./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gj2007b.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e17546c38a51643b6e392ce04436e766214299e ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:02:33,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:02:33,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:02:33,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:02:33,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:02:33,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:02:33,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:02:33,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:02:33,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:02:33,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:02:33,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:02:33,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:02:33,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:02:33,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:02:33,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:02:33,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:02:33,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:02:33,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:02:33,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:02:33,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:02:33,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:02:33,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:02:33,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:02:33,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:02:33,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:02:33,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:02:33,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:02:33,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:02:33,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:02:33,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:02:33,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:02:33,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:02:33,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:02:33,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:02:33,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:02:33,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:02:33,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:02:33,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:02:33,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:02:33,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:02:33,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:02:33,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:02:33,184 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:02:33,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:02:33,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:02:33,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:02:33,188 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:02:33,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:02:33,188 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:02:33,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:02:33,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:02:33,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:02:33,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:02:33,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:02:33,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:02:33,191 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:02:33,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:02:33,192 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:02:33,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:02:33,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:02:33,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:02:33,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:02:33,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:02:33,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:02:33,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:02:33,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:02:33,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:02:33,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:02:33,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:02:33,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:02:33,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e17546c38a51643b6e392ce04436e766214299e [2019-11-28 00:02:33,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:02:33,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:02:33,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:02:33,512 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:02:33,512 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:02:33,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007b.i [2019-11-28 00:02:33,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccab0f6f/92e5eb3582bb4708831e9556a2a56b2a/FLAG06975a7e8 [2019-11-28 00:02:34,060 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:02:34,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007b.i [2019-11-28 00:02:34,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccab0f6f/92e5eb3582bb4708831e9556a2a56b2a/FLAG06975a7e8 [2019-11-28 00:02:34,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ccab0f6f/92e5eb3582bb4708831e9556a2a56b2a [2019-11-28 00:02:34,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:02:34,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:02:34,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:34,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:02:34,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:02:34,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d217661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34, skipping insertion in model container [2019-11-28 00:02:34,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:02:34,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:02:34,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:34,689 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:02:34,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:02:34,728 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:02:34,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34 WrapperNode [2019-11-28 00:02:34,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:02:34,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:34,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:02:34,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:02:34,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:02:34,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:02:34,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:02:34,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:02:34,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (1/1) ... [2019-11-28 00:02:34,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:02:34,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:02:34,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:02:34,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:02:34,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (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 [2019-11-28 00:02:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:02:34,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:02:35,078 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:02:35,078 INFO L297 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 00:02:35,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:35 BoogieIcfgContainer [2019-11-28 00:02:35,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:02:35,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:02:35,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:02:35,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:02:35,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:02:34" (1/3) ... [2019-11-28 00:02:35,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33474f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:35, skipping insertion in model container [2019-11-28 00:02:35,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:02:34" (2/3) ... [2019-11-28 00:02:35,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33474f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:02:35, skipping insertion in model container [2019-11-28 00:02:35,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:35" (3/3) ... [2019-11-28 00:02:35,091 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2019-11-28 00:02:35,128 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:02:35,146 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 00:02:35,176 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-28 00:02:35,201 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:02:35,201 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:02:35,202 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:02:35,202 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:02:35,202 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:02:35,202 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:02:35,202 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:02:35,203 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:02:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-28 00:02:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:02:35,226 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:35,227 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:02:35,227 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:35,233 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-28 00:02:35,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:35,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912803005] [2019-11-28 00:02:35,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:35,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912803005] [2019-11-28 00:02:35,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:35,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 00:02:35,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415319329] [2019-11-28 00:02:35,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 00:02:35,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:35,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 00:02:35,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:02:35,359 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-28 00:02:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:35,374 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2019-11-28 00:02:35,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 00:02:35,376 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 00:02:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:35,384 INFO L225 Difference]: With dead ends: 28 [2019-11-28 00:02:35,384 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 00:02:35,387 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:02:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 00:02:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 00:02:35,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 00:02:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-28 00:02:35,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2019-11-28 00:02:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:35,417 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-28 00:02:35,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 00:02:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-28 00:02:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:02:35,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:35,418 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:02:35,418 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:35,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:35,418 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-11-28 00:02:35,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:35,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567735567] [2019-11-28 00:02:35,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:35,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567735567] [2019-11-28 00:02:35,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:35,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:02:35,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046888268] [2019-11-28 00:02:35,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:02:35,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:35,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:02:35,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:02:35,497 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2019-11-28 00:02:35,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:35,550 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-11-28 00:02:35,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:02:35,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 00:02:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:35,551 INFO L225 Difference]: With dead ends: 23 [2019-11-28 00:02:35,551 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 00:02:35,552 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:02:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 00:02:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-11-28 