/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/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:01:55,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:01:55,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:01:55,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:01:55,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:01:55,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:01:55,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:01:55,487 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 23:01:55,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:01:55,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:01:55,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:01:55,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:01:55,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:01:55,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:01:55,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:01:55,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:01:55,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:01:55,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:01:55,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:01:55,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:01:55,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:01:55,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:01:55,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:01:55,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:01:55,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:01:55,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:01:55,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:01:55,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:01:55,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:01:55,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:01:55,509 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:01:55,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:01:55,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:01:55,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:01:55,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:01:55,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:01:55,886 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:01:55,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2021-05-02 23:01:55,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba3b82db/12e8675fe3e54701beabc42b627205a8/FLAG0d99da9ca [2021-05-02 23:01:56,372 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:01:56,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2021-05-02 23:01:56,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba3b82db/12e8675fe3e54701beabc42b627205a8/FLAG0d99da9ca [2021-05-02 23:01:56,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba3b82db/12e8675fe3e54701beabc42b627205a8 [2021-05-02 23:01:56,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:01:56,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:01:56,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:01:56,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:01:56,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:01:56,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:56,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7a70fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56, skipping insertion in model container [2021-05-02 23:01:56,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:56,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:01:56,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:01:56,921 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/n.c11.c[317,330] [2021-05-02 23:01:56,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:01:56,939 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:01:56,982 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/n.c11.c[317,330] [2021-05-02 23:01:56,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:01:56,997 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:01:56,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56 WrapperNode [2021-05-02 23:01:56,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:01:57,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:01:57,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:01:57,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:01:57,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:57,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:57,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:57,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:57,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:57,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:57,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (1/1) ... [2021-05-02 23:01:57,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:01:57,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:01:57,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:01:57,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:01:57,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (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 23:01:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:01:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:01:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:01:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:01:57,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:01:57,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:01:57,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:01:57,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:01:57,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:01:57,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:01:57,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:01:57,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:01:57,359 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:01:57,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:01:57 BoogieIcfgContainer [2021-05-02 23:01:57,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:01:57,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:01:57,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:01:57,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:01:57,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:01:56" (1/3) ... [2021-05-02 23:01:57,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caba96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:01:57, skipping insertion in model container [2021-05-02 23:01:57,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:01:56" (2/3) ... [2021-05-02 23:01:57,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caba96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:01:57, skipping insertion in model container [2021-05-02 23:01:57,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:01:57" (3/3) ... [2021-05-02 23:01:57,368 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c11.c [2021-05-02 23:01:57,373 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:01:57,376 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:01:57,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:01:57,414 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:01:57,414 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:01:57,414 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:01:57,414 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:01:57,414 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:01:57,414 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:01:57,414 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:01:57,414 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:01:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 23:01:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:01:57,439 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:01:57,440 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:01:57,440 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:01:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:01:57,446 INFO L82 PathProgramCache]: Analyzing trace with hash 536722933, now seen corresponding path program 1 times [2021-05-02 23:01:57,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:01:57,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862055447] [2021-05-02 23:01:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:01:57,506 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:01:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:01:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:57,716 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 23:01:57,717 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:01:57,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862055447] [2021-05-02 23:01:57,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1862055447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:01:57,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:01:57,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 23:01:57,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618208475] [2021-05-02 23:01:57,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 23:01:57,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:01:57,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 23:01:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:01:57,742 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:01:57,815 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-05-02 23:01:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:01:57,817 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 [2021-05-02 23:01:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:01:57,822 INFO L225 Difference]: With dead ends: 33 [2021-05-02 23:01:57,822 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 23:01:57,825 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:01:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 23:01:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 23:01:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-05-02 23:01:57,856 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-05-02 23:01:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:01:57,856 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-05-02 23:01:57,856 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) [2021-05-02 23:01:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-05-02 23:01:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:01:57,857 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:01:57,857 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:01:57,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:01:57,858 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:01:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:01:57,858 INFO L82 PathProgramCache]: Analyzing trace with hash 526564202, now seen corresponding path program 1 times [2021-05-02 23:01:57,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:01:57,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250998170] [2021-05-02 23:01:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:01:57,861 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:01:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:57,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:01:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:58,009 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 23:01:58,009 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:01:58,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250998170] [2021-05-02 