/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:48:58,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:48:58,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:48:58,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:48:58,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:48:58,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:48:58,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:48:58,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:48:58,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:48:58,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:48:58,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:48:58,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:48:58,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:48:58,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:48:58,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:48:58,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:48:58,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:48:58,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:48:58,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:48:58,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:48:58,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:48:58,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:48:58,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:48:58,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:48:58,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:48:58,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:48:58,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:48:58,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:48:58,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:48:58,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:48:58,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:48:58,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:48:58,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:48:58,237 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:48:58,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:48:58,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:48:58,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:48:58,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:48:58,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:48:58,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:48:58,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:48:58,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:48:58,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:48:58,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:48:58,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:48:58,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:48:58,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:48:58,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:48:58,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:48:58,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:48:58,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:48:58,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:48:58,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:48:58,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:48:58,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:48:58,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:48:58,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:48:58,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:48:58,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:48:58,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:48:58,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:48:58,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:48:58,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:48:58,597 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:48:58,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2020-08-18 18:48:58,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70709486b/f9d8634ed0fc412b851ac1a13632c676/FLAG8cf0a0b04 [2020-08-18 18:48:59,127 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:48:59,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/trex03-1.c [2020-08-18 18:48:59,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70709486b/f9d8634ed0fc412b851ac1a13632c676/FLAG8cf0a0b04 [2020-08-18 18:48:59,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70709486b/f9d8634ed0fc412b851ac1a13632c676 [2020-08-18 18:48:59,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:48:59,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:48:59,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:48:59,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:48:59,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:48:59,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a61b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59, skipping insertion in model container [2020-08-18 18:48:59,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:48:59,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:48:59,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:48:59,785 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:48:59,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:48:59,813 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:48:59,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59 WrapperNode [2020-08-18 18:48:59,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:48:59,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:48:59,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:48:59,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:48:59,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... [2020-08-18 18:48:59,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:48:59,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:48:59,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:48:59,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:48:59,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:48:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:48:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:48:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:48:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:48:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:48:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:48:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 18:48:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 18:48:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:48:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:48:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:49:00,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:49:00,180 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 18:49:00,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:00 BoogieIcfgContainer [2020-08-18 18:49:00,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:49:00,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:49:00,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:49:00,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:49:00,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:48:59" (1/3) ... [2020-08-18 18:49:00,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f1bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:00, skipping insertion in model container [2020-08-18 18:49:00,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:59" (2/3) ... [2020-08-18 18:49:00,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f1bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:00, skipping insertion in model container [2020-08-18 18:49:00,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:00" (3/3) ... [2020-08-18 18:49:00,192 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2020-08-18 18:49:00,203 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:49:00,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:49:00,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:49:00,247 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:49:00,247 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:49:00,248 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:49:00,248 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:49:00,248 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:49:00,248 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:49:00,248 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:49:00,248 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:49:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-18 18:49:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 18:49:00,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:00,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:00,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:00,279 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2020-08-18 18:49:00,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:00,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409799384] [2020-08-18 18:49:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:00,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409799384] [2020-08-18 18:49:00,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:00,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-18 18:49:00,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607442081] [2020-08-18 18:49:00,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-18 18:49:00,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-18 18:49:00,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 18:49:00,431 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-08-18 18:49:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:00,455 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-18 18:49:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-18 18:49:00,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-18 18:49:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:00,465 INFO L225 Difference]: With dead ends: 33 [2020-08-18 18:49:00,465 INFO L226 Difference]: Without dead ends: 14 [2020-08-18 18:49:00,469 INFO L675 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 [2020-08-18 18:49:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-18 18:49:00,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-18 18:49:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-18 18:49:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-08-18 18:49:00,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-08-18 18:49:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:00,510 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-08-18 18:49:00,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-18 18:49:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-08-18 18:49:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 18:49:00,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:00,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:00,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:49:00,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:00,513 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2020-08-18 18:49:00,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:00,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708191161] [2020-08-18 18:49:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:49:00,564 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:49:00,564 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:49:00,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:49:00,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:49:00 BoogieIcfgContainer [2020-08-18 18:49:00,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:49:00,582 INFO L168 Benchmark]: Toolchain (without parser) took 1010.96 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 104.7 MB in the beginning and 148.1 MB in the end (delta: -43.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:00,583 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:49:00,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.56 ms. Allocated memory is still 141.6 MB. Free memory was 104.5 MB in the beginning and 94.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:00,586 INFO L168 Benchmark]: Boogie Preprocessor took 115.85 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 94.9 MB in the beginning and 183.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:00,587 INFO L168 Benchmark]: RCFGBuilder took 253.66 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 170.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:00,588 INFO L168 Benchmark]: TraceAbstraction took 394.98 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 148.1 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:00,592 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.56 ms. Allocated memory is still 141.6 MB. Free memory was 104.5 MB in the beginning and 94.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.85 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 94.9 MB in the beginning and 183.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.66 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 170.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 394.98 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 148.1 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 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) [L28] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...