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/eca-rers2012/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:01:51,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:01:51,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:01:51,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:01:51,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:01:51,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:01:51,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:01:51,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:01:51,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:01:51,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:01:51,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:01:51,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:01:51,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:01:51,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:01:51,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:01:51,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:01:51,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:01:51,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:01:51,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:01:51,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:01:51,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:01:51,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:01:51,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:01:51,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:01:51,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:01:51,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:01:51,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:01:51,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:01:51,619 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 [2019-10-15 00:01:51,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:01:51,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:01:51,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:01:51,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:01:51,641 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:01:51,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:01:51,641 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:01:51,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:01:51,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:01:51,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:01:51,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:01:51,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:01:51,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:01:51,644 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:01:51,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:01:51,644 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:01:51,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:01:51,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:01:51,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:01:51,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:01:51,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:01:51,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:01:51,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:01:51,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:01:51,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:01:51,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:01:51,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:01:51,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:01:51,647 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 [2019-10-15 00:01:51,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:01:51,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:01:51,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:01:51,959 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:01:51,959 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:01:51,960 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2019-10-15 00:01:52,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b598cea/b35af7c8e2f24a1097b4cf8fb46cf551/FLAG65369c478 [2019-10-15 00:01:52,584 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:01:52,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2019-10-15 00:01:52,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b598cea/b35af7c8e2f24a1097b4cf8fb46cf551/FLAG65369c478 [2019-10-15 00:01:52,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b598cea/b35af7c8e2f24a1097b4cf8fb46cf551 [2019-10-15 00:01:52,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:01:52,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:01:52,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:01:52,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:01:52,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:01:52,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:01:52" (1/1) ... [2019-10-15 00:01:52,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17644812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:52, skipping insertion in model container [2019-10-15 00:01:52,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:01:52" (1/1) ... [2019-10-15 00:01:52,854 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:01:52,901 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:01:53,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:01:53,421 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:01:53,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:01:53,584 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:01:53,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53 WrapperNode [2019-10-15 00:01:53,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:01:53,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:01:53,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:01:53,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:01:53,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (1/1) ... [2019-10-15 00:01:53,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (1/1) ... [2019-10-15 00:01:53,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (1/1) ... [2019-10-15 00:01:53,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (1/1) ... [2019-10-15 00:01:53,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (1/1) ... [2019-10-15 00:01:53,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (1/1) ... [2019-10-15 00:01:53,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (1/1) ... [2019-10-15 00:01:53,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:01:53,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:01:53,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:01:53,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:01:53,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (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 [2019-10-15 00:01:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:01:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:01:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:01:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:01:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:01:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:01:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:01:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:01:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:01:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:01:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:01:55,045 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:01:55,045 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:01:55,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:01:55 BoogieIcfgContainer [2019-10-15 00:01:55,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:01:55,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:01:55,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:01:55,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:01:55,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:01:52" (1/3) ... [2019-10-15 00:01:55,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460d58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:01:55, skipping insertion in model container [2019-10-15 00:01:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:53" (2/3) ... [2019-10-15 00:01:55,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2460d58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:01:55, skipping insertion in model container [2019-10-15 00:01:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:01:55" (3/3) ... [2019-10-15 00:01:55,062 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2019-10-15 00:01:55,073 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:01:55,084 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:01:55,094 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:01:55,120 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:01:55,120 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:01:55,120 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:01:55,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:01:55,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:01:55,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:01:55,121 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:01:55,121 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:01:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-15 00:01:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-15 00:01:55,154 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:01:55,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:01:55,157 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:01:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:01:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1136502142, now seen corresponding path program 1 times [2019-10-15 00:01:55,172 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:01:55,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314925300] [2019-10-15 00:01:55,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:01:55,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:01:55,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:01:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:01:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:01:55,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314925300] [2019-10-15 00:01:55,459 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:01:55,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:01:55,459 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531261392] [2019-10-15 00:01:55,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:01:55,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:01:55,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:01:55,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:01:55,483 