/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:48:59,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:48:59,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:48:59,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:48:59,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:48:59,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:48:59,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:48:59,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:48:59,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:48:59,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:48:59,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:48:59,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:48:59,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:48:59,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:48:59,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:48:59,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:48:59,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:48:59,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:48:59,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:48:59,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:48:59,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:48:59,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:48:59,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:48:59,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:48:59,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:48:59,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:48:59,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:48:59,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:48:59,527 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 [2019-11-06 22:48:59,565 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:48:59,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:48:59,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:48:59,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:48:59,567 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:48:59,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:48:59,568 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:48:59,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:48:59,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:48:59,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:48:59,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:48:59,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:48:59,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:48:59,569 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:48:59,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:48:59,569 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:48:59,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:48:59,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:48:59,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:48:59,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:48:59,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:48:59,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:48:59,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:48:59,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:48:59,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:48:59,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:48:59,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:48:59,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:48:59,574 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 [2019-11-06 22:48:59,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:48:59,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:48:59,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:48:59,933 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:48:59,933 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:48:59,934 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2019-11-06 22:49:00,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8312162f1/dfca01e4383644f1ae17e0e746f5e288/FLAG404bbe3c6 [2019-11-06 22:49:00,709 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:49:00,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2019-11-06 22:49:00,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8312162f1/dfca01e4383644f1ae17e0e746f5e288/FLAG404bbe3c6 [2019-11-06 22:49:00,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8312162f1/dfca01e4383644f1ae17e0e746f5e288 [2019-11-06 22:49:00,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:49:00,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:49:00,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:49:00,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:49:00,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:49:00,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:00" (1/1) ... [2019-11-06 22:49:00,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a85e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:00, skipping insertion in model container [2019-11-06 22:49:00,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:00" (1/1) ... [2019-11-06 22:49:00,873 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:49:01,034 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:49:02,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:49:02,633 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:49:03,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:49:03,387 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:49:03,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03 WrapperNode [2019-11-06 22:49:03,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:49:03,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:49:03,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:49:03,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:49:03,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (1/1) ... [2019-11-06 22:49:03,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (1/1) ... [2019-11-06 22:49:03,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (1/1) ... [2019-11-06 22:49:03,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (1/1) ... [2019-11-06 22:49:03,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (1/1) ... [2019-11-06 22:49:03,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (1/1) ... [2019-11-06 22:49:03,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (1/1) ... [2019-11-06 22:49:03,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:49:03,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:49:03,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:49:03,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:49:03,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (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 [2019-11-06 22:49:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:49:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:49:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:49:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:49:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:49:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:49:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:49:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:49:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:49:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:49:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:49:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:49:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:49:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:49:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:49:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:49:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:49:08,474 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:49:08,475 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:49:08,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:08 BoogieIcfgContainer [2019-11-06 22:49:08,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:49:08,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:49:08,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:49:08,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:49:08,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:00" (1/3) ... [2019-11-06 22:49:08,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce61fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:08, skipping insertion in model container [2019-11-06 22:49:08,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:03" (2/3) ... [2019-11-06 22:49:08,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce61fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:08, skipping insertion in model container [2019-11-06 22:49:08,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:08" (3/3) ... [2019-11-06 22:49:08,496 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label29.c [2019-11-06 22:49:08,507 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:49:08,514 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:49:08,525 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:49:08,559 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:49:08,559 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:49:08,559 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:49:08,560 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:49:08,560 