/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:19:28,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:19:28,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:19:28,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:19:28,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:19:28,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:19:28,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:19:28,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:19:28,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:19:28,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:19:28,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:19:28,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:19:28,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:19:28,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:19:28,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:19:28,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:19:28,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:19:28,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:19:28,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:19:28,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:19:28,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 13:19:28,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:19:28,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:19:28,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:19:28,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:19:28,229 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:19:28,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:19:28,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:19:28,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:19:28,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:19:28,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:19:28,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:19:28,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:19:28,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:19:28,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:19:28,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:19:28,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:19:28,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:19:28,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:19:28,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:19:28,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:19:28,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:19:28,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:19:28,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:19:28,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:19:28,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:19:28,522 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:19:28,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2021-05-02 13:19:28,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28da7c5e5/cebcd4a729c84aee9ad0b82513e02e66/FLAGc9c653db6 [2021-05-02 13:19:28,878 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:19:28,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2021-05-02 13:19:28,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28da7c5e5/cebcd4a729c84aee9ad0b82513e02e66/FLAGc9c653db6 [2021-05-02 13:19:29,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28da7c5e5/cebcd4a729c84aee9ad0b82513e02e66 [2021-05-02 13:19:29,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:19:29,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:19:29,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:19:29,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:19:29,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:19:29,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6c76b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29, skipping insertion in model container [2021-05-02 13:19:29,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:19:29,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:19:29,414 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/sumt2.c[403,416] [2021-05-02 13:19:29,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:19:29,424 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:19:29,431 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/sumt2.c[403,416] [2021-05-02 13:19:29,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:19:29,441 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:19:29,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29 WrapperNode [2021-05-02 13:19:29,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:19:29,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:19:29,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:19:29,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:19:29,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (1/1) ... [2021-05-02 13:19:29,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:19:29,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:19:29,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:19:29,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:19:29,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (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 13:19:29,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:19:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:19:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:19:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 13:19:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:19:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:19:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:19:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:19:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:19:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:19:29,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:19:29,786 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:19:29,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:19:29 BoogieIcfgContainer [2021-05-02 13:19:29,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:19:29,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:19:29,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:19:29,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:19:29,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:19:29" (1/3) ... [2021-05-02 13:19:29,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f35a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:19:29, skipping insertion in model container [2021-05-02 13:19:29,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:19:29" (2/3) ... [2021-05-02 13:19:29,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f35a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:19:29, skipping insertion in model container [2021-05-02 13:19:29,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:19:29" (3/3) ... [2021-05-02 13:19:29,792 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2021-05-02 13:19:29,796 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:19:29,798 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:19:29,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:19:29,855 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:19:29,855 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:19:29,855 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:19:29,855 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:19:29,856 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:19:29,856 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:19:29,856 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:19:29,856 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:19:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 13:19:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:19:29,893 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:29,894 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:29,894 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:29,898 INFO L82 PathProgramCache]: Analyzing trace with hash 410732699, now seen corresponding path program 1 times [2021-05-02 13:19:29,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:29,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87913432] [2021-05-02 13:19:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,101 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 13:19:30,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:30,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87913432] [2021-05-02 13:19:30,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87913432] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:19:30,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:19:30,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 13:19:30,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196308982] [2021-05-02 13:19:30,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 13:19:30,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:30,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 13:19:30,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 13:19:30,119 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:30,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:30,156 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-05-02 13:19:30,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 13:19:30,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 13:19:30,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:30,162 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:19:30,162 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 13:19:30,163 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 