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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:37,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:37,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:37,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:37,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:37,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:37,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:37,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:37,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:37,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:37,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:37,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:37,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:37,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:37,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:37,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:37,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:37,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:37,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:37,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:37,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:37,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:37,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:37,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:37,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:37,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:37,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:37,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:37,414 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 [2019-10-13 19:53:37,429 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:37,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:37,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:37,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:37,431 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:37,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:37,431 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:37,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:37,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:37,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:37,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:37,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:37,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:37,433 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:37,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:37,433 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:37,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:37,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:37,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:37,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:37,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:37,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:37,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:37,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:37,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:37,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:37,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:37,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:37,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 19:53:37,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:37,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:37,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:37,742 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:37,742 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:37,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c [2019-10-13 19:53:37,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0699bfa1/7e7814dd8ad440c49e48f4b43f620552/FLAG8c2657794 [2019-10-13 19:53:38,173 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:38,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c [2019-10-13 19:53:38,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0699bfa1/7e7814dd8ad440c49e48f4b43f620552/FLAG8c2657794 [2019-10-13 19:53:38,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0699bfa1/7e7814dd8ad440c49e48f4b43f620552 [2019-10-13 19:53:38,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:38,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:38,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:38,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:38,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:38,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:38" (1/1) ... [2019-10-13 19:53:38,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498c91dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:38, skipping insertion in model container [2019-10-13 19:53:38,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:38" (1/1) ... [2019-10-13 19:53:38,630 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:38,649 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:38,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:38,851 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:39,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:39,022 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:39,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39 WrapperNode [2019-10-13 19:53:39,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:39,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:39,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:39,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:39,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (1/1) ... [2019-10-13 19:53:39,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (1/1) ... [2019-10-13 19:53:39,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (1/1) ... [2019-10-13 19:53:39,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (1/1) ... [2019-10-13 19:53:39,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (1/1) ... [2019-10-13 19:53:39,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (1/1) ... [2019-10-13 19:53:39,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (1/1) ... [2019-10-13 19:53:39,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:39,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:39,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:39,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:39,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (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 [2019-10-13 19:53:39,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:39,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:39,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2019-10-13 19:53:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2019-10-13 19:53:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2019-10-13 19:53:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2019-10-13 19:53:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:39,569 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:39,570 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-13 19:53:39,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:39 BoogieIcfgContainer [2019-10-13 19:53:39,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:39,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:39,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:39,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:39,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:38" (1/3) ... [2019-10-13 19:53:39,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7962f4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:39, skipping insertion in model container [2019-10-13 19:53:39,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:39" (2/3) ... [2019-10-13 19:53:39,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7962f4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:39, skipping insertion in model container [2019-10-13 19:53:39,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:39" (3/3) ... [2019-10-13 19:53:39,578 INFO L109 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion.c [2019-10-13 19:53:39,587 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:39,595 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:39,607 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:39,633 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:39,633 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:39,633 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:39,633 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:39,633 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:39,634 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:39,634 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:39,634 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-10-13 19:53:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 19:53:39,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:39,661 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:39,663 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:39,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1521704262, now