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/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:54:31,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:54:31,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:54:31,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:54:31,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:54:31,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:54:31,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:54:31,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:54:31,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:54:31,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:54:31,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:54:31,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:54:31,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:54:31,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:54:31,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:54:31,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:54:31,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:54:31,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:54:31,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:54:31,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:54:31,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:54:31,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:54:31,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:54:31,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:54:31,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:54:31,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:54:31,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:54:31,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:54:31,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:54:31,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:54:31,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:54:31,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:54:31,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:54:31,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:54:31,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:54:31,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:54:31,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:54:31,680 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:54:31,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:54:31,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:54:31,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:54:31,682 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:54:31,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:54:31,682 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:54:31,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:54:31,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:54:31,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:54:31,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:54:31,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:54:31,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:54:31,684 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:54:31,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:54:31,684 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:54:31,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:54:31,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:54:31,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:54:31,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:54:31,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:54:31,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:54:31,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:54:31,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:54:31,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:54:31,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:54:31,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:54:31,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:54:31,686 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 [2019-10-14 23:54:31,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:54:31,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:54:31,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:54:31,980 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:54:31,981 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:54:31,981 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2019-10-14 23:54:32,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92af7f638/b66d094f0dec493bb4a2529df44907cd/FLAG34b63978a [2019-10-14 23:54:32,619 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:54:32,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2019-10-14 23:54:32,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92af7f638/b66d094f0dec493bb4a2529df44907cd/FLAG34b63978a [2019-10-14 23:54:32,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92af7f638/b66d094f0dec493bb4a2529df44907cd [2019-10-14 23:54:32,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:54:32,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:54:32,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:54:32,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:54:32,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:54:32,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:54:32" (1/1) ... [2019-10-14 23:54:32,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343d4392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:32, skipping insertion in model container [2019-10-14 23:54:32,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:54:32" (1/1) ... [2019-10-14 23:54:32,965 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:54:33,018 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:54:33,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:54:33,565 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:54:33,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:54:33,720 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:54:33,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33 WrapperNode [2019-10-14 23:54:33,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:54:33,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:54:33,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:54:33,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:54:33,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... [2019-10-14 23:54:33,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... [2019-10-14 23:54:33,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... [2019-10-14 23:54:33,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... [2019-10-14 23:54:33,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... [2019-10-14 23:54:33,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... [2019-10-14 23:54:33,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... [2019-10-14 23:54:33,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:54:33,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:54:33,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:54:33,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:54:33,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:54:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:54:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:54:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:54:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:54:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:54:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:54:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:54:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:54:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:54:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:54:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:54:35,170 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:54:35,171 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:54:35,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:54:35 BoogieIcfgContainer [2019-10-14 23:54:35,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:54:35,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:54:35,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:54:35,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:54:35,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:54:32" (1/3) ... [2019-10-14 23:54:35,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a430ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:54:35, skipping insertion in model container [2019-10-14 23:54:35,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:54:33" (2/3) ... [2019-10-14 23:54:35,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a430ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:54:35, skipping insertion in model container [2019-10-14 23:54:35,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:54:35" (3/3) ... [2019-10-14 23:54:35,187 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2019-10-14 23:54:35,199 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:54:35,208 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:54:35,219 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:54:35,250 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:54:35,250 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:54:35,250 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:54:35,250 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:54:35,253 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:54:35,253 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:54:35,253 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:54:35,253 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:54:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-14 23:54:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-14 23:54:35,299 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:35,300 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, 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] [2019-10-14 23:54:35,302 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:35,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1692915649, now seen corresponding path program 1 times [2019-10-14 23:54:35,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:35,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526336356] [2019-10-14 23:54:35,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:35,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:35,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:35,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526336356] [2019-10-14 23:54:35,745 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:35,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:54:35,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138403517] [2019-10-14 23:54:35,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:54:35,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:54:35,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:54:35,769 