00:02:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 00:02:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-28 00:02:35,557 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 5 [2019-11-28 00:02:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:35,557 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-28 00:02:35,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:02:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-28 00:02:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 00:02:35,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:35,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:02:35,559 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:35,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1415330318, now seen corresponding path program 1 times [2019-11-28 00:02:35,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:35,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255112198] [2019-11-28 00:02:35,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:35,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255112198] [2019-11-28 00:02:35,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:02:35,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 00:02:35,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752654228] [2019-11-28 00:02:35,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:02:35,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:35,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:02:35,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:02:35,620 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 5 states. [2019-11-28 00:02:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:35,703 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-11-28 00:02:35,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 00:02:35,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-28 00:02:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:35,705 INFO L225 Difference]: With dead ends: 27 [2019-11-28 00:02:35,705 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 00:02:35,707 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 00:02:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 00:02:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2019-11-28 00:02:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 00:02:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-28 00:02:35,715 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 7 [2019-11-28 00:02:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:35,716 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-28 00:02:35,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:02:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-28 00:02:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 00:02:35,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:35,718 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:02:35,721 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash 608596189, now seen corresponding path program 1 times [2019-11-28 00:02:35,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:35,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472710142] [2019-11-28 00:02:35,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:35,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472710142] [2019-11-28 00:02:35,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689578733] [2019-11-28 00:02:35,778 INFO L94 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 [2019-11-28 00:02:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:35,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 00:02:35,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:35,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:35,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:35,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 00:02:35,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206675043] [2019-11-28 00:02:35,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 00:02:35,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:35,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 00:02:35,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 00:02:35,879 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 6 states. [2019-11-28 00:02:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:35,938 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-28 00:02:35,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:02:35,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-28 00:02:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:35,940 INFO L225 Difference]: With dead ends: 18 [2019-11-28 00:02:35,940 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 00:02:35,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:02:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 00:02:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2019-11-28 00:02:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 00:02:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-28 00:02:35,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2019-11-28 00:02:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:35,946 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-28 00:02:35,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 00:02:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-28 00:02:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 00:02:35,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:02:35,947 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:02:36,150 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:36,151 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:02:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:02:36,152 INFO L82 PathProgramCache]: Analyzing trace with hash 745541216, now seen corresponding path program 1 times [2019-11-28 00:02:36,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:02:36,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657349646] [2019-11-28 00:02:36,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:02:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:36,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657349646] [2019-11-28 00:02:36,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246075912] [2019-11-28 00:02:36,225 INFO L94 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 [2019-11-28 00:02:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:02:36,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 00:02:36,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:02:36,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 00:02:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:02:36,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:02:36,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2019-11-28 00:02:36,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263861408] [2019-11-28 00:02:36,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 00:02:36,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:02:36,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 00:02:36,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-28 00:02:36,364 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 11 states. [2019-11-28 00:02:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:02:36,690 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-11-28 00:02:36,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 00:02:36,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2019-11-28 00:02:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:02:36,692 INFO L225 Difference]: With dead ends: 28 [2019-11-28 00:02:36,692 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:02:36,693 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2019-11-28 00:02:36,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:02:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:02:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:02:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:02:36,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-28 00:02:36,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:02:36,695 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:02:36,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 00:02:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:02:36,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:02:36,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:02:36,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:02:37,031 INFO L246 CegarLoopResult]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:02:37,032 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:02:37,032 INFO L249 CegarLoopResult]: At program point L4-5(lines 3 8) the Hoare annotation is: true [2019-11-28 00:02:37,032 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:02:37,032 INFO L246 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2019-11-28 00:02:37,033 INFO L246 CegarLoopResult]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2019-11-28 00:02:37,033 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 00:02:37,033 INFO L246 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-28 00:02:37,033 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:02:37,033 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:02:37,033 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 00:02:37,034 INFO L249 CegarLoopResult]: At program point L22(lines 10 23) the Hoare annotation is: true [2019-11-28 00:02:37,034 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~m~0)) (.cse1 (<= 0 ULTIMATE.start_main_~x~0))) (or (and (<= ULTIMATE.start_main_~m~0 0) .cse0 .cse1) (and .cse0 (< ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~n~0) .cse1))) [2019-11-28 00:02:37,034 INFO L246 CegarLoopResult]: For program point L14-3(lines 14 19) no Hoare annotation was computed. [2019-11-28 00:02:37,034 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 00:02:37,035 INFO L242 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~m~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (< ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~n~0) .cse2) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~x~0 0) (<= ULTIMATE.start_main_~n~0 0)) (and (<= ULTIMATE.start_main_~m~0 0) .cse0 .cse1 .cse2))) [2019-11-28 00:02:37,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:02:37 BoogieIcfgContainer [2019-11-28 00:02:37,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:02:37,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:02:37,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:02:37,055 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:02:37,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:02:35" (3/4) ... [2019-11-28 00:02:37,062 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:02:37,081 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:02:37,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:02:37,179 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:02:37,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:02:37,183 INFO L168 Benchmark]: Toolchain (without parser) took 2739.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 956.3 MB in the beginning and 980.9 MB in the end (delta: -24.5 MB). Peak memory consumption was 114.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:37,184 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:02:37,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.17 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:37,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:37,193 INFO L168 Benchmark]: Boogie Preprocessor took 25.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:37,199 INFO L168 Benchmark]: RCFGBuilder took 238.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:37,200 INFO L168 Benchmark]: TraceAbstraction took 1972.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.9 MB in the end (delta: 137.7 MB). Peak memory consumption was 137.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:02:37,201 INFO L168 Benchmark]: Witness Printer took 124.75 ms. Allocated memory is still 1.2 GB. Free memory is still 980.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:02:37,207 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.17 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 86.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 238.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1972.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.9 MB in the end (delta: 137.7 MB). Peak memory consumption was 137.7 MB. Max. memory is 11.5 GB. * Witness Printer took 124.75 ms. Allocated memory is still 1.2 GB. Free memory is still 980.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((m <= 0 && 0 <= m) && 0 <= x) || ((0 <= m && m < n) && 0 <= x) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((((0 <= m && 1 == cond) && m < n) && 0 <= x) || ((!(0 == cond) && x <= 0) && n <= 0)) || (((m <= 0 && 0 <= m) && 1 == cond) && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 41 SDtfs, 72 SDslu, 50 SDs, 0 SdLazy, 107 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 61 HoareAnnotationTreeSize, 4 FomulaSimplifications, 98 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1209 SizeOfPredicates, 12 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...