seen corresponding path program 1 times [2019-10-13 19:53:39,678 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:39,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230492778] [2019-10-13 19:53:39,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:39,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:39,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:39,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230492778] [2019-10-13 19:53:39,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:39,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:39,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688576813] [2019-10-13 19:53:39,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:39,835 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:39,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:39,854 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2019-10-13 19:53:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:39,884 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2019-10-13 19:53:39,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:39,885 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-13 19:53:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:39,894 INFO L225 Difference]: With dead ends: 90 [2019-10-13 19:53:39,895 INFO L226 Difference]: Without dead ends: 44 [2019-10-13 19:53:39,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-13 19:53:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-10-13 19:53:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-13 19:53:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-10-13 19:53:39,941 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 18 [2019-10-13 19:53:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:39,941 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-10-13 19:53:39,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-10-13 19:53:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 19:53:39,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:39,943 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:39,944 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:39,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1816604960, now seen corresponding path program 1 times [2019-10-13 19:53:39,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:39,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19925262] [2019-10-13 19:53:39,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:39,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:39,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:40,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19925262] [2019-10-13 19:53:40,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:40,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:40,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510447880] [2019-10-13 19:53:40,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:40,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:40,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:40,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:40,011 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 3 states. [2019-10-13 19:53:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:40,072 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2019-10-13 19:53:40,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:40,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-13 19:53:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:40,074 INFO L225 Difference]: With dead ends: 61 [2019-10-13 19:53:40,074 INFO L226 Difference]: Without dead ends: 46 [2019-10-13 19:53:40,076 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-13 19:53:40,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-10-13 19:53:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-13 19:53:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2019-10-13 19:53:40,085 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2019-10-13 19:53:40,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:40,085 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2019-10-13 19:53:40,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:40,086 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2019-10-13 19:53:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 19:53:40,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:40,087 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:40,087 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1871306430, now seen corresponding path program 1 times [2019-10-13 19:53:40,088 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:40,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662153744] [2019-10-13 19:53:40,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:40,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:40,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:40,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662153744] [2019-10-13 19:53:40,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421785118] [2019-10-13 19:53:40,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:40,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:40,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:40,328 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:40,378 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:53:40,379 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-13 19:53:40,379 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992059192] [2019-10-13 19:53:40,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:40,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:40,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:53:40,381 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 6 states. [2019-10-13 19:53:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:40,581 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2019-10-13 19:53:40,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:40,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-13 19:53:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:40,585 INFO L225 Difference]: With dead ends: 99 [2019-10-13 19:53:40,585 INFO L226 Difference]: Without dead ends: 61 [2019-10-13 19:53:40,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:53:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-10-13 19:53:40,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2019-10-13 19:53:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-10-13 19:53:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2019-10-13 19:53:40,640 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 22 [2019-10-13 19:53:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:40,640 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2019-10-13 19:53:40,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2019-10-13 19:53:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 19:53:40,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:40,644 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:40,848 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:40,849 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:40,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:40,849 INFO L82 PathProgramCache]: Analyzing trace with hash -118364026, now seen corresponding path program 1 times [2019-10-13 19:53:40,849 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:40,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369897914] [2019-10-13 19:53:40,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:40,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:40,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 19:53:40,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369897914] [2019-10-13 19:53:40,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115982437] [2019-10-13 19:53:40,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:40,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:53:40,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:41,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:41,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [823342988] [2019-10-13 19:53:41,110 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 27 [2019-10-13 19:53:41,144 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:41,144 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:41,201 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:41,202 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 20 root evaluator evaluations with a maximum evaluation depth of 0. Performed 20 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 31 variables. [2019-10-13 19:53:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:41,206 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:41,247 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 70.83% of their original sizes. [2019-10-13 19:53:41,248 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:41,255 INFO L553 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-10-13 19:53:41,255 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:41,256 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:41,256 