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-14 23:54:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:36,677 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2019-10-14 23:54:36,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:54:36,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2019-10-14 23:54:36,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:36,706 INFO L225 Difference]: With dead ends: 547 [2019-10-14 23:54:36,707 INFO L226 Difference]: Without dead ends: 278 [2019-10-14 23:54:36,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:54:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-14 23:54:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-14 23:54:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-14 23:54:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 400 transitions. [2019-10-14 23:54:36,786 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 400 transitions. Word has length 91 [2019-10-14 23:54:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:36,787 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 400 transitions. [2019-10-14 23:54:36,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:54:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 400 transitions. [2019-10-14 23:54:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-14 23:54:36,793 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:36,793 INFO L380 BasicCegarLoop]: trace histogram [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, 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] [2019-10-14 23:54:36,794 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:36,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:36,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1768869960, now seen corresponding path program 1 times [2019-10-14 23:54:36,794 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:36,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611131385] [2019-10-14 23:54:36,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:36,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:36,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:36,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611131385] [2019-10-14 23:54:36,901 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:36,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:54:36,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997722403] [2019-10-14 23:54:36,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:54:36,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:36,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:54:36,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:54:36,905 INFO L87 Difference]: Start difference. First operand 278 states and 400 transitions. Second operand 6 states. [2019-10-14 23:54:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:37,651 INFO L93 Difference]: Finished difference Result 703 states and 1026 transitions. [2019-10-14 23:54:37,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:54:37,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-14 23:54:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:37,659 INFO L225 Difference]: With dead ends: 703 [2019-10-14 23:54:37,659 INFO L226 Difference]: Without dead ends: 431 [2019-10-14 23:54:37,661 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 [2019-10-14 23:54:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-10-14 23:54:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2019-10-14 23:54:37,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-14 23:54:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2019-10-14 23:54:37,695 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 101 [2019-10-14 23:54:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:37,695 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2019-10-14 23:54:37,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:54:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2019-10-14 23:54:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-14 23:54:37,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:37,699 INFO L380 BasicCegarLoop]: trace histogram [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, 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] [2019-10-14 23:54:37,699 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1027824070, now seen corresponding path program 1 times [2019-10-14 23:54:37,700 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:37,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452707609] [2019-10-14 23:54:37,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:37,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:37,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:37,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452707609] [2019-10-14 23:54:37,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:37,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:54:37,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767382411] [2019-10-14 23:54:37,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:54:37,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:37,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:54:37,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:54:37,876 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand 3 states. [2019-10-14 23:54:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:38,336 INFO L93 Difference]: Finished difference Result 1241 states and 1781 transitions. [2019-10-14 23:54:38,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:54:38,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-14 23:54:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:38,344 INFO L225 Difference]: With dead ends: 1241 [2019-10-14 23:54:38,344 INFO L226 Difference]: Without dead ends: 828 [2019-10-14 23:54:38,345 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:54:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2019-10-14 23:54:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2019-10-14 23:54:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2019-10-14 23:54:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1140 transitions. [2019-10-14 23:54:38,386 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1140 transitions. Word has length 102 [2019-10-14 23:54:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:38,387 INFO L462 AbstractCegarLoop]: Abstraction has 828 states and 1140 transitions. [2019-10-14 23:54:38,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:54:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1140 transitions. [2019-10-14 23:54:38,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:54:38,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:38,394 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:54:38,395 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:38,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:38,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1016446174, now seen corresponding path program 1 times [2019-10-14 23:54:38,395 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:38,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302166445] [2019-10-14 23:54:38,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:38,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:38,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:38,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302166445] [2019-10-14 23:54:38,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:54:38,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:54:38,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495416081] [2019-10-14 23:54:38,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:54:38,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:54:38,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:54:38,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:54:38,503 INFO L87 Difference]: Start difference. First operand 828 states and 1140 transitions. Second operand 6 states. [2019-10-14 23:54:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:54:39,298 INFO L93 Difference]: Finished difference Result 2250 states and 3291 transitions. [2019-10-14 23:54:39,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:54:39,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-10-14 23:54:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:54:39,309 INFO L225 Difference]: With dead ends: 2250 [2019-10-14 23:54:39,309 INFO L226 Difference]: Without dead ends: 1428 [2019-10-14 23:54:39,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:54:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2019-10-14 23:54:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1400. [2019-10-14 23:54:39,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2019-10-14 23:54:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1852 transitions. [2019-10-14 23:54:39,369 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1852 transitions. Word has length 116 [2019-10-14 23:54:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:54:39,370 INFO L462 AbstractCegarLoop]: Abstraction has 1400 states and 1852 transitions. [2019-10-14 23:54:39,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:54:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1852 transitions. [2019-10-14 23:54:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-14 23:54:39,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:54:39,376 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:54:39,376 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:54:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:54:39,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1605716217, now seen corresponding path program 1 times [2019-10-14 23:54:39,377 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:54:39,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432357306] [2019-10-14 23:54:39,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:39,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:54:39,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:54:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:39,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432357306] [2019-10-14 23:54:39,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67152739] [2019-10-14 23:54:39,507 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 [2019-10-14 23:54:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:54:39,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:54:39,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:54:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:39,677 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:54:39,819 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:54:39,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1141322117] [2019-10-14 23:54:39,826 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 134 [2019-10-14 23:54:39,889 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:54:39,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)