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-10-15 00:01:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:01:56,502 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2019-10-15 00:01:56,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:01:56,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-10-15 00:01:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:01:56,526 INFO L225 Difference]: With dead ends: 571 [2019-10-15 00:01:56,526 INFO L226 Difference]: Without dead ends: 294 [2019-10-15 00:01:56,536 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:01:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-15 00:01:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-10-15 00:01:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-15 00:01:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 421 transitions. [2019-10-15 00:01:56,607 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 421 transitions. Word has length 41 [2019-10-15 00:01:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:01:56,608 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 421 transitions. [2019-10-15 00:01:56,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:01:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 421 transitions. [2019-10-15 00:01:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 00:01:56,613 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:01:56,613 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:01:56,614 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:01:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:01:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1617063693, now seen corresponding path program 1 times [2019-10-15 00:01:56,615 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:01:56,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994883902] [2019-10-15 00:01:56,615 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:01:56,615 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:01:56,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:01:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:01:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:01:56,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994883902] [2019-10-15 00:01:56,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:01:56,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:01:56,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696455132] [2019-10-15 00:01:56,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:01:56,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:01:56,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:01:56,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:01:56,882 INFO L87 Difference]: Start difference. First operand 294 states and 421 transitions. Second operand 6 states. [2019-10-15 00:01:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:01:57,689 INFO L93 Difference]: Finished difference Result 741 states and 1061 transitions. [2019-10-15 00:01:57,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:01:57,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-10-15 00:01:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:01:57,694 INFO L225 Difference]: With dead ends: 741 [2019-10-15 00:01:57,694 INFO L226 Difference]: Without dead ends: 453 [2019-10-15 00:01:57,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:01:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-15 00:01:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2019-10-15 00:01:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-15 00:01:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 606 transitions. [2019-10-15 00:01:57,742 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 606 transitions. Word has length 110 [2019-10-15 00:01:57,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:01:57,743 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 606 transitions. [2019-10-15 00:01:57,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:01:57,743 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 606 transitions. [2019-10-15 00:01:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 00:01:57,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:01:57,748 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:01:57,749 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:01:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:01:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash -430353343, now seen corresponding path program 1 times [2019-10-15 00:01:57,750 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:01:57,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460902379] [2019-10-15 00:01:57,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:01:57,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:01:57,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:01:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:01:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:01:57,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460902379] [2019-10-15 00:01:57,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998468799] [2019-10-15 00:01:57,903 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 [2019-10-15 00:01:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:01:57,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 00:01:58,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:01:58,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:01:58,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:02:02,004 WARN L191 SmtUtils]: Spent 3.79 s on a formula simplification that was a NOOP. DAG size: 33 [2019-10-15 00:02:02,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:02:02,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:02:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:02:02,287 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:02:02,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:02:02,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:02:02,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:02:02,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:02:02,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:02:02,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:02:03,662 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 71 DAG size of output: 20 [2019-10-15 00:02:03,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:02:03,873 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:03,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:03,974 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,019 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,063 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,113 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,155 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,191 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,243 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,299 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,346 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,388 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,459 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,525 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,569 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,632 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,666 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,754 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,795 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,836 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,917 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:04,957 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,011 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,086 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,132 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,182 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,228 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,320 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,373 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,523 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,646 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,771 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,805 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,840 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,883 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,925 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:05,969 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,014 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,064 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,104 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,147 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,190 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,235 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,335 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,374 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,461 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,557 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,608 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,661 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,703 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,785 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,827 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,869 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,913 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,954 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:06,994 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:07,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-10-15 00:02:07,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 00:02:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:02:07,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2132285602] [2019-10-15 00:02:07,250 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 121 [2019-10-15 00:02:07,291 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:02:07,291 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 00:02:19,250 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-15 00:02:30,149 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 00:02:30,151 INFO L272 AbstractInterpreter]: Visited 86 different actions 165 times. Merged at 3 different actions 3 times. Never widened. Performed 299 root evaluator evaluations with a maximum evaluation depth of 16. Performed 299 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-10-15 00:02:30,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:02:30,155 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates