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/trex02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:16:59,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:16:59,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:16:59,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:16:59,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:16:59,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:16:59,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:16:59,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:16:59,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:16:59,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:16:59,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:16:59,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:16:59,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:16:59,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:16:59,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:16:59,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:16:59,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:16:59,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:16:59,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:16:59,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:16:59,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:16:59,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:16:59,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:16:59,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:16:59,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:16:59,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:16:59,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:16:59,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:16:59,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:16:59,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:16:59,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:16:59,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:16:59,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:16:59,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:16:59,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:16:59,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:16:59,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:16:59,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:16:59,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:16:59,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:16:59,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:16:59,268 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 [2019-10-14 23:16:59,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:16:59,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:16:59,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:16:59,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:16:59,292 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:16:59,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:16:59,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:16:59,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:16:59,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:16:59,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:16:59,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:16:59,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:16:59,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:16:59,295 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:16:59,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:16:59,295 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:16:59,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:16:59,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:16:59,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:16:59,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:16:59,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:16:59,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:16:59,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:16:59,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:16:59,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:16:59,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:16:59,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:16:59,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:16:59,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:16:59,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:16:59,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:16:59,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:16:59,596 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:16:59,596 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:16:59,597 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-2.c [2019-10-14 23:16:59,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616417fca/79973c7418394874ba75063769621bea/FLAG02dc6534b [2019-10-14 23:17:00,129 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:00,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-2.c [2019-10-14 23:17:00,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616417fca/79973c7418394874ba75063769621bea/FLAG02dc6534b [2019-10-14 23:17:00,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/616417fca/79973c7418394874ba75063769621bea [2019-10-14 23:17:00,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:00,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:00,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:00,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:00,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:00,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8bf277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00, skipping insertion in model container [2019-10-14 23:17:00,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:00,561 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:00,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:00,743 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:00,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:00,770 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:00,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00 WrapperNode [2019-10-14 23:17:00,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:00,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:00,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:00,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:00,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:00,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:00,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:00,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:00,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (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 [2019-10-14 23:17:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-14 23:17:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:17:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:17:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-14 23:17:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:01,114 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:01,114 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:01,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:01 BoogieIcfgContainer [2019-10-14 23:17:01,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:01,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:01,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:01,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:01,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:00" (1/3) ... [2019-10-14 23:17:01,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50779c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:01, skipping insertion in model container [2019-10-14 23:17:01,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:00" (2/3) ... [2019-10-14 23:17:01,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50779c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:01, skipping insertion in model container [2019-10-14 23:17:01,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:01" (3/3) ... [2019-10-14 23:17:01,125 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-2.c [2019-10-14 23:17:01,136 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:01,145 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:01,162 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:01,210 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:01,210 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:01,211 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:01,220 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:01,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:01,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:01,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:01,221 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-14 23:17:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-14 23:17:01,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:01,253 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:01,255 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:01,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:01,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2019-10-14 23:17:01,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:01,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144450644] [2019-10-14 23:17:01,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:01,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144450644] [2019-10-14 23:17:01,402 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:01,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:17:01,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379030329] [2019-10-14 23:17:01,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:17:01,408 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:01,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:17:01,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:17:01,425 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-10-14 23:17:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:01,481 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-10-14 23:17:01,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:17:01,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-14 23:17:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:01,495 INFO L225 Difference]: With dead ends: 35 [2019-10-14 23:17:01,495 INFO L226 Difference]: Without dead ends: 18 [2019-10-14 23:17:01,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:17:01,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-14 23:17:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-14 23:17:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-14 23:17:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-14 23:17:01,541 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-10-14 23:17:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:01,541 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-14 23:17:01,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:17:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-14 23:17:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-14 23:17:01,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:01,544 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:01,544 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:01,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2019-10-14 23:17:01,545 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:01,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147219379] [2019-10-14 23:17:01,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:17:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:17:01,595 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-14 23:17:01,596 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-14 23:17:01,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:01 BoogieIcfgContainer [2019-10-14 23:17:01,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:01,622 INFO L168 Benchmark]: Toolchain (without parser) took 1096.34 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 144.3 MB in the end (delta: -42.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,623 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.36 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,626 INFO L168 Benchmark]: Boogie Preprocessor took 112.16 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,627 INFO L168 Benchmark]: RCFGBuilder took 232.46 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 169.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,628 INFO L168 Benchmark]: TraceAbstraction took 502.33 ms. Allocated memory is still 202.9 MB. Free memory was 169.8 MB in the beginning and 144.3 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,632 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.36 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.16 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.7 MB in the beginning and 181.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 232.46 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 169.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 502.33 ms. Allocated memory is still 202.9 MB. Free memory was 169.8 MB in the beginning and 144.3 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 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: [L13] int x; VAL [\old(x)=1, x=0] [L20] x=__VERIFIER_nondet_int() [L21] COND FALSE !(x > 0) VAL [\old(x)=0, x=-1] [L26] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=-1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 5 SDslu, 10 SDs, 0 SdLazy, 7 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 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...