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/Problem10_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:24:39,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:24:39,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:24:39,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:24:39,762 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 [2019-09-09 14:24:39,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:24:39,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:24:39,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:24:39,778 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:24:39,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:24:39,779 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:24:39,779 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:24:39,779 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:24:39,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:24:39,780 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:24:39,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:24:39,781 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:24:39,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:24:39,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:24:39,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:24:39,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:24:39,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:24:39,782 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:24:39,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:24:39,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:24:39,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:24:39,783 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:24:39,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:24:39,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:24:39,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:24:39,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:24:39,784 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:24:39,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:24:39,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:24:39,784 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:24:39,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:24:39,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:24:39,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:24:39,833 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:24:39,833 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:24:39,834 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2019-09-09 14:24:39,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42c1635a2/ae682fd79a2d419295d4969b07e84a2e/FLAG9df005618 [2019-09-09 14:24:40,448 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:24:40,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2019-09-09 14:24:40,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42c1635a2/ae682fd79a2d419295d4969b07e84a2e/FLAG9df005618 [2019-09-09 14:24:40,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42c1635a2/ae682fd79a2d419295d4969b07e84a2e [2019-09-09 14:24:40,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:24:40,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:24:40,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:24:40,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:24:40,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:24:40,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:24:40" (1/1) ... [2019-09-09 14:24:40,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7c8c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:40, skipping insertion in model container [2019-09-09 14:24:40,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:24:40" (1/1) ... [2019-09-09 14:24:40,800 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:24:40,847 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:24:41,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:24:41,375 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:24:41,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:24:41,520 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:24:41,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41 WrapperNode [2019-09-09 14:24:41,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:24:41,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:24:41,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:24:41,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:24:41,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (1/1) ... [2019-09-09 14:24:41,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (1/1) ... [2019-09-09 14:24:41,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (1/1) ... [2019-09-09 14:24:41,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (1/1) ... [2019-09-09 14:24:41,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (1/1) ... [2019-09-09 14:24:41,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (1/1) ... [2019-09-09 14:24:41,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (1/1) ... [2019-09-09 14:24:41,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:24:41,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:24:41,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:24:41,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:24:41,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (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 [2019-09-09 14:24:41,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:24:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:24:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:24:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:24:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:24:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:24:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:24:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:24:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:24:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:24:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:24:43,004 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:24:43,005 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:24:43,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:24:43 BoogieIcfgContainer [2019-09-09 14:24:43,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:24:43,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:24:43,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:24:43,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:24:43,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:24:40" (1/3) ... [2019-09-09 14:24:43,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cfc5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:24:43, skipping insertion in model container [2019-09-09 14:24:43,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:24:41" (2/3) ... [2019-09-09 14:24:43,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cfc5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:24:43, skipping insertion in model container [2019-09-09 14:24:43,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:24:43" (3/3) ... [2019-09-09 14:24:43,015 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2019-09-09 14:24:43,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:24:43,039 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:24:43,058 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:24:43,091 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:24:43,091 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:24:43,091 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:24:43,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:24:43,092 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:24:43,092 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:24:43,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:24:43,092 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:24:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:24:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-09 14:24:43,127 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:24:43,128 INFO L399 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] [2019-09-09 14:24:43,130 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:24:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:24:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1877810762, now seen corresponding path program 1 times [2019-09-09 14:24:43,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:24:43,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:24:43,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:24:43,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:24:43,184 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:24:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:24:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:24:43,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:24:43,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 14:24:43,367 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:24:43,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 14:24:43,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 14:24:43,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:24:43,392 