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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 21:15:51,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 21:15:51,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 21:15:51,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 21:15:51,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 21:15:51,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 21:15:51,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 21:15:51,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 21:15:51,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 21:15:51,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 21:15:51,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 21:15:51,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 21:15:51,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 21:15:51,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 21:15:51,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 21:15:51,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 21:15:51,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 21:15:51,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 21:15:51,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 21:15:51,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 21:15:51,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 21:15:51,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 21:15:51,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 21:15:51,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 21:15:51,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 21:15:51,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 21:15:51,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 21:15:51,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 21:15:51,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 21:15:51,672 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 21:15:51,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 21:15:51,673 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 21:15:51,673 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 21:15:51,673 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 21:15:51,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 21:15:51,673 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 21:15:51,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 21:15:51,674 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 21:15:51,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 21:15:51,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 21:15:51,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 21:15:51,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 21:15:51,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 21:15:51,675 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 21:15:51,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 21:15:51,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 21:15:51,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 21:15:51,676 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 21:15:51,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 21:15:51,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 21:15:51,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 21:15:51,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 21:15:51,677 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 21:15:51,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 21:15:51,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 21:15:51,678 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 21:15:51,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 21:15:51,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 21:15:51,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 21:15:51,724 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 21:15:51,725 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 21:15:51,725 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label09.c [2019-10-02 21:15:51,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf1d0dcf/6aebc1b90a8449fa96031ef7cf78019d/FLAGac1445db6 [2019-10-02 21:15:52,508 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 21:15:52,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label09.c [2019-10-02 21:15:52,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf1d0dcf/6aebc1b90a8449fa96031ef7cf78019d/FLAGac1445db6 [2019-10-02 21:15:52,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf1d0dcf/6aebc1b90a8449fa96031ef7cf78019d [2019-10-02 21:15:52,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 21:15:52,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 21:15:52,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 21:15:52,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 21:15:52,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 21:15:52,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:15:52" (1/1) ... [2019-10-02 21:15:52,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:52, skipping insertion in model container [2019-10-02 21:15:52,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:15:52" (1/1) ... [2019-10-02 21:15:52,674 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 21:15:52,771 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 21:15:53,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:15:53,512 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 21:15:53,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:15:53,884 INFO L192 MainTranslator]: Completed translation [2019-10-02 21:15:53,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53 WrapperNode [2019-10-02 21:15:53,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 21:15:53,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 21:15:53,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 21:15:53,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 21:15:53,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... [2019-10-02 21:15:53,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... [2019-10-02 21:15:53,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... [2019-10-02 21:15:53,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... [2019-10-02 21:15:54,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... [2019-10-02 21:15:54,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... [2019-10-02 21:15:54,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... [2019-10-02 21:15:54,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 21:15:54,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 21:15:54,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 21:15:54,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 21:15:54,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 21:15:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 21:15:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 21:15:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 21:15:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 21:15:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 21:15:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 21:15:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 21:15:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 21:15:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 21:15:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 21:15:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 21:15:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 21:15:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 21:15:56,803 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 21:15:56,803 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 21:15:56,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:15:56 BoogieIcfgContainer [2019-10-02 21:15:56,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 21:15:56,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 21:15:56,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 21:15:56,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 21:15:56,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 09:15:52" (1/3) ... [2019-10-02 21:15:56,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0bde49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:15:56, skipping insertion in model container [2019-10-02 21:15:56,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:15:53" (2/3) ... [2019-10-02 21:15:56,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0bde49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:15:56, skipping insertion in model container [2019-10-02 21:15:56,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:15:56" (3/3) ... [2019-10-02 21:15:56,817 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label09.c [2019-10-02 21:15:56,828 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 