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6, 6] total 13 [2019-10-13 19:53:41,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749651657] [2019-10-13 19:53:41,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:41,257 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:41,258 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:41,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:41,259 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 3 states. [2019-10-13 19:53:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:41,262 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2019-10-13 19:53:41,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:41,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-13 19:53:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:41,262 INFO L225 Difference]: With dead ends: 49 [2019-10-13 19:53:41,262 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:41,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:41,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-10-13 19:53:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:41,264 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:41,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:41,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:41,468 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:41,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:41,560 INFO L446 ceAbstractionStarter]: At program point elem_existsENTRY(lines 16 22) the Hoare annotation is: true [2019-10-13 19:53:41,560 INFO L443 ceAbstractionStarter]: For program point elem_existsEXIT(lines 16 22) no Hoare annotation was computed. [2019-10-13 19:53:41,560 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-13 19:53:41,560 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2019-10-13 19:53:41,561 INFO L446 ceAbstractionStarter]: At program point L18-3(lines 18 20) the Hoare annotation is: true [2019-10-13 19:53:41,561 INFO L443 ceAbstractionStarter]: For program point L18-4(lines 18 20) no Hoare annotation was computed. [2019-10-13 19:53:41,561 INFO L443 ceAbstractionStarter]: For program point elem_existsFINAL(lines 16 22) no Hoare annotation was computed. [2019-10-13 19:53:41,561 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:41,561 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:41,561 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:41,561 INFO L446 ceAbstractionStarter]: At program point insertENTRY(lines 11 14) the Hoare annotation is: true [2019-10-13 19:53:41,562 INFO L443 ceAbstractionStarter]: For program point insertFINAL(lines 11 14) no Hoare annotation was computed. [2019-10-13 19:53:41,562 INFO L443 ceAbstractionStarter]: For program point insertEXIT(lines 11 14) no Hoare annotation was computed. [2019-10-13 19:53:41,562 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:41,562 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~SIZE~0 100000) [2019-10-13 19:53:41,563 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:41,563 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:41,563 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 24 68) no Hoare annotation was computed. [2019-10-13 19:53:41,563 INFO L439 ceAbstractionStarter]: At program point L65(line 65) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,563 INFO L443 ceAbstractionStarter]: For program point L65-1(line 65) no Hoare annotation was computed. [2019-10-13 19:53:41,564 INFO L443 ceAbstractionStarter]: For program point L61(lines 61 67) no Hoare annotation was computed. [2019-10-13 19:53:41,564 INFO L443 ceAbstractionStarter]: For program point L53(lines 24 68) no Hoare annotation was computed. [2019-10-13 19:53:41,564 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,564 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-10-13 19:53:41,564 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 24 68) no Hoare annotation was computed. [2019-10-13 19:53:41,564 INFO L443 ceAbstractionStarter]: For program point L46-2(lines 46 52) no Hoare annotation was computed. [2019-10-13 19:53:41,565 INFO L439 ceAbstractionStarter]: At program point L46-3(lines 46 52) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,565 INFO L443 ceAbstractionStarter]: For program point L46-4(lines 24 68) no Hoare annotation was computed. [2019-10-13 19:53:41,565 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2019-10-13 19:53:41,567 INFO L439 ceAbstractionStarter]: At program point L38-3(lines 38 43) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,567 INFO L443 ceAbstractionStarter]: For program point L38-4(lines 38 43) no Hoare annotation was computed. [2019-10-13 19:53:41,568 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 24 68) the Hoare annotation is: true [2019-10-13 19:53:41,568 INFO L443 ceAbstractionStarter]: For program point L63-2(lines 63 66) no Hoare annotation was computed. [2019-10-13 19:53:41,568 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 33) no Hoare annotation was computed. [2019-10-13 19:53:41,569 INFO L439 ceAbstractionStarter]: At program point L63-3(lines 63 66) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,569 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 33) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,569 INFO L443 ceAbstractionStarter]: For program point L30-4(lines 30 33) no Hoare annotation was computed. [2019-10-13 19:53:41,570 INFO L443 ceAbstractionStarter]: For program point L55-2(lines 55 58) no Hoare annotation was computed. [2019-10-13 19:53:41,570 INFO L439 ceAbstractionStarter]: At program point L55-3(lines 55 58) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,570 INFO L443 ceAbstractionStarter]: For program point L47(lines 47 51) no Hoare annotation was computed. [2019-10-13 19:53:41,577 INFO L439 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (not (= ~SIZE~0 100000)) [2019-10-13 19:53:41,577 INFO L443 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2019-10-13 19:53:41,577 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2019-10-13 19:53:41,577 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:41,577 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:41,577 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:41,578 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:41,578 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:41,578 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:41,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:41 BoogieIcfgContainer [2019-10-13 19:53:41,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:41,603 INFO L168 Benchmark]: Toolchain (without parser) took 2985.33 ms. Allocated memory was 138.9 MB in the beginning and 237.0 MB in the end (delta: 98.0 MB). Free memory was 103.3 MB in the beginning and 148.5 MB in the end (delta: -45.2 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:41,604 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 19:53:41,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.87 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 103.3 MB in the beginning and 181.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:41,609 INFO L168 Benchmark]: Boogie Preprocessor took 65.29 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:41,609 INFO L168 Benchmark]: RCFGBuilder took 479.58 ms. Allocated memory is still 203.9 MB. Free memory was 179.6 MB in the beginning and 158.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:41,611 INFO L168 Benchmark]: TraceAbstraction took 2023.90 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 158.5 MB in the beginning and 148.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:41,617 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 410.87 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 103.3 MB in the beginning and 181.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.29 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.58 ms. Allocated memory is still 203.9 MB. Free memory was 179.6 MB in the beginning and 158.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2023.90 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 158.5 MB in the beginning and 148.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: !(SIZE == 100000) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: !(SIZE == 100000) - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: !(SIZE == 100000) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(SIZE == 100000) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: !(SIZE == 100000) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 120 SDslu, 58 SDs, 0 SdLazy, 52 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 25 PreInvPairs, 25 NumberOfFragments, 42 HoareAnnotationTreeSize, 25 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 8523 SizeOfPredicates, 4 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 8/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 97, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.94, AVG_VARS_REMOVED_DURING_WEAKENING: 1.04, AVG_WEAKENED_CONJUNCTS: 0.44, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...