./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/ldv-regression/test_while_int.c_1.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 87afddccfd1da763b81be9f487d95a8fd1750032 .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:59:23,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:59:23,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:59:23,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:59:23,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:59:23,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:59:23,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:59:23,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:59:23,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:59:23,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:59:23,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:59:23,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:59:23,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:59:23,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:59:23,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:59:23,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:59:23,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:59:24,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:59:24,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:59:24,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:59:24,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:59:24,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:59:24,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:59:24,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:59:24,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:59:24,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:59:24,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:59:24,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:59:24,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:59:24,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:59:24,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:59:24,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:59:24,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:59:24,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:59:24,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:59:24,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:59:24,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:59:24,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:59:24,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:59:24,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:59:24,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:59:24,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:59:24,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:59:24,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:59:24,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:59:24,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:59:24,053 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:59:24,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:59:24,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:59:24,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:59:24,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:59:24,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:59:24,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:59:24,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:59:24,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:59:24,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:59:24,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:59:24,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:59:24,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:59:24,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:59:24,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:59:24,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:59:24,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:59:24,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:59:24,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:59:24,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:59:24,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:59:24,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:59:24,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:59:24,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:59:24,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:59:24,061 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 -> 87afddccfd1da763b81be9f487d95a8fd1750032 [2020-07-28 17:59:24,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:59:24,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:59:24,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:59:24,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:59:24,390 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:59:24,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2020-07-28 17:59:24,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860844694/245e337431bf4bed9ade0811caa074d4/FLAG1996242fb [2020-07-28 17:59:24,884 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:59:24,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2020-07-28 17:59:24,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860844694/245e337431bf4bed9ade0811caa074d4/FLAG1996242fb [2020-07-28 17:59:25,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860844694/245e337431bf4bed9ade0811caa074d4 [2020-07-28 17:59:25,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:59:25,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:59:25,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:59:25,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:59:25,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:59:25,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d22436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25, skipping insertion in model container [2020-07-28 17:59:25,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:59:25,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:59:25,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:59:25,480 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:59:25,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:59:25,510 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:59:25,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25 WrapperNode [2020-07-28 17:59:25,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:59:25,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:59:25,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:59:25,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:59:25,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:59:25,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:59:25,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:59:25,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:59:25,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (1/1) ... [2020-07-28 17:59:25,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:59:25,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:59:25,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:59:25,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:59:25,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (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 [2020-07-28 17:59:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:59:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:59:26,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:59:26,020 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-28 17:59:26,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:26 BoogieIcfgContainer [2020-07-28 17:59:26,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:59:26,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:59:26,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:59:26,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:59:26,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:59:25" (1/3) ... [2020-07-28 17:59:26,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6ad33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:59:26, skipping insertion in model container [2020-07-28 17:59:26,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:59:25" (2/3) ... [2020-07-28 17:59:26,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6ad33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:59:26, skipping insertion in model container [2020-07-28 