21:15:56,842 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 21:15:56,863 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 21:15:56,905 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 21:15:56,906 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 21:15:56,906 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 21:15:56,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 21:15:56,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 21:15:56,906 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 21:15:56,907 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 21:15:56,907 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 21:15:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-02 21:15:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-02 21:15:56,974 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:15:56,975 INFO L411 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] [2019-10-02 21:15:56,979 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:15:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:15:56,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1688658390, now seen corresponding path program 1 times [2019-10-02 21:15:56,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:15:57,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:15:57,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:15:57,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:15:57,065 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:15:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:15:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:15:57,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:15:57,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 21:15:57,431 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:15:57,437 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 21:15:57,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 21:15:57,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 21:15:57,457 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 3 states. [2019-10-02 21:16:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:16:00,148 INFO L93 Difference]: Finished difference Result 750 states and 1301 transitions. [2019-10-02 21:16:00,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 21:16:00,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-02 21:16:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:16:00,175 INFO L225 Difference]: With dead ends: 750 [2019-10-02 21:16:00,176 INFO L226 Difference]: Without dead ends: 682 [2019-10-02 21:16:00,177 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 21:16:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-02 21:16:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-02 21:16:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-02 21:16:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1184 transitions. [2019-10-02 21:16:00,293 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1184 transitions. Word has length 53 [2019-10-02 21:16:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:16:00,294 INFO L475 AbstractCegarLoop]: Abstraction has 682 states and 1184 transitions. [2019-10-02 21:16:00,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 21:16:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1184 transitions. [2019-10-02 21:16:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-02 21:16:00,313 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:16:00,316 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:16:00,316 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:16:00,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:16:00,317 INFO L82 PathProgramCache]: Analyzing trace with hash -956532517, now seen corresponding path program 1 times [2019-10-02 21:16:00,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:16:00,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:16:00,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:16:00,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:16:00,322 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:16:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:16:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:16:00,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:16:00,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 21:16:00,485 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:16:00,487 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 21:16:00,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 21:16:00,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 21:16:00,488 INFO L87 Difference]: Start difference. First operand 682 states and 1184 transitions. Second operand 5 states. [2019-10-02 21:16:03,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:16:03,657 INFO L93 Difference]: Finished difference Result 1385 states and 2136 transitions. [2019-10-02 21:16:03,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 21:16:03,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-02 21:16:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:16:03,676 INFO L225 Difference]: With dead ends: 1385 [2019-10-02 21:16:03,679 INFO L226 Difference]: Without dead ends: 1385 [2019-10-02 21:16:03,680 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 21:16:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-10-02 21:16:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1377. [2019-10-02 21:16:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2019-10-02 21:16:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2120 transitions. [2019-10-02 21:16:03,758 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2120 transitions. Word has length 124 [2019-10-02 21:16:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:16:03,759 INFO L475 AbstractCegarLoop]: Abstraction has 1377 states and 2120 transitions. [2019-10-02 21:16:03,759 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 21:16:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2120 transitions. [2019-10-02 21:16:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-02 21:16:03,765 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:16:03,766 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:16:03,766 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:16:03,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:16:03,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1084580230, now seen corresponding path program 1 times [2019-10-02 21:16:03,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:16:03,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:16:03,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:16:03,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:16:03,769 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:16:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:16:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 21:16:04,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 21:16:04,002 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 21:16:04,003 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2019-10-02 21:16:04,006 INFO L207 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [511], [513], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [1552], [1556], [1565], [1569], [1571], [1578], [1579], [1580], [1582], [1583] [2019-10-02 21:16:04,094 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 21:16:04,094 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 21:16:10,169 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 21:16:10,171 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Performed 247 root evaluator evaluations with a maximum evaluation depth of 14. Performed 247 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 21:16:10,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:16:10,176 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 21:16:13,309 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 78.63% of their original sizes. [2019-10-02 21:16:13,310 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 21:16:13,397 INFO L420 sIntCurrentIteration]: We unified 152 AI predicates to 152 [2019-10-02 21:16:13,398 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 21:16:13,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 21:16:13,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2019-10-02 21:16:13,399 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:16:13,400 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 21:16:13,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 21:16:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-02 21:16:13,401 INFO L87 Difference]: Start difference. First operand 1377 states and 2120 transitions. Second operand 11 states. [2019-10-02 21:16:33,063 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.