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/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:16:59,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:16:59,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:16:59,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:16:59,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:16:59,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:16:59,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:16:59,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:16:59,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:16:59,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:16:59,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:16:59,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:16:59,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:16:59,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:16:59,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:16:59,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:16:59,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:16:59,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:16:59,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:16:59,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:16:59,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:16:59,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:16:59,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:16:59,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:16:59,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:16:59,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:16:59,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:16:59,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:16:59,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:16:59,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:16:59,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:16:59,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:16:59,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:16:59,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:16:59,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:16:59,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:16:59,653 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 23:16:59,680 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:16:59,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:16:59,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:16:59,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:16:59,684 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:16:59,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:16:59,685 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:16:59,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:16:59,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:16:59,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:16:59,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:16:59,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:16:59,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:16:59,687 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:16:59,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:16:59,688 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:16:59,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:16:59,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:16:59,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:16:59,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:16:59,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:16:59,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:16:59,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:16:59,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:16:59,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:16:59,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:16:59,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:16:59,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:16:59,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:16:59,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:16:59,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:16:59,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:16:59,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:16:59,980 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:16:59,980 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2019-10-14 23:17:00,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b997abd3/6f3cdd1e2e044dc4aa40618a40d3fd05/FLAGd592f4141 [2019-10-14 23:17:00,558 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:00,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2019-10-14 23:17:00,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b997abd3/6f3cdd1e2e044dc4aa40618a40d3fd05/FLAGd592f4141 [2019-10-14 23:17:00,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b997abd3/6f3cdd1e2e044dc4aa40618a40d3fd05 [2019-10-14 23:17:00,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:00,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:00,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:00,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:00,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:00,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf600bb 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 23:17:00,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:00" (1/1) ... [2019-10-14 23:17:00,949 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:00,973 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:01,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:01,156 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:01,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:01,187 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:01,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01 WrapperNode [2019-10-14 23:17:01,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:01,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:01,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:01,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:01,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (1/1) ... [2019-10-14 23:17:01,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (1/1) ... [2019-10-14 23:17:01,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (1/1) ... [2019-10-14 23:17:01,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (1/1) ... [2019-10-14 23:17:01,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (1/1) ... [2019-10-14 23:17:01,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (1/1) ... [2019-10-14 23:17:01,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (1/1) ... [2019-10-14 23:17:01,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:01,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:01,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:01,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:01,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (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 23:17:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-14 23:17:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:17:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:01,519 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:01,519 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:01,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:01 BoogieIcfgContainer [2019-10-14 23:17:01,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:01,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:01,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:01,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:01,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:00" (1/3) ... [2019-10-14 23:17:01,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c38ff2 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 23:17:01,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:01" (2/3) ... [2019-10-14 23:17:01,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c38ff2 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 23:17:01,527 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 23:17:01,529 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2019-10-14 23:17:01,537 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:01,544 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:01,556 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:01,582 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:01,582 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:01,582 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:01,582 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:01,582 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:01,583 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:01,583 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:01,583 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:01,603 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-14 23:17:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:01,609 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:01,610 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:01,612 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2019-10-14 23:17:01,628 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:01,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388989828] [2019-10-14 23:17:01,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,629 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:01,749 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 23:17:01,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388989828] [2019-10-14 23:17:01,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:01,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:17:01,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133778904] [2019-10-14 23:17:01,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:17:01,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:01,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:17:01,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:01,774 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-14 23:17:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:01,798 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-14 23:17:01,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:17:01,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:17:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:01,808 INFO L225 Difference]: With dead ends: 33 [2019-10-14 23:17:01,808 INFO L226 Difference]: Without dead ends: 14 [2019-10-14 23:17:01,812 INFO L600 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 [2019-10-14 23:17:01,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-14 23:17:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-14 23:17:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-14 23:17:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-10-14 23:17:01,851 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2019-10-14 23:17:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:01,852 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-10-14 23:17:01,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:17:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-10-14 23:17:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:01,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:01,853 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:01,854 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:01,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:01,854 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2019-10-14 23:17:01,854 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:01,855 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173629729] [2019-10-14 23:17:01,855 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,855 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:01,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:17:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:17:01,928 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-14 23:17:01,928 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-14 23:17:01,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:01 BoogieIcfgContainer [2019-10-14 23:17:01,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:01,952 INFO L168 Benchmark]: Toolchain (without parser) took 1019.45 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 104.5 MB in the beginning and 147.6 MB in the end (delta: -43.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,953 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.56 ms. Allocated memory is still 140.5 MB. Free memory was 104.2 MB in the beginning and 94.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,955 INFO L168 Benchmark]: Boogie Preprocessor took 107.90 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 182.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,956 INFO L168 Benchmark]: RCFGBuilder took 223.90 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 170.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,957 INFO L168 Benchmark]: TraceAbstraction took 427.60 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 147.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:01,962 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.56 ms. Allocated memory is still 140.5 MB. Free memory was 104.2 MB in the beginning and 94.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.90 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 182.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 223.90 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 170.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 427.60 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 147.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 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: [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L16] unsigned int d1=1, d2=1, d3=1; [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=2, c2=3, d1=1, d2=1, d3=1, x1=0, x2=0, x3=1] [L28] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) 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 4 procedures, 21 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 23 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=21occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...