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-09-09 14:24:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:24:44,470 INFO L93 Difference]: Finished difference Result 362 states and 555 transitions. [2019-09-09 14:24:44,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 14:24:44,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-09-09 14:24:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:24:44,509 INFO L225 Difference]: With dead ends: 362 [2019-09-09 14:24:44,510 INFO L226 Difference]: Without dead ends: 294 [2019-09-09 14:24:44,514 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:24:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-09 14:24:44,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-09-09 14:24:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:24:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-09-09 14:24:44,627 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 31 [2019-09-09 14:24:44,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:24:44,628 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-09-09 14:24:44,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 14:24:44,628 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-09-09 14:24:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-09 14:24:44,637 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:24:44,638 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:24:44,639 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:24:44,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:24:44,640 INFO L82 PathProgramCache]: Analyzing trace with hash 583914154, now seen corresponding path program 1 times [2019-09-09 14:24:44,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:24:44,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:24:44,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:24:44,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:24:44,644 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:24:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:24:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:24:44,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:24:44,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 14:24:44,972 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:24:44,974 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 14:24:44,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 14:24:44,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 14:24:44,975 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2019-09-09 14:24:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:24:45,923 INFO L93 Difference]: Finished difference Result 602 states and 882 transitions. [2019-09-09 14:24:45,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 14:24:45,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-09-09 14:24:45,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:24:45,928 INFO L225 Difference]: With dead ends: 602 [2019-09-09 14:24:45,928 INFO L226 Difference]: Without dead ends: 602 [2019-09-09 14:24:45,929 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 14:24:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-09-09 14:24:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 592. [2019-09-09 14:24:45,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-09-09 14:24:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 867 transitions. [2019-09-09 14:24:45,962 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 867 transitions. Word has length 113 [2019-09-09 14:24:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:24:45,963 INFO L475 AbstractCegarLoop]: Abstraction has 592 states and 867 transitions. [2019-09-09 14:24:45,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 14:24:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 867 transitions. [2019-09-09 14:24:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-09 14:24:45,966 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:24:45,966 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:24:45,966 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:24:45,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:24:45,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1247397430, now seen corresponding path program 1 times [2019-09-09 14:24:45,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:24:45,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:24:45,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:24:45,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:24:45,969 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:24:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:24:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:24:46,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:24:46,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 14:24:46,135 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:24:46,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 14:24:46,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 14:24:46,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 14:24:46,136 INFO L87 Difference]: Start difference. First operand 592 states and 867 transitions. Second operand 6 states. [2019-09-09 14:24:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:24:47,103 INFO L93 Difference]: Finished difference Result 902 states and 1343 transitions. [2019-09-09 14:24:47,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 14:24:47,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2019-09-09 14:24:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:24:47,105 INFO L225 Difference]: With dead ends: 902 [2019-09-09 14:24:47,105 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 14:24:47,106 INFO L628 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 [2019-09-09 14:24:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 14:24:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 14:24:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 14:24:47,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 14:24:47,107 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2019-09-09 14:24:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:24:47,107 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 14:24:47,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 14:24:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 14:24:47,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 14:24:47,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 02:24:47 BoogieIcfgContainer [2019-09-09 14:24:47,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 14:24:47,115 INFO L168 Benchmark]: Toolchain (without parser) took 6331.59 ms. Allocated memory was 131.6 MB in the beginning and 336.1 MB in the end (delta: 204.5 MB). Free memory was 85.9 MB in the beginning and 271.1 MB in the end (delta: -185.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2019-09-09 14:24:47,116 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 131.6 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 14:24:47,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.52 ms. Allocated memory was 131.6 MB in the beginning and 200.8 MB in the end (delta: 69.2 MB). Free memory was 85.7 MB in the beginning and 164.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2019-09-09 14:24:47,118 INFO L168 Benchmark]: Boogie Preprocessor took 115.59 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 160.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-09-09 14:24:47,119 INFO L168 Benchmark]: RCFGBuilder took 1369.27 ms. Allocated memory was 200.8 MB in the beginning and 222.8 MB in the end (delta: 22.0 MB). Free memory was 160.1 MB in the beginning and 178.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2019-09-09 14:24:47,120 INFO L168 Benchmark]: TraceAbstraction took 4105.47 ms. Allocated memory was 222.8 MB in the beginning and 336.1 MB in the end (delta: 113.2 MB). Free memory was 178.9 MB in the beginning and 271.1 MB in the end (delta: -92.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-09-09 14:24:47,124 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 131.6 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 736.52 ms. Allocated memory was 131.6 MB in the beginning and 200.8 MB in the end (delta: 69.2 MB). Free memory was 85.7 MB in the beginning and 164.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.59 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 160.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1369.27 ms. Allocated memory was 200.8 MB in the beginning and 222.8 MB in the end (delta: 22.0 MB). Free memory was 160.1 MB in the beginning and 178.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4105.47 ms. Allocated memory was 222.8 MB in the beginning and 336.1 MB in the end (delta: 113.2 MB). Free memory was 178.9 MB in the beginning and 271.1 MB in the end (delta: -92.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 992 SDslu, 81 SDs, 0 SdLazy, 1716 SolverSat, 383 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=592occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 131900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 48/48 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...