/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:01:40,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:01:40,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:01:40,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:01:40,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:01:40,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:01:40,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:01:40,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:01:40,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:01:40,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:01:40,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:01:40,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:01:40,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:01:40,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:01:40,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:01:40,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:01:40,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:01:40,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:01:40,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:01:40,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:01:40,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:01:40,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:01:40,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:01:40,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:01:40,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:01:40,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:01:40,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:01:40,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:01:40,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:01:40,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:01:40,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:01:40,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:01:40,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:01:40,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:01:40,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:01:40,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:01:40,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:01:40,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:01:40,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:01:40,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:01:40,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:01:40,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:01:40,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:01:40,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:01:40,180 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:01:40,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:01:40,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:01:40,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:01:40,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:01:40,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:01:40,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:01:40,181 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-08-22 23:01:40,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:01:40,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:01:40,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:01:40,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:01:40,488 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:01:40,489 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2020-08-22 23:01:40,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc377b68c/9de0b6bf66e54fc486a455feb48a62a6/FLAGcbfeab3c2 [2020-08-22 23:01:41,006 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:01:41,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2020-08-22 23:01:41,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc377b68c/9de0b6bf66e54fc486a455feb48a62a6/FLAGcbfeab3c2 [2020-08-22 23:01:41,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc377b68c/9de0b6bf66e54fc486a455feb48a62a6 [2020-08-22 23:01:41,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:01:41,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:01:41,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:41,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:01:41,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:01:41,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd39e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41, skipping insertion in model container [2020-08-22 23:01:41,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:01:41,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:01:41,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:41,638 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:01:41,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:41,669 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:01:41,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41 WrapperNode [2020-08-22 23:01:41,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:41,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:01:41,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:01:41,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:01:41,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... [2020-08-22 23:01:41,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:01:41,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:01:41,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:01:41,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:01:41,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:01:41,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:01:41,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:01:41,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:01:41,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:01:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:01:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:01:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:01:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:01:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:01:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:01:42,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:01:42,027 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:01:42,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:42 BoogieIcfgContainer [2020-08-22 23:01:42,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:01:42,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:01:42,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:01:42,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:01:42,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:01:41" (1/3) ... [2020-08-22 23:01:42,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54167287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:42, skipping insertion in model container [2020-08-22 23:01:42,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:41" (2/3) ... [2020-08-22 23:01:42,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54167287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:42, skipping insertion in model container [2020-08-22 23:01:42,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:42" (3/3) ... [2020-08-22 23:01:42,065 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-08-22 23:01:42,102 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:01:42,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:01:42,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:01:42,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:01:42,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:01:42,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:01:42,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:01:42,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:01:42,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:01:42,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:01:42,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:01:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-22 23:01:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-22 23:01:42,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:42,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:42,195 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1947240340, now seen corresponding path program 1 times [2020-08-22 23:01:42,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:42,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703290999] [2020-08-22 23:01:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:42,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703290999] [2020-08-22 23:01:42,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:42,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:01:42,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794712463] [2020-08-22 23:01:42,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:01:42,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:42,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:01:42,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:01:42,425 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-08-22 23:01:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:42,519 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-08-22 23:01:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:01:42,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-22 23:01:42,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:42,529 INFO L225 Difference]: With dead ends: 45 [2020-08-22 23:01:42,529 INFO L226 Difference]: Without dead ends: 18 [2020-08-22 23:01:42,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:01:42,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-22 23:01:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-22 23:01:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-22 23:01:42,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-08-22 23:01:42,576 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-08-22 23:01:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:42,577 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-08-22 23:01:42,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:01:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-08-22 23:01:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 23:01:42,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:42,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:01:42,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:01:42,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash -219943500, now seen corresponding path program 1 times [2020-08-22 23:01:42,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:42,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779869635] [2020-08-22 23:01:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:01:42,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:01:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:01:42,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:01:42,627 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 23:01:42,627 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:01:42,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:01:42,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:01:42 BoogieIcfgContainer [2020-08-22 23:01:42,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:01:42,658 INFO L168 Benchmark]: Toolchain (without parser) took 1220.46 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 104.8 MB in the beginning and 141.1 MB in the end (delta: -36.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:42,659 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:01:42,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.48 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:42,661 INFO L168 Benchmark]: Boogie Preprocessor took 106.89 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 95.2 MB in the beginning and 183.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:42,662 INFO L168 Benchmark]: RCFGBuilder took 253.59 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 170.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:42,663 INFO L168 Benchmark]: TraceAbstraction took 608.45 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 141.1 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:42,667 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 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.48 ms. Allocated memory is still 140.5 MB. Free memory was 104.4 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.89 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 95.2 MB in the beginning and 183.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.59 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 170.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 608.45 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 141.1 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 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=__VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=100, x=100] [L14] int y=__VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, x=100, y=1] [L16] COND TRUE y>0 VAL [x=100, y=1] [L18] COND FALSE !(x<100) VAL [x=100, y=1] [L23] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) 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, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 8 SDslu, 66 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 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...