/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/loops-crafted-1/iftelse.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:57:54,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:57:54,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:57:54,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:57:54,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:57:54,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:57:54,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:57:54,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:57:54,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:57:54,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:57:54,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:57:54,367 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:57:54,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:57:54,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:57:54,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:57:54,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:57:54,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:57:54,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:57:54,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:57:54,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:57:54,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:57:54,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:57:54,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:57:54,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:57:54,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:57:54,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:57:54,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:57:54,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:57:54,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:57:54,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:57:54,371 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:57:54,371 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:57:54,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:57:54,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:57:54,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:57:54,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:57:54,675 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:57:54,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c [2021-05-02 23:57:54,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe67178af/487d8f01b9414f398fdc19ac444c91c9/FLAG5331d9119 [2021-05-02 23:57:55,065 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:57:55,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c [2021-05-02 23:57:55,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe67178af/487d8f01b9414f398fdc19ac444c91c9/FLAG5331d9119 [2021-05-02 23:57:55,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe67178af/487d8f01b9414f398fdc19ac444c91c9 [2021-05-02 23:57:55,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:57:55,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:57:55,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:57:55,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:57:55,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:57:55,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6d6455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55, skipping insertion in model container [2021-05-02 23:57:55,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:57:55,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:57:55,621 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419] [2021-05-02 23:57:55,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:57:55,633 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:57:55,650 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419] [2021-05-02 23:57:55,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:57:55,689 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:57:55,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55 WrapperNode [2021-05-02 23:57:55,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:57:55,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:57:55,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:57:55,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:57:55,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... [2021-05-02 23:57:55,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:57:55,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:57:55,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:57:55,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:57:55,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:57:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:57:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:57:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:57:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 23:57:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:57:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:57:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:57:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:57:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:57:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:57:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 23:57:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:57:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 23:57:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:57:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:57:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:57:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:57:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:57:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:57:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:57:56,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:57:56,023 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:57:56,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:57:56 BoogieIcfgContainer [2021-05-02 23:57:56,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:57:56,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:57:56,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:57:56,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:57:56,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:57:55" (1/3) ... [2021-05-02 23:57:56,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308b59c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:57:56, skipping insertion in model container [2021-05-02 23:57:56,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:57:55" (2/3) ... [2021-05-02 23:57:56,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308b59c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:57:56, skipping insertion in model container [2021-05-02 23:57:56,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:57:56" (3/3) ... [2021-05-02 23:57:56,029 INFO L111 eAbstractionObserver]: Analyzing ICFG iftelse.c [2021-05-02 23:57:56,033 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:57:56,035 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:57:56,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:57:56,058 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:57:56,058 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:57:56,058 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:57:56,058 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:57:56,058 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:57:56,058 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:57:56,058 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:57:56,058 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:57:56,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:57:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 23:57:56,084 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:56,085 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:56,085 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:56,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:56,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1034116429, now seen corresponding path program 1 times [2021-05-02 23:57:56,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:56,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058088707] [2021-05-02 23:57:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:56,144 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:57:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:56,539 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:56,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058088707] [2021-05-02 