/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:25:19,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:25:19,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:25:19,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:25:19,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:25:19,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:25:19,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:25:20,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:25:20,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:25:20,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:25:20,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:25:20,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:25:20,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:25:20,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:25:20,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:25:20,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:25:20,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:25:20,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:25:20,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:25:20,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:25:20,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:25:20,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:25:20,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:25:20,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:25:20,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:25:20,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:25:20,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:25:20,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:25:20,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:25:20,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:25:20,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:25:20,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:25:20,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:25:20,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:25:20,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:25:20,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:25:20,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:25:20,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:25:20,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:25:20,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:25:20,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:25:20,091 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:25:20,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:25:20,092 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:25:20,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:25:20,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:25:20,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:25:20,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:25:20,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:25:20,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:25:20,093 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:25:20,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:25:20,094 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:25:20,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:25:20,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:25:20,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:25:20,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:25:20,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:25:20,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:25:20,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:25:20,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:25:20,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:25:20,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:25:20,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:25:20,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:25:20,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:25:20,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:25:20,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:25:20,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:25:20,393 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:25:20,394 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:25:20,394 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2019-11-06 21:25:20,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6143cb762/a8e4795c4d144d3ab385fa755ad94a3d/FLAG43d368a09 [2019-11-06 21:25:20,947 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:25:20,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c [2019-11-06 21:25:20,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6143cb762/a8e4795c4d144d3ab385fa755ad94a3d/FLAG43d368a09 [2019-11-06 21:25:21,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6143cb762/a8e4795c4d144d3ab385fa755ad94a3d [2019-11-06 21:25:21,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:25:21,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:25:21,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:21,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:25:21,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:25:21,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67058eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21, skipping insertion in model container [2019-11-06 21:25:21,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,334 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:25:21,356 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:25:21,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:21,548 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:25:21,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:25:21,584 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:25:21,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21 WrapperNode [2019-11-06 21:25:21,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:25:21,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:25:21,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:25:21,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:25:21,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (1/1) ... [2019-11-06 21:25:21,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:25:21,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:25:21,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:25:21,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:25:21,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (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 [2019-11-06 21:25:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:25:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:25:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:25:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-06 21:25:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:25:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:25:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:25:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 21:25:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:25:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-06 21:25:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:25:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:25:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:25:21,966 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:25:21,966 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-06 21:25:21,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:21 BoogieIcfgContainer [2019-11-06 21:25:21,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:25:21,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:25:21,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:25:21,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:25:21,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:25:21" (1/3) ... [2019-11-06 21:25:21,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a95abef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:21, skipping insertion in model container [2019-11-06 21:25:21,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:25:21" (2/3) ... [2019-11-06 21:25:21,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a95abef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:25:21, skipping insertion in model container [2019-11-06 21:25:21,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:25:21" (3/3) ... [2019-11-06 21:25:21,992 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2019-11-06 21:25:22,014 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:25:22,030 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:25:22,049 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:25:22,079 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:25:22,079 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:25:22,079 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:25:22,079 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:25:22,079 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:25:22,079 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:25:22,080 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:25:22,080 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:25:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-06 21:25:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:25:22,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:22,101 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:22,102 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:22,107 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times [2019-11-06 21:25:22,114 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:22,115 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161357478] [2019-11-06 21:25:22,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:25:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:25:22,233 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161357478] [2019-11-06 21:25:22,234 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:25:22,234 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:25:22,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113704092] [2019-11-06 21:25:22,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:25:22,241 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:25:22,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:25:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:25:22,258 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-06 21:25:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:25:22,283 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2019-11-06 21:25:22,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:25:22,284 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-06 21:25:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:25:22,294 INFO L225 Difference]: With dead ends: 45 [2019-11-06 21:25:22,294 INFO L226 Difference]: Without dead ends: 16 [2019-11-06 21:25:22,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:25:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-06 21:25:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-06 21:25:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-06 21:25:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-06 21:25:22,339 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-11-06 21:25:22,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:25:22,340 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-06 21:25:22,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:25:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-06 21:25:22,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:25:22,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:25:22,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:25:22,342 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:25:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:25:22,343 INFO L82 PathProgramCache]: Analyzing trace with hash -359251077, now seen corresponding path program 1 times [2019-11-06 21:25:22,343 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:25:22,343 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175720925] [2019-11-06 21:25:22,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:25:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 21:25:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-06 21:25:22,406 INFO L172 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-06 21:25:22,406 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-06 21:25:22,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:25:22 BoogieIcfgContainer [2019-11-06 21:25:22,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:25:22,435 INFO L168 Benchmark]: Toolchain (without parser) took 1116.34 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 145.8 MB in the end (delta: -42.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:22,437 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:25:22,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.25 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 93.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:22,439 INFO L168 Benchmark]: Boogie Preprocessor took 116.94 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 181.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:22,440 INFO L168 Benchmark]: RCFGBuilder took 274.08 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 168.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:22,441 INFO L168 Benchmark]: TraceAbstraction took 454.16 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 145.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-11-06 21:25:22,445 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 266.25 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 93.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.94 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 181.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.08 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 168.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 454.16 ms. Allocated memory is still 202.9 MB. Free memory was 167.8 MB in the beginning and 145.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34] _Bool c = __VERIFIER_nondet_bool(); [L35] COND FALSE !(\read(c)) VAL [c=0] [L38] CALL f(2) VAL [\old(d)=2] [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L14] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L17] COND FALSE !(z < k) VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L18] CALL __VERIFIER_assert(z>=2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...