23:01:58,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [250998170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:01:58,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:01:58,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:01:58,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050235713] [2021-05-02 23:01:58,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:01:58,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:01:58,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:01:58,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:01:58,012 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:58,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:01:58,193 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-02 23:01:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:01:58,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 23:01:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:01:58,196 INFO L225 Difference]: With dead ends: 28 [2021-05-02 23:01:58,196 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 23:01:58,198 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:01:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 23:01:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-05-02 23:01:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-05-02 23:01:58,203 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-05-02 23:01:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:01:58,203 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-05-02 23:01:58,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-05-02 23:01:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 23:01:58,204 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:01:58,204 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:01:58,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:01:58,205 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:01:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:01:58,205 INFO L82 PathProgramCache]: Analyzing trace with hash -234031063, now seen corresponding path program 1 times [2021-05-02 23:01:58,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:01:58,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071382427] [2021-05-02 23:01:58,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:01:58,227 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:01:58,232 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:01:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:01:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:58,391 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 23:01:58,392 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:01:58,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071382427] [2021-05-02 23:01:58,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071382427] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:01:58,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:01:58,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 23:01:58,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075379401] [2021-05-02 23:01:58,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 23:01:58,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:01:58,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 23:01:58,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:01:58,394 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 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 23:01:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:01:58,581 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-02 23:01:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 23:01:58,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 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 23:01:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:01:58,583 INFO L225 Difference]: With dead ends: 31 [2021-05-02 23:01:58,583 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 23:01:58,583 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 191.7ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:01:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 23:01:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-05-02 23:01:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-05-02 23:01:58,589 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-05-02 23:01:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:01:58,589 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-05-02 23:01:58,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 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 23:01:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-05-02 23:01:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 23:01:58,590 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:01:58,590 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:01:58,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:01:58,591 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:01:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:01:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1119883018, now seen corresponding path program 2 times [2021-05-02 23:01:58,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:01:58,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110421265] [2021-05-02 23:01:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:01:58,597 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:01:58,598 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:01:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:01:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:58,724 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 23:01:58,724 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:01:58,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110421265] [2021-05-02 23:01:58,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [110421265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:01:58,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:01:58,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 23:01:58,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030565530] [2021-05-02 23:01:58,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 23:01:58,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:01:58,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 23:01:58,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:01:58,727 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 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 23:01:58,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:01:58,934 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-05-02 23:01:58,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 23:01:58,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 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 23:01:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:01:58,936 INFO L225 Difference]: With dead ends: 37 [2021-05-02 23:01:58,936 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 23:01:58,938 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 196.5ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:01:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 23:01:58,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-05-02 23:01:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-05-02 23:01:58,951 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2021-05-02 23:01:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:01:58,951 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-05-02 23:01:58,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 6 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 23:01:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-05-02 23:01:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 23:01:58,952 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:01:58,952 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:01:58,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 23:01:58,953 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:01:58,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:01:58,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1536393353, now seen corresponding path program 3 times [2021-05-02 23:01:58,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:01:58,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697357186] [2021-05-02 23:01:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:01:58,963 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:01:58,968 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:01:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:01:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:59,156 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 23:01:59,156 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:01:59,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697357186] [2021-05-02 23:01:59,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [697357186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:01:59,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:01:59,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 23:01:59,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912895972] [2021-05-02 23:01:59,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 23:01:59,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:01:59,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 23:01:59,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:01:59,159 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 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 23:01:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:01:59,415 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-05-02 23:01:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 23:01:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 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 20 [2021-05-02 23:01:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:01:59,417 INFO L225 Difference]: With dead ends: 43 [2021-05-02 23:01:59,417 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 23:01:59,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 237.7ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-05-02 23:01:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 23:01:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-02 23:01:59,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-05-02 23:01:59,426 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2021-05-02 23:01:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:01:59,426 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-05-02 23:01:59,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 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 23:01:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-05-02 23:01:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 23:01:59,427 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:01:59,427 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:01:59,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 23:01:59,427 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:01:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:01:59,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1635265194, now seen corresponding path program 4 times [2021-05-02 23:01:59,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:01:59,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257582637] [2021-05-02 