23:57:56,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1058088707] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:56,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:56,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 23:57:56,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921022678] [2021-05-02 23:57:56,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 23:57:56,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:56,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 23:57:56,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:57:56,560 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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 8 states, 8 states have (on average 1.25) internal successors, (10), 6 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) [2021-05-02 23:57:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:56,916 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2021-05-02 23:57:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 23:57:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 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 [2021-05-02 23:57:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:56,921 INFO L225 Difference]: With dead ends: 52 [2021-05-02 23:57:56,921 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 23:57:56,923 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 327.1ms TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-05-02 23:57:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 23:57:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-02 23:57:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:57:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-05-02 23:57:56,948 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2021-05-02 23:57:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:56,948 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-05-02 23:57:56,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 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) [2021-05-02 23:57:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-05-02 23:57:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 23:57:56,949 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:56,949 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:56,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:57:56,949 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:56,950 INFO L82 PathProgramCache]: Analyzing trace with hash -244126219, now seen corresponding path program 1 times [2021-05-02 23:57:56,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:56,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118726851] [2021-05-02 23:57:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:56,962 INFO L181 rdanLoopAcceleration]: Guard: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] [2021-05-02 23:57:56,967 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:56,979 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-02 23:57:56,984 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:57,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:57,301 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:57,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118726851] [2021-05-02 23:57:57,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2118726851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:57,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:57,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 23:57:57,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926634381] [2021-05-02 23:57:57,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 23:57:57,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:57,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 23:57:57,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-02 23:57:57,305 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:57,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:57,526 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2021-05-02 23:57:57,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 23:57:57,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 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 17 [2021-05-02 23:57:57,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:57,528 INFO L225 Difference]: With dead ends: 36 [2021-05-02 23:57:57,529 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 23:57:57,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 283.4ms TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-05-02 23:57:57,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 23:57:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-02 23:57:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:57:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-02 23:57:57,540 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2021-05-02 23:57:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:57,540 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-02 23:57:57,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-02 23:57:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 23:57:57,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:57,541 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:57,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:57:57,542 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash 722095884, now seen corresponding path program 1 times [2021-05-02 23:57:57,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:57,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899358887] [2021-05-02 23:57:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:57,562 INFO L181 rdanLoopAcceleration]: Guard: Formula: (let ((.cse0 (mod v_main_~n~0_11 4294967296))) (and (< 0 .cse0) (<= (mod (div (mod (+ v_main_~i~0_17 3) 4294967296) 2) 4294967296) (mod (+ v_main_~j~0_14 3) 4294967296)) (< (mod v_main_~i~0_17 4294967296) .cse0) (not (= (mod (+ v_main_~i~0_17 1) 2) 0)))) InVars {main_~i~0=v_main_~i~0_17, main_~n~0=v_main_~n~0_11, main_~j~0=v_main_~j~0_14} OutVars{main_~i~0=v_main_~i~0_17, main_~n~0=v_main_~n~0_11, main_~j~0=v_main_~j~0_14} AuxVars[] AssignedVars[] [2021-05-02 23:57:57,585 WARN L240 tifierPushTermWalker]: treesize reduction 21, result has 90.2 percent of original size [2021-05-02 23:57:57,589 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,603 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,630 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,633 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,662 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-02 23:57:57,663 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-02 23:57:57,664 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,665 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-02 23:57:57,691 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,693 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,711 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-05-02 23:57:57,712 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-05-02 23:57:57,726 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,728 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-02 23:57:57,728 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,732 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-02 23:57:57,732 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:57,733 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-02 23:57:57,768 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-05-02 23:57:58,035 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2021-05-02 23:57:58,036 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-02 23:57:58,060 WARN L245 tifierPushTermWalker]: treesize reduction 21, result has 90.2 percent of original size 193 [2021-05-02 23:57:58,080 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:58,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:57:58,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 23:57:58,524 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:58,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899358887] [2021-05-02 23:57:58,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1899358887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:58,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:58,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-02 23:57:58,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416183926] [2021-05-02 23:57:58,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 23:57:58,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:58,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 