25 ms. Allocated memory is still 195.0 MB. Free memory was 159.5 MB in the beginning and 179.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:24:41,149 INFO L168 Benchmark]: Boogie Preprocessor took 29.39 ms. Allocated memory is still 195.0 MB. Free memory was 179.2 MB in the beginning and 177.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:24:41,150 INFO L168 Benchmark]: RCFGBuilder took 278.39 ms. Allocated memory is still 195.0 MB. Free memory was 177.9 MB in the beginning and 164.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:24:41,150 INFO L168 Benchmark]: TraceAbstraction took 2500.74 ms. Allocated memory was 195.0 MB in the beginning and 252.7 MB in the end (delta: 57.7 MB). Free memory was 164.3 MB in the beginning and 202.3 MB in the end (delta: -38.0 MB). Peak memory consumption was 109.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:24:41,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 195.0 MB. Free memory is still 176.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 215.25 ms. Allocated memory is still 195.0 MB. Free memory was 159.5 MB in the beginning and 179.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.39 ms. Allocated memory is still 195.0 MB. Free memory was 179.2 MB in the beginning and 177.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 278.39 ms. Allocated memory is still 195.0 MB. Free memory was 177.9 MB in the beginning and 164.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2500.74 ms. Allocated memory was 195.0 MB in the beginning and 252.7 MB in the end (delta: 57.7 MB). Free memory was 164.3 MB in the beginning and 202.3 MB in the end (delta: -38.0 MB). Peak memory consumption was 109.8 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 6 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1878.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 754.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 555.6ms, InitialAbstractionConstructionTime: 19.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 39 SDslu, 45 SDs, 0 SdLazy, 82 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 839.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 23 LocationsWithAnnotation, 38 PreInvPairs, 50 NumberOfFragments, 345 HoareAnnotationTreeSize, 38 FomulaSimplifications, 294 FormulaSimplificationTreeSizeReduction, 94.5ms HoareSimplificationTime, 23 FomulaSimplificationsInter, 748 FormulaSimplificationTreeSizeReductionInter, 450.4ms 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: 19]: Loop Invariant Derived loop invariant: ((x + 4294967294) % 4294967296 < 268435455 && (((0 < (x * -1 + 2) / -2 && x % -2 == 0) && ((x * -1 + 2) / -2 * -1 + 134217728) / -2147483648 <= 0) || x == 2)) || x == 0 - ProcedureContractResult [Line: 12]: Procedure Contract for f Derived contract for procedure f: ((!(\old(z) == 0) && ((!((\old(z) * -1 / -2 * -1 + 134217728) / -2147483648 <= 0) || !(\old(z) % -2 == 0)) || !(0 < \old(z) * -1 / -2))) || !(\old(z) % 4294967296 < 268435455)) || (\old(z) == z && \result == z + 2) - ProcedureContractResult [Line: 16]: 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...