13:19:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 13:19:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 13:19:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 13:19:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 13:19:30,186 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-02 13:19:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:30,186 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 13:19:30,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:30,186 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 13:19:30,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:19:30,187 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:30,187 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:30,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:19:30,187 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:30,188 INFO L82 PathProgramCache]: Analyzing trace with hash 400573968, now seen corresponding path program 1 times [2021-05-02 13:19:30,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:30,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788979139] [2021-05-02 13:19:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,312 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 13:19:30,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:30,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788979139] [2021-05-02 13:19:30,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788979139] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:19:30,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:19:30,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 13:19:30,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154119260] [2021-05-02 13:19:30,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 13:19:30,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:30,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 13:19:30,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:19:30,314 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:30,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:30,423 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-02 13:19:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:19:30,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 13:19:30,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:30,424 INFO L225 Difference]: With dead ends: 28 [2021-05-02 13:19:30,424 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 13:19:30,425 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 13:19:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 13:19:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 13:19:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 13:19:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-02 13:19:30,429 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2021-05-02 13:19:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:30,429 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-02 13:19:30,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-02 13:19:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 13:19:30,429 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:30,430 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:30,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 13:19:30,430 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1582670899, now seen corresponding path program 1 times [2021-05-02 13:19:30,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:30,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96170534] [2021-05-02 13:19:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:30,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:30,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96170534] [2021-05-02 13:19:30,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96170534] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:30,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613009455] [2021-05-02 13:19:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:30,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 13:19:30,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:30,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613009455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:30,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:19:30,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-05-02 13:19:30,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843051573] [2021-05-02 13:19:30,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 13:19:30,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 13:19:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-05-02 13:19:30,837 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:31,062 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-02 13:19:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 13:19:31,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 13:19:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:31,063 INFO L225 Difference]: With dead ends: 31 [2021-05-02 13:19:31,063 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 13:19:31,064 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 358.3ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-05-02 13:19:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 13:19:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-02 13:19:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 13:19:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-02 13:19:31,085 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2021-05-02 13:19:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:31,086 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-02 13:19:31,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-02 13:19:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 13:19:31,086 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:31,086 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:31,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 13:19:31,305 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:31,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:31,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1085372558, now seen corresponding path program 1 times [2021-05-02 13:19:31,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:31,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554042113] [2021-05-02 13:19:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:31,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:31,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554042113] [2021-05-02 13:19:31,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554042113] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:31,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869476714] [2021-05-02 13:19:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:31,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 13:19:31,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:31,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:31,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869476714] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:31,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:19:31,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2021-05-02 13:19:31,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123361426] [2021-05-02 13:19:31,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 13:19:31,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:31,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 13:19:31,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-05-02 13:19:31,730 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 14 states have internal predecessors, (22), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:32,145 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 13:19:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 13:19:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 14 states have internal predecessors, (22), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-05-02 13:19:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:32,146 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:19:32,147 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 13:19:32,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 557.2ms TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-05-02 13:19:32,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 13:19:32,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-02 13:19:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 13:19:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-05-02 13:19:32,150 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2021-05-02 13:19:32,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:32,150 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-05-02 13:19:32,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 14 states have internal predecessors, (22), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:19:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-05-02 13:19:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 13:19:32,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:19:32,151 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:19:32,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:32,367 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:19:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:19:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1187707093, now seen corresponding path program 2 times [2021-05-02 13:19:32,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:19:32,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105005655] [2021-05-02 