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/Problem12_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:05:50,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:05:50,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:05:50,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:05:50,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:05:50,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:05:50,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:05:50,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:05:50,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:05:50,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:05:50,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:05:50,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:05:50,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:05:50,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:05:50,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:05:50,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:05:50,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:05:50,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:05:50,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:05:50,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:05:50,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:05:50,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:05:50,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:05:50,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:05:50,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 20:05:50,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:05:50,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:05:50,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:05:50,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:05:50,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:05:50,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:05:50,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:05:50,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:05:50,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:05:50,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:05:50,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:05:50,644 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 20:05:50,676 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:05:50,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:05:50,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:05:50,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:05:50,681 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:05:50,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:05:50,682 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:05:50,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:05:50,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:05:50,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:05:50,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:05:50,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:05:50,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:05:50,684 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:05:50,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:05:50,685 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:05:50,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:05:50,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:05:50,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:05:50,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:05:50,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:05:50,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:05:50,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:05:50,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:05:50,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:05:50,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:05:50,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:05:50,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:05:50,688 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 20:05:50,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:05:51,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:05:51,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:05:51,013 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:05:51,013 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:05:51,014 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33.c [2019-10-13 20:05:51,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7277d5617/e4b33967932643c89355555e66912080/FLAG030dfd97d [2019-10-13 20:05:51,950 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:05:51,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label33.c [2019-10-13 20:05:51,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7277d5617/e4b33967932643c89355555e66912080/FLAG030dfd97d [2019-10-13 20:05:52,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7277d5617/e4b33967932643c89355555e66912080 [2019-10-13 20:05:52,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:05:52,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:05:52,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:05:52,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:05:52,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:05:52,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:52" (1/1) ... [2019-10-13 20:05:52,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b073ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:52, skipping insertion in model container [2019-10-13 20:05:52,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:52" (1/1) ... [2019-10-13 20:05:52,549 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:05:52,700 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:05:54,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:05:54,194 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:05:54,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:05:54,962 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:05:54,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54 WrapperNode [2019-10-13 20:05:54,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:05:54,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:05:54,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:05:54,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:05:54,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (1/1) ... [2019-10-13 20:05:54,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (1/1) ... [2019-10-13 20:05:55,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (1/1) ... [2019-10-13 20:05:55,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (1/1) ... [2019-10-13 20:05:55,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (1/1) ... [2019-10-13 20:05:55,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (1/1) ... [2019-10-13 20:05:55,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (1/1) ... [2019-10-13 20:05:55,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:05:55,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:05:55,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:05:55,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:05:55,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (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 20:05:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:05:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:05:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 20:05:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 20:05:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 20:05:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 20:05:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:05:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 20:05:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 20:05:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 20:05:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 20:05:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:05:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:05:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:05:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:05:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:05:55,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:05:59,999 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:05:59,999 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 20:06:00,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:00 BoogieIcfgContainer [2019-10-13 20:06:00,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:06:00,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:06:00,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:06:00,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:06:00,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:05:52" (1/3) ... [2019-10-13 20:06:00,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d8af9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:00, skipping insertion in model container [2019-10-13 20:06:00,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:54" (2/3) ... [2019-10-13 20:06:00,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d8af9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:06:00, skipping insertion in model container [2019-10-13 20:06:00,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:06:00" (3/3) ... [2019-10-13 20:06:00,017 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2019-10-13 20:06:00,028 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:06:00,037 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:06:00,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:06:00,089 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:06:00,089 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:06:00,089 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:06:00,089 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:06:00,089 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:06:00,089 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:06:00,090 