17:59:26,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:26" (3/3) ... [2020-07-28 17:59:26,033 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-07-28 17:59:26,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:59:26,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:59:26,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:59:26,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:59:26,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:59:26,089 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:59:26,089 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:59:26,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:59:26,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:59:26,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:59:26,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:59:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:59:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:59:26,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:26,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:59:26,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:26,118 INFO L82 PathProgramCache]: Analyzing trace with hash 963404, now seen corresponding path program 1 times [2020-07-28 17:59:26,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:26,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577151378] [2020-07-28 17:59:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:26,277 INFO L280 TraceCheckUtils]: 0: Hoare triple {12#true} havoc main_#res;havoc main_#t~post0, main_~i~0;main_~i~0 := 0; {14#(<= ULTIMATE.start_main_~i~0 0)} is VALID [2020-07-28 17:59:26,279 INFO L280 TraceCheckUtils]: 1: Hoare triple {14#(<= ULTIMATE.start_main_~i~0 0)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {15#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:26,282 INFO L280 TraceCheckUtils]: 2: Hoare triple {15#(<= ULTIMATE.start_main_~i~0 1)} assume !(3 != main_~i~0); {13#false} is VALID [2020-07-28 17:59:26,282 INFO L280 TraceCheckUtils]: 3: Hoare triple {13#false} assume !false; {13#false} is VALID [2020-07-28 17:59:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:26,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577151378] [2020-07-28 17:59:26,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:59:26,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 17:59:26,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425743403] [2020-07-28 17:59:26,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:59:26,293 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:59:26,297 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 17:59:26,312 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:26,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 17:59:26,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:59:26,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 17:59:26,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:59:26,324 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-07-28 17:59:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:26,430 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2020-07-28 17:59:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:59:26,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 17:59:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:59:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:59:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2020-07-28 17:59:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 17:59:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2020-07-28 17:59:26,440 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 29 transitions. [2020-07-28 17:59:26,493 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:26,503 INFO L225 Difference]: With dead ends: 20 [2020-07-28 17:59:26,503 INFO L226 Difference]: Without dead ends: 8 [2020-07-28 17:59:26,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 17:59:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-07-28 17:59:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-07-28 17:59:26,538 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:59:26,539 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second operand 7 states. [2020-07-28 17:59:26,540 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 7 states. [2020-07-28 17:59:26,540 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 7 states. [2020-07-28 17:59:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:26,542 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-07-28 17:59:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-07-28 17:59:26,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:26,543 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:26,543 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 8 states. [2020-07-28 17:59:26,543 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 8 states. [2020-07-28 17:59:26,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:26,545 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-07-28 17:59:26,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-07-28 17:59:26,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:26,546 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:26,547 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:59:26,547 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:59:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-28 17:59:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-07-28 17:59:26,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2020-07-28 17:59:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:59:26,551 INFO L479 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-07-28 17:59:26,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 17:59:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-07-28 17:59:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-28 17:59:26,552 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:26,552 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-07-28 17:59:26,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:59:26,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash 925765417, now seen corresponding path program 1 times [2020-07-28 17:59:26,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:26,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575499171] [2020-07-28 17:59:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:26,619 INFO L280 TraceCheckUtils]: 0: Hoare triple {69#true} havoc main_#res;havoc main_#t~post0, main_~i~0;main_~i~0 := 0; {71#(<= ULTIMATE.start_main_~i~0 0)} is VALID [2020-07-28 17:59:26,620 INFO L280 TraceCheckUtils]: 1: Hoare triple {71#(<= ULTIMATE.start_main_~i~0 0)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {72#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:26,621 INFO L280 TraceCheckUtils]: 2: Hoare triple {72#(<= ULTIMATE.start_main_~i~0 1)} assume 3 != main_~i~0; {72#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:26,623 INFO L280 TraceCheckUtils]: 3: Hoare triple {72#(<= ULTIMATE.start_main_~i~0 1)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {73#(<= ULTIMATE.start_main_~i~0 2)} is VALID [2020-07-28 17:59:26,624 INFO L280 TraceCheckUtils]: 4: Hoare triple {73#(<= ULTIMATE.start_main_~i~0 2)} assume !(3 != main_~i~0); {70#false} is VALID [2020-07-28 17:59:26,624 INFO L280 TraceCheckUtils]: 5: Hoare triple {70#false} assume !false; {70#false} is VALID [2020-07-28 17:59:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:26,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575499171] [2020-07-28 17:59:26,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584216518] [2020-07-28 17:59:26,626 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 [2020-07-28 17:59:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:26,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 17:59:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:59:26,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:59:26,929 INFO L280 TraceCheckUtils]: 0: Hoare triple {69#true} havoc main_#res;havoc main_#t~post0, main_~i~0;main_~i~0 := 0; {71#(<= ULTIMATE.start_main_~i~0 0)} is VALID [2020-07-28 17:59:26,930 INFO L280 TraceCheckUtils]: 1: Hoare triple {71#(<= ULTIMATE.start_main_~i~0 0)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {72#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:26,932 INFO L280 TraceCheckUtils]: 2: Hoare triple {72#(<= ULTIMATE.start_main_~i~0 1)} assume 3 != main_~i~0; {72#(<= ULTIMATE.start_main_~i~0 1)} is VALID [2020-07-28 17:59:26,933 INFO L280 TraceCheckUtils]: 3: Hoare triple {72#(<= ULTIMATE.start_main_~i~0 1)} assume !!