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:49:08,560 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:49:08,560 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:49:08,560 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:49:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 22:49:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 22:49:08,602 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:08,603 INFO L410 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] [2019-11-06 22:49:08,605 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:08,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1364317718, now seen corresponding path program 1 times [2019-11-06 22:49:08,621 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:08,621 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685501259] [2019-11-06 22:49:08,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:09,068 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685501259] [2019-11-06 22:49:09,070 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:09,070 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:49:09,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536755938] [2019-11-06 22:49:09,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:49:09,080 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:49:09,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:49:09,098 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2019-11-06 22:49:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:17,426 INFO L93 Difference]: Finished difference Result 3230 states and 6251 transitions. [2019-11-06 22:49:17,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:49:17,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2019-11-06 22:49:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:17,469 INFO L225 Difference]: With dead ends: 3230 [2019-11-06 22:49:17,469 INFO L226 Difference]: Without dead ends: 2309 [2019-11-06 22:49:17,478 INFO L630 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 [2019-11-06 22:49:17,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-11-06 22:49:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2019-11-06 22:49:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2019-11-06 22:49:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3659 transitions. [2019-11-06 22:49:17,643 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3659 transitions. Word has length 61 [2019-11-06 22:49:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:17,644 INFO L462 AbstractCegarLoop]: Abstraction has 2309 states and 3659 transitions. [2019-11-06 22:49:17,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:49:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3659 transitions. [2019-11-06 22:49:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-06 22:49:17,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:17,652 INFO L410 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, 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] [2019-11-06 22:49:17,652 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:17,653 INFO L82 PathProgramCache]: Analyzing trace with hash 921108326, now seen corresponding path program 1 times [2019-11-06 22:49:17,653 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:17,653 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543839915] [2019-11-06 22:49:17,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:17,918 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543839915] [2019-11-06 22:49:17,918 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:17,919 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:49:17,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567336481] [2019-11-06 22:49:17,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:49:17,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:17,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:49:17,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:49:17,927 INFO L87 Difference]: Start difference. First operand 2309 states and 3659 transitions. Second operand 5 states. [2019-11-06 22:49:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:25,038 INFO L93 Difference]: Finished difference Result 7017 states and 11218 transitions. [2019-11-06 22:49:25,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:49:25,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-11-06 22:49:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:25,072 INFO L225 Difference]: With dead ends: 7017 [2019-11-06 22:49:25,072 INFO L226 Difference]: Without dead ends: 4714 [2019-11-06 22:49:25,079 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2019-11-06 22:49:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 4671. [2019-11-06 22:49:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4671 states. [2019-11-06 22:49:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 6780 transitions. [2019-11-06 22:49:25,255 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 6780 transitions. Word has length 141 [2019-11-06 22:49:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:25,258 INFO L462 AbstractCegarLoop]: Abstraction has 4671 states and 6780 transitions. [2019-11-06 22:49:25,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:49:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 6780 transitions. [2019-11-06 22:49:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-06 22:49:25,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:25,268 INFO L410 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, 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] [2019-11-06 22:49:25,268 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:25,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2074427823, now seen corresponding path program 1 times [2019-11-06 22:49:25,270 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:25,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786118298] [2019-11-06 22:49:25,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:25,513 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786118298] [2019-11-06 22:49:25,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:25,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:25,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377186558] [2019-11-06 22:49:25,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:25,517 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:25,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:25,518 INFO L87 Difference]: Start difference. First operand 4671 states and 6780 transitions. Second operand 6 states. [2019-11-06 22:49:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:33,008 INFO L93 Difference]: Finished difference Result 14312 states and 21357 transitions. [2019-11-06 22:49:33,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:49:33,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2019-11-06 22:49:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:33,059 INFO L225 Difference]: With dead ends: 14312 [2019-11-06 22:49:33,059 INFO L226 Difference]: Without dead ends: 9647 [2019-11-06 22:49:33,071 INFO L630 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 [2019-11-06 22:49:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9647 states. [2019-11-06 22:49:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9647 to 9523. [2019-11-06 22:49:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9523 states. [2019-11-06 22:49:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9523 states to 9523 states and 13580 transitions. [2019-11-06 22:49:33,350 INFO L78 Accepts]: Start accepts. Automaton has 9523 states and 13580 transitions. Word has length 174 [2019-11-06 22:49:33,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:33,351 INFO L462 AbstractCegarLoop]: Abstraction has 9523 states and 13580 transitions. [2019-11-06 22:49:33,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:49:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 9523 states and 13580 transitions. [2019-11-06 22:49:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-06 22:49:33,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:33,356 INFO L410 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, 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] [2019-11-06 22:49:33,356 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:33,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:33,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1134260862, now seen corresponding path program 1 times [2019-11-06 22:49:33,357 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:33,358 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889124319] [2019-11-06 22:49:33,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:33,584 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889124319] [2019-11-06 22:49:33,584 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:33,584 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:33,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014394412] [2019-11-06 22:49:33,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:33,586 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:33,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:33,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:33,586 INFO L87 Difference]: Start difference. First operand 9523 states and 13580 transitions. Second operand 6 states.