13:19:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:19:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:19:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:19:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:32,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:19:32,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105005655] [2021-05-02 13:19:32,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105005655] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:32,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776698245] [2021-05-02 13:19:32,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:32,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:19:32,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:19:32,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 13:19:32,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:19:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:19:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:19:32,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776698245] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:19:32,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:19:32,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 24 [2021-05-02 13:19:32,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121859504] [2021-05-02 13:19:32,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 13:19:32,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:19:32,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 13:19:32,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-05-02 13:19:32,953 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 13:19:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:19:33,685 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-05-02 13:19:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 13:19:33,686 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-05-02 13:19:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:19:33,691 INFO L225 Difference]: With dead ends: 36 [2021-05-02 13:19:33,691 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:19:33,693 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 946.2ms TimeCoverageRelationStatistics Valid=214, Invalid=1268, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 13:19:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:19:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:19:33,693 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 13:19:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:19:33,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-05-02 13:19:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:19:33,693 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:19:33,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 13:19:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:19:33,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:19:33,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:19:33,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:19:34,225 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2021-05-02 13:19:34,227 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 13:19:34,227 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 13:19:34,227 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 13:19:34,227 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:19:34,227 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 13:19:34,227 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:19:34,227 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-05-02 13:19:34,228 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point L31(line 31) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 16 33) the Hoare annotation is: true [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point L25(lines 25 28) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 16 33) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point L25-2(lines 25 28) no Hoare annotation was computed. [2021-05-02 13:19:34,228 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (and (= main_~i~0 0) .cse0 (= main_~l~0 0)) (and (<= 1 main_~i~0) (= main_~l~0 2) (<= main_~i~0 1) (= main_~j~0 1)) (not (<= ~SIZE~0 20000001)) (and (= main_~l~0 1) .cse0 (= main_~i~0 1)) (let ((.cse1 (+ main_~i~0 main_~j~0))) (and (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) (<= .cse1 main_~l~0) (<= main_~l~0 .cse1))) (not (<= 20000001 ~SIZE~0)))) [2021-05-02 13:19:34,228 INFO L194 CegarLoopUtils]: At program point L23-3(lines 23 30) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (and (= main_~i~0 0) .cse0 (= main_~l~0 0)) (and (<= 1 main_~i~0) (= main_~l~0 2) (<= main_~i~0 1) (= main_~j~0 1)) (let ((.cse1 (+ main_~i~0 main_~j~0))) (and (<= (+ (* 4294967296 (div main_~n~0 4294967296)) main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) (<= .cse1 main_~l~0) (<= main_~l~0 .cse1) (<= (+ (* 4294967296 (div main_~l~0 4294967296)) 2) .cse1))) (not (<= ~SIZE~0 20000001)) (and (= main_~l~0 1) .cse0 (= main_~i~0 1)) (not (<= 20000001 ~SIZE~0)))) [2021-05-02 13:19:34,228 INFO L198 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-05-02 13:19:34,229 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 16 33) no Hoare annotation was computed. [2021-05-02 13:19:34,229 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2021-05-02 13:19:34,229 INFO L198 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-05-02 13:19:34,229 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 8 13) no Hoare annotation was computed. [2021-05-02 13:19:34,229 INFO L198 CegarLoopUtils]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-05-02 13:19:34,229 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 13) no Hoare annotation was computed. [2021-05-02 13:19:34,229 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-05-02 13:19:34,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 01:19:34 BoogieIcfgContainer [2021-05-02 13:19:34,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 13:19:34,239 INFO L168 Benchmark]: Toolchain (without parser) took 4933.44 ms. Allocated memory was 176.2 MB in the beginning and 287.3 MB in the end (delta: 111.1 MB). Free memory was 141.0 MB in the beginning and 199.6 MB in the end (delta: -58.5 MB). Peak memory consumption was 114.0 MB. Max. memory is 8.0 GB. [2021-05-02 13:19:34,240 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 176.2 MB. Free memory is still 157.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:19:34,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.36 ms. Allocated memory is still 176.2 MB. Free memory was 140.8 MB in the beginning and 131.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 13:19:34,240 INFO L168 Benchmark]: Boogie Preprocessor took 16.65 ms. Allocated memory is still 176.2 MB. Free memory was 131.4 MB in the beginning and 130.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 13:19:34,240 INFO L168 Benchmark]: RCFGBuilder took 327.28 ms. Allocated memory is still 176.2 MB. Free memory was 129.9 MB in the beginning and 146.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2021-05-02 13:19:34,240 INFO L168 Benchmark]: TraceAbstraction took 4451.35 ms. Allocated memory was 176.2 MB in the beginning and 287.3 MB in the end (delta: 111.1 MB). Free memory was 145.6 MB in the beginning and 199.6 MB in the end (delta: -53.9 MB). Peak memory consumption was 119.5 MB. Max. memory is 8.0 GB. [2021-05-02 13:19:34,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 176.2 MB. Free memory is still 157.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 132.36 ms. Allocated memory is still 176.2 MB. Free memory was 140.8 MB in the beginning and 131.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.65 ms. Allocated memory is still 176.2 MB. Free memory was 131.4 MB in the beginning and 130.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 327.28 ms. Allocated memory is still 176.2 MB. Free memory was 129.9 MB in the beginning and 146.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4451.35 ms. Allocated memory was 176.2 MB in the beginning and 287.3 MB in the end (delta: 111.1 MB). Free memory was 145.6 MB in the beginning and 199.6 MB in the end (delta: -53.9 MB). Peak memory consumption was 119.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4057.7ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 32.7ms, AutomataDifference: 1551.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 315.1ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 52 SDtfs, 125 SDslu, 194 SDs, 0 SdLazy, 568 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 311.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2012.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 187 HoareAnnotationTreeSize, 16 FomulaSimplifications, 86 FormulaSimplificationTreeSizeReduction, 38.1ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 656 FormulaSimplificationTreeSizeReductionInter, 270.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.3ms SsaConstructionTime, 145.7ms SatisfiabilityAnalysisTime, 1418.7ms InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 1361 SizeOfPredicates, 4 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/36 InterpolantCoveringCapability, 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: 23]: Loop Invariant Derived loop invariant: ((((((i == 0 && j == 0) && l == 0) || (((1 <= i && l == 2) && i <= 1) && j == 1)) || !(SIZE <= 20000001)) || ((l == 1 && j == 0) && i == 1)) || ((4294967296 * (n / 4294967296) + l + 3 <= i + j + n && i + j <= l) && l <= i + j)) || !(20000001 <= SIZE) RESULT: Ultimate proved your program to be correct! Received shutdown request...