(main_~i~0 < 5);main_#t~post0 := main_~i~0;main_~i~0 := 1 + main_#t~post0;havoc main_#t~post0; {73#(<= ULTIMATE.start_main_~i~0 2)} is VALID [2020-07-28 17:59:26,934 INFO L280 TraceCheckUtils]: 4: Hoare triple {73#(<= ULTIMATE.start_main_~i~0 2)} assume !(3 != main_~i~0); {70#false} is VALID [2020-07-28 17:59:26,935 INFO L280 TraceCheckUtils]: 5: Hoare triple {70#false} assume !false; {70#false} is VALID [2020-07-28 17:59:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:59:26,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-28 17:59:26,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-07-28 17:59:26,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741255740] [2020-07-28 17:59:26,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-28 17:59:26,939 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:59:26,939 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 17:59:26,948 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:26,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 17:59:26,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:59:26,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 17:59:26,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:59:26,950 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2020-07-28 17:59:26,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:26,995 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-28 17:59:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 17:59:26,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-28 17:59:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:59:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:59:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-07-28 17:59:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 17:59:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-07-28 17:59:26,999 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 12 transitions. [2020-07-28 17:59:27,018 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:59:27,019 INFO L225 Difference]: With dead ends: 12 [2020-07-28 17:59:27,019 INFO L226 Difference]: Without dead ends: 10 [2020-07-28 17:59:27,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-28 17:59:27,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-07-28 17:59:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-28 17:59:27,026 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:59:27,027 INFO L82 GeneralOperation]: Start isEquivalent. First operand 10 states. Second operand 9 states. [2020-07-28 17:59:27,027 INFO L74 IsIncluded]: Start isIncluded. First operand 10 states. Second operand 9 states. [2020-07-28 17:59:27,027 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 9 states. [2020-07-28 17:59:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,029 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-28 17:59:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-28 17:59:27,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:27,030 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:27,030 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand 10 states. [2020-07-28 17:59:27,030 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 10 states. [2020-07-28 17:59:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:59:27,032 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-07-28 17:59:27,032 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-07-28 17:59:27,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:59:27,033 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:59:27,033 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:59:27,034 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:59:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-28 17:59:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-07-28 17:59:27,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-07-28 17:59:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:59:27,036 INFO L479 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-07-28 17:59:27,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 17:59:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-07-28 17:59:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-28 17:59:27,037 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:59:27,037 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2020-07-28 17:59:27,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-28 17:59:27,239 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:59:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:59:27,240 INFO L82 PathProgramCache]: Analyzing trace with hash 602269638, now seen corresponding path program 2 times [2020-07-28 17:59:27,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:59:27,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716789677] [2020-07-28 17:59:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:59:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:59:27,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:59:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:59:27,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:59:27,271 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:59:27,271 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:59:27,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 17:59:27,289 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:59:27,289 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:59:27,289 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:59:27,290 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 17:59:27,290 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2020-07-28 17:59:27,290 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-28 17:59:27,290 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-28 17:59:27,290 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-28 17:59:27,290 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:59:27,291 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:59:27,291 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:59:27,291 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:59:27,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:59:27 BoogieIcfgContainer [2020-07-28 17:59:27,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:59:27,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:59:27,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:59:27,294 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:59:27,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:59:26" (3/4) ... [2020-07-28 17:59:27,297 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:59:27,345 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:59:27,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:59:27,349 INFO L168 Benchmark]: Toolchain (without parser) took 2088.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 958.9 MB in the beginning and 1.0 GB in the end (delta: -73.3 MB). Peak memory consumption was 66.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:27,349 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:27,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.68 ms. Allocated memory is still 1.0 GB. Free memory was 958.9 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:27,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.92 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:27,351 INFO L168 Benchmark]: Boogie Preprocessor took 79.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:27,352 INFO L168 Benchmark]: RCFGBuilder took 398.13 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:27,353 INFO L168 Benchmark]: TraceAbstraction took 1268.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:59:27,353 INFO L168 Benchmark]: Witness Printer took 51.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:59:27,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.68 ms. Allocated memory is still 1.0 GB. Free memory was 958.9 MB in the beginning and 948.1 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 33.92 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 398.13 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1268.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 11.5 GB. * Witness Printer took 51.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 1 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...