23:01:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:01:59,433 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:01:59,434 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:01:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:59,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:01:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:01:59,583 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 23:01:59,584 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:01:59,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257582637] [2021-05-02 23:01:59,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1257582637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:01:59,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:01:59,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 23:01:59,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782839053] [2021-05-02 23:01:59,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 23:01:59,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:01:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 23:01:59,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 23:01:59,586 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 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 23:01:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:01:59,886 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-05-02 23:01:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 23:01:59,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 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 23 [2021-05-02 23:01:59,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:01:59,887 INFO L225 Difference]: With dead ends: 34 [2021-05-02 23:01:59,887 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 23:01:59,888 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 258.3ms TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-05-02 23:01:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 23:01:59,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-05-02 23:01:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:01:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-05-02 23:01:59,904 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2021-05-02 23:01:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:01:59,905 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-05-02 23:01:59,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 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 23:01:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-05-02 23:01:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 23:01:59,907 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:01:59,907 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:01:59,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-02 23:01:59,907 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:01:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:01:59,907 INFO L82 PathProgramCache]: Analyzing trace with hash 778715369, now seen corresponding path program 5 times [2021-05-02 23:01:59,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:01:59,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145979668] [2021-05-02 23:01:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:01:59,919 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-02 23:01:59,920 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:01:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:00,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:02:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:02:00,111 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 23:02:00,112 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:02:00,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145979668] [2021-05-02 23:02:00,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [145979668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:02:00,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:02:00,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 23:02:00,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282191811] [2021-05-02 23:02:00,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 23:02:00,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:02:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 23:02:00,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:02:00,113 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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 23:02:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:02:00,292 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-05-02 23:02:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 23:02:00,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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 26 [2021-05-02 23:02:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:02:00,293 INFO L225 Difference]: With dead ends: 39 [2021-05-02 23:02:00,293 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 23:02:00,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 202.8ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:02:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 23:02:00,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 23:02:00,294 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 23:02:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 23:02:00,295 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-05-02 23:02:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:02:00,295 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 23:02:00,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 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 23:02:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 23:02:00,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 23:02:00,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-02 23:02:00,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 23:02:00,708 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 23:02:00,709 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 23:02:00,709 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 23:02:00,710 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:02:00,710 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 23:02:00,710 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:02:00,710 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:02:00,711 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 23:02:00,711 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 23:02:00,711 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:02:00,711 INFO L201 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-05-02 23:02:00,711 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2021-05-02 23:02:00,711 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 14 34) the Hoare annotation is: true [2021-05-02 23:02:00,711 INFO L194 CegarLoopUtils]: At program point L23(lines 23 24) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 3) (< 0 (+ (div main_~len~0 4294967296) 1)))) [2021-05-02 23:02:00,712 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 24) the Hoare annotation is: (or (= main_~len~0 0) (and (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2021-05-02 23:02:00,712 INFO L194 CegarLoopUtils]: At program point L21-2(lines 21 29) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2021-05-02 23:02:00,712 INFO L194 CegarLoopUtils]: At program point L21-3(lines 21 29) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2021-05-02 23:02:00,712 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 14 34) the Hoare annotation is: true [2021-05-02 23:02:00,712 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-02 23:02:00,713 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-05-02 23:02:00,713 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:02:00,713 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))) [2021-05-02 23:02:00,713 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-05-02 23:02:00,713 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:02:00,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:02:00 BoogieIcfgContainer [2021-05-02 23:02:00,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:02:00,730 INFO L168 Benchmark]: Toolchain (without parser) took 3948.98 ms. Allocated memory was 180.4 MB in the beginning and 218.1 MB in the end (delta: 37.7 MB). Free memory was 145.9 MB in the beginning and 193.9 MB in the end (delta: -48.0 MB). Peak memory consumption was 108.4 MB. Max. memory is 8.0 GB. [2021-05-02 23:02:00,730 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 180.4 MB. Free memory is still 162.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:02:00,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.73 ms. Allocated memory is still 180.4 MB. Free memory was 145.7 MB in the beginning and 164.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-05-02 23:02:00,734 INFO L168 Benchmark]: Boogie Preprocessor took 39.72 ms. Allocated memory is still 180.4 MB. Free memory was 163.6 MB in the beginning and 162.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 23:02:00,736 INFO L168 Benchmark]: RCFGBuilder took 318.48 ms. Allocated memory is still 180.4 MB. Free memory was 162.5 MB in the beginning and 149.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:02:00,738 INFO L168 Benchmark]: TraceAbstraction took 3366.18 ms. Allocated memory was 180.4 MB in the beginning and 218.1 MB in the end (delta: 37.7 MB). Free memory was 148.9 MB in the beginning and 193.9 MB in the end (delta: -45.1 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. [2021-05-02 23:02:00,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 180.4 MB. Free memory is still 162.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 212.73 ms. Allocated memory is still 180.4 MB. Free memory was 145.7 MB in the beginning and 164.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.72 ms. Allocated memory is still 180.4 MB. Free memory was 163.6 MB in the beginning and 162.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 318.48 ms. Allocated memory is still 180.4 MB. Free memory was 162.5 MB in the beginning and 149.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3366.18 ms. Allocated memory was 180.4 MB in the beginning and 218.1 MB in the end (delta: 37.7 MB). Free memory was 148.9 MB in the beginning and 193.9 MB in the end (delta: -45.1 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2884.2ms, OverallIterations: 7, TraceHistogramMax: 5, EmptinessCheckTime: 19.0ms, AutomataDifference: 1435.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 412.3ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 143 SDslu, 150 SDs, 0 SdLazy, 423 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 354.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1332.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=6, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 64.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 81 PreInvPairs, 125 NumberOfFragments, 124 HoareAnnotationTreeSize, 81 FomulaSimplifications, 1866 FormulaSimplificationTreeSizeReduction, 111.0ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 955 FormulaSimplificationTreeSizeReductionInter, 284.6ms 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: 21]: Loop Invariant Derived loop invariant: 0 < len / 4294967296 + 1 && len <= 4 - ProcedureContractResult [Line: 14]: 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...