23:57:58,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-05-02 23:57:58,525 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 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) [2021-05-02 23:57:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:58,864 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-05-02 23:57:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 23:57:58,865 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 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 22 [2021-05-02 23:57:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:58,865 INFO L225 Difference]: With dead ends: 31 [2021-05-02 23:57:58,865 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 23:57:58,866 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 536.7ms TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:57:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 23:57:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 23:57:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 23:57:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 23:57:58,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-05-02 23:57:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:58,867 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 23:57:58,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 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) [2021-05-02 23:57:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 23:57:58,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 23:57:58,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 23:57:58,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 23:57:59,282 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-05-02 23:57:59,282 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-05-02 23:57:59,282 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-05-02 23:57:59,282 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:57:59,282 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)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 23:57:59,282 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:57:59,282 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:57:59,283 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 23:57:59,283 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 23:57:59,283 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:57:59,283 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-05-02 23:57:59,283 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-02 23:57:59,283 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-05-02 23:57:59,283 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-05-02 23:57:59,283 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (< (mod (+ main_~j~0 4294967293) 4294967296) (mod main_~n~0 4294967296)) (= main_~j~0 3) (= main_~i~0 3)) [2021-05-02 23:57:59,283 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 17 32) the Hoare annotation is: true [2021-05-02 23:57:59,283 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 17 32) the Hoare annotation is: true [2021-05-02 23:57:59,283 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 17 32) the Hoare annotation is: true [2021-05-02 23:57:59,283 INFO L194 CegarLoopUtils]: At program point L28(lines 22 30) the Hoare annotation is: (let ((.cse0 (= main_~i~0 main_~j~0))) (or (and (= main_~i~0 0) .cse0) (and .cse0 (= main_~j~0 3)) (<= main_~n~0 (* 4294967296 (div main_~n~0 4294967296))))) [2021-05-02 23:57:59,283 INFO L194 CegarLoopUtils]: At program point L24(lines 24 27) the Hoare annotation is: (let ((.cse0 (mod main_~j~0 4294967296))) (or (and (= main_~i~0 (+ main_~j~0 3)) (= main_~i~0 3) (< .cse0 (mod main_~n~0 4294967296))) (and (= (ite (<= (mod (div (mod main_~i~0 4294967296) 2) 4294967296) .cse0) 1 0) 1) (<= main_~n~0 (* 4294967296 (div main_~n~0 4294967296)))))) [2021-05-02 23:57:59,283 INFO L194 CegarLoopUtils]: At program point L24-2(lines 22 30) the Hoare annotation is: (or (and (= main_~j~0 3) (= main_~i~0 3)) (<= main_~n~0 (* 4294967296 (div main_~n~0 4294967296)))) [2021-05-02 23:57:59,283 INFO L201 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: true [2021-05-02 23:57:59,284 INFO L201 CegarLoopUtils]: At program point L22-2(lines 22 30) the Hoare annotation is: true [2021-05-02 23:57:59,284 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2021-05-02 23:57:59,284 INFO L194 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (< 0 (mod main_~n~0 4294967296)))) [2021-05-02 23:57:59,284 INFO L194 CegarLoopUtils]: At program point L10(lines 10 12) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (< 0 (mod main_~n~0 4294967296))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-05-02 23:57:59,284 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (< 0 (mod main_~n~0 4294967296))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-05-02 23:57:59,284 INFO L194 CegarLoopUtils]: At program point L10-2(lines 9 14) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (< 0 (mod main_~n~0 4294967296))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2021-05-02 23:57:59,284 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (< 0 (mod main_~n~0 4294967296)))) [2021-05-02 23:57:59,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:57:59 BoogieIcfgContainer [2021-05-02 23:57:59,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:57:59,295 INFO L168 Benchmark]: Toolchain (without parser) took 3783.45 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 169.0 MB in the beginning and 115.5 MB in the end (delta: 53.5 MB). Peak memory consumption was 93.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:57:59,295 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 185.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:57:59,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.68 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 187.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:57:59,296 INFO L168 Benchmark]: Boogie Preprocessor took 39.03 ms. Allocated memory is still 204.5 MB. Free memory was 187.1 MB in the beginning and 185.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:57:59,296 INFO L168 Benchmark]: RCFGBuilder took 293.80 ms. Allocated memory is still 204.5 MB. Free memory was 185.7 MB in the beginning and 171.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 23:57:59,296 INFO L168 Benchmark]: TraceAbstraction took 3269.24 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 170.7 MB in the beginning and 115.5 MB in the end (delta: 55.2 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:57:59,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 185.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 174.68 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 187.1 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.03 ms. Allocated memory is still 204.5 MB. Free memory was 187.1 MB in the beginning and 185.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 293.80 ms. Allocated memory is still 204.5 MB. Free memory was 185.7 MB in the beginning and 171.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3269.24 ms. Allocated memory was 204.5 MB in the beginning and 245.4 MB in the end (delta: 40.9 MB). Free memory was 170.7 MB in the beginning and 115.5 MB in the end (delta: 55.2 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2811.0ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 20.7ms, AutomataDifference: 940.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 413.9ms, InitialAbstractionConstructionTime: 6.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 85 SDslu, 99 SDs, 0 SdLazy, 289 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 232.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1147.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=1, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 22 LocationsWithAnnotation, 40 PreInvPairs, 63 NumberOfFragments, 204 HoareAnnotationTreeSize, 40 FomulaSimplifications, 1449 FormulaSimplificationTreeSizeReduction, 70.7ms HoareSimplificationTime, 22 FomulaSimplificationsInter, 820 FormulaSimplificationTreeSizeReductionInter, 334.5ms 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: 22]: Loop Invariant Derived loop invariant: ((i == 0 && i == j) || (i == j && j == 3)) || n <= 4294967296 * (n / 4294967296) - ProcedureContractResult [Line: 17]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(\old(cond) == 1) || !(0 < n % 4294967296)) || \old(cond) == cond RESULT: Ultimate proved your program to be correct! Received shutdown request...