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:06:00,090 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:06:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-13 20:06:00,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 20:06:00,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:00,205 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] [2019-10-13 20:06:00,207 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1837034062, now seen corresponding path program 1 times [2019-10-13 20:06:00,220 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:00,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393057587] [2019-10-13 20:06:00,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:00,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:00,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:00,539 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 20:06:00,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393057587] [2019-10-13 20:06:00,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:00,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:06:00,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165448945] [2019-10-13 20:06:00,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:06:00,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:06:00,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:00,565 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2019-10-13 20:06:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:09,613 INFO L93 Difference]: Finished difference Result 3230 states and 6251 transitions. [2019-10-13 20:06:09,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:06:09,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2019-10-13 20:06:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:09,657 INFO L225 Difference]: With dead ends: 3230 [2019-10-13 20:06:09,658 INFO L226 Difference]: Without dead ends: 2309 [2019-10-13 20:06:09,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-10-13 20:06:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2019-10-13 20:06:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2019-10-13 20:06:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3821 transitions. [2019-10-13 20:06:09,852 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3821 transitions. Word has length 55 [2019-10-13 20:06:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:09,853 INFO L462 AbstractCegarLoop]: Abstraction has 2309 states and 3821 transitions. [2019-10-13 20:06:09,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:06:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3821 transitions. [2019-10-13 20:06:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 20:06:09,862 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:09,862 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, 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] [2019-10-13 20:06:09,863 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:09,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1114761445, now seen corresponding path program 1 times [2019-10-13 20:06:09,863 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:09,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707397991] [2019-10-13 20:06:09,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:09,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:09,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:10,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707397991] [2019-10-13 20:06:10,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:10,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 20:06:10,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627285644] [2019-10-13 20:06:10,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 20:06:10,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:10,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 20:06:10,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 20:06:10,155 INFO L87 Difference]: Start difference. First operand 2309 states and 3821 transitions. Second operand 6 states. [2019-10-13 20:06:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:16,834 INFO L93 Difference]: Finished difference Result 7045 states and 11809 transitions. [2019-10-13 20:06:16,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:06:16,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2019-10-13 20:06:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:16,871 INFO L225 Difference]: With dead ends: 7045 [2019-10-13 20:06:16,871 INFO L226 Difference]: Without dead ends: 4742 [2019-10-13 20:06:16,878 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 [2019-10-13 20:06:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2019-10-13 20:06:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4697. [2019-10-13 20:06:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4697 states. [2019-10-13 20:06:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7461 transitions. [2019-10-13 20:06:17,033 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7461 transitions. Word has length 154 [2019-10-13 20:06:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:17,034 INFO L462 AbstractCegarLoop]: Abstraction has 4697 states and 7461 transitions. [2019-10-13 20:06:17,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 20:06:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7461 transitions. [2019-10-13 20:06:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 20:06:17,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:17,044 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:06:17,045 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1950696993, now seen corresponding path program 1 times [2019-10-13 20:06:17,046 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:17,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846520891] [2019-10-13 20:06:17,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:17,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:17,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:06:17,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846520891] [2019-10-13 20:06:17,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:06:17,218 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:06:17,218 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523716632] [2019-10-13 20:06:17,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:06:17,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:17,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:06:17,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:17,220 INFO L87 Difference]: Start difference. First operand 4697 states and 7461 transitions. Second operand 4 states. [2019-10-13 20:06:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:06:25,007 INFO L93 Difference]: Finished difference Result 18736 states and 30951 transitions. [2019-10-13 20:06:25,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:06:25,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2019-10-13 20:06:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:06:25,080 INFO L225 Difference]: With dead ends: 18736 [2019-10-13 20:06:25,081 INFO L226 Difference]: Without dead ends: 14045 [2019-10-13 20:06:25,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:06:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14045 states. [2019-10-13 20:06:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14045 to 14045. [2019-10-13 20:06:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14045 states. [2019-10-13 20:06:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 22285 transitions. [2019-10-13 20:06:25,488 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 22285 transitions. Word has length 204 [2019-10-13 20:06:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:06:25,490 INFO L462 AbstractCegarLoop]: Abstraction has 14045 states and 22285 transitions. [2019-10-13 20:06:25,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:06:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 22285 transitions. [2019-10-13 20:06:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 20:06:25,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:06:25,498 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:06:25,498 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:06:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:06:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash -972211546, now seen corresponding path program 1 times [2019-10-13 20:06:25,499 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:06:25,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881883431] [2019-10-13 20:06:25,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:25,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:06:25,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:06:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 20:06:25,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881883431] [2019-10-13 20:06:25,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205785707] [2019-10-13 20:06:25,704 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 20:06:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:06:25,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 20:06:25,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:06:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 20:06:26,004 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:06:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 20:06:26,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 20:06:26,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-13 20:06:26,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096557368] [2019-10-13 20:06:26,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:06:26,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:06:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:06:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-13 20:06:26,178 INFO L87 Difference]: Start difference. First operand 14045 states and 22285 transitions. Second operand 5 states.