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/Problem14_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 18:00:12,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 18:00:12,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 18:00:12,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 18:00:13,018 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 18:00:13,033 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 18:00:13,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 18:00:13,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 18:00:13,034 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 18:00:13,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 18:00:13,035 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 18:00:13,035 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 18:00:13,036 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 18:00:13,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 18:00:13,036 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 18:00:13,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 18:00:13,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 18:00:13,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 18:00:13,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 18:00:13,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 18:00:13,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 18:00:13,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 18:00:13,038 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 18:00:13,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 18:00:13,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 18:00:13,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 18:00:13,039 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 18:00:13,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 18:00:13,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 18:00:13,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 18:00:13,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 18:00:13,040 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 18:00:13,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 18:00:13,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 18:00:13,040 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 18:00:13,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 18:00:13,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 18:00:13,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 18:00:13,089 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 18:00:13,089 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 18:00:13,090 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label03.c [2019-09-09 18:00:13,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c9ed057/a4c1003b38ce445db66f6099a1d4d475/FLAG1b52c0cd4 [2019-09-09 18:00:13,786 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 18:00:13,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label03.c [2019-09-09 18:00:13,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c9ed057/a4c1003b38ce445db66f6099a1d4d475/FLAG1b52c0cd4 [2019-09-09 18:00:14,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c9ed057/a4c1003b38ce445db66f6099a1d4d475 [2019-09-09 18:00:14,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 18:00:14,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 18:00:14,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 18:00:14,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 18:00:14,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 18:00:14,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:00:14" (1/1) ... [2019-09-09 18:00:14,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb8360c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:14, skipping insertion in model container [2019-09-09 18:00:14,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:00:14" (1/1) ... [2019-09-09 18:00:14,081 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 18:00:14,155 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 18:00:14,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:00:14,991 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 18:00:15,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:00:15,121 INFO L192 MainTranslator]: Completed translation [2019-09-09 18:00:15,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15 WrapperNode [2019-09-09 18:00:15,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 18:00:15,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 18:00:15,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 18:00:15,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 18:00:15,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (1/1) ... [2019-09-09 18:00:15,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (1/1) ... [2019-09-09 18:00:15,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (1/1) ... [2019-09-09 18:00:15,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (1/1) ... [2019-09-09 18:00:15,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (1/1) ... [2019-09-09 18:00:15,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (1/1) ... [2019-09-09 18:00:15,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (1/1) ... [2019-09-09 18:00:15,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 18:00:15,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 18:00:15,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 18:00:15,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 18:00:15,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (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 18:00:15,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 18:00:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 18:00:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 18:00:15,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 18:00:15,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 18:00:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 18:00:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 18:00:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 18:00:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 18:00:15,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 18:00:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 18:00:16,796 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 18:00:16,796 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 18:00:16,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:00:16 BoogieIcfgContainer [2019-09-09 18:00:16,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 18:00:16,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 18:00:16,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 18:00:16,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 18:00:16,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:00:14" (1/3) ... [2019-09-09 18:00:16,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c72ef9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:00:16, skipping insertion in model container [2019-09-09 18:00:16,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:00:15" (2/3) ... [2019-09-09 18:00:16,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c72ef9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:00:16, skipping insertion in model container [2019-09-09 18:00:16,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:00:16" (3/3) ... [2019-09-09 18:00:16,807 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label03.c [2019-09-09 18:00:16,817 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 18:00:16,829 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 18:00:16,847 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 18:00:16,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 18:00:16,879 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 18:00:16,879 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 18:00:16,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 18:00:16,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 18:00:16,880 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 18:00:16,880 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 18:00:16,880 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 18:00:16,915 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-09-09 18:00:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-09 18:00:16,928 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:00:16,929 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, 1, 1, 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 18:00:16,930 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:00:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:00:16,935 INFO L82 PathProgramCache]: Analyzing trace with hash -134949414, now seen corresponding path program 1 times [2019-09-09 18:00:16,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:00:16,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:16,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:00:16,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:16,984 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:00:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:00:17,259 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 18:00:17,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:00:17,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 18:00:17,263 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:00:17,269 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 18:00:17,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 18:00:17,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 18:00:17,290 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2019-09-09 18:00:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:00:18,511 INFO L93 Difference]: Finished difference Result 440 states and 711 transitions. [2019-09-09 18:00:18,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 18:00:18,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-09-09 18:00:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:00:18,532 INFO L225 Difference]: With dead ends: 440 [2019-09-09 18:00:18,532 INFO L226 Difference]: Without dead ends: 372 [2019-09-09 18:00:18,534 INFO L628 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 [2019-09-09 18:00:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2019-09-09 18:00:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2019-09-09 18:00:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-09-09 18:00:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 602 transitions. [2019-09-09 18:00:18,652 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 602 transitions. Word has length 57 [2019-09-09 18:00:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:00:18,653 INFO L475 AbstractCegarLoop]: Abstraction has 372 states and 602 transitions. [2019-09-09 18:00:18,653 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 18:00:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 602 transitions. [2019-09-09 18:00:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 18:00:18,669 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:00:18,669 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, 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] [2019-09-09 18:00:18,670 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:00:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:00:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1948270641, now seen corresponding path program 1 times [2019-09-09 18:00:18,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:00:18,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:18,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:00:18,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:18,675 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:00:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:00:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:00:18,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:00:18,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 18:00:18,917 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:00:18,919 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 18:00:18,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 18:00:18,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 18:00:18,921 INFO L87 Difference]: Start difference. First operand 372 states and 602 transitions. Second operand 6 states. [2019-09-09 18:00:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:00:20,288 INFO L93 Difference]: Finished difference Result 756 states and 1199 transitions. [2019-09-09 18:00:20,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 18:00:20,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-09-09 18:00:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:00:20,318 INFO L225 Difference]: With dead ends: 756 [2019-09-09 18:00:20,319 INFO L226 Difference]: Without dead ends: 756 [2019-09-09 18:00:20,320 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 18:00:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2019-09-09 18:00:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 752. [2019-09-09 18:00:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-09-09 18:00:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1190 transitions. [2019-09-09 18:00:20,374 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1190 transitions. Word has length 126 [2019-09-09 18:00:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:00:20,375 INFO L475 AbstractCegarLoop]: Abstraction has 752 states and 1190 transitions. [2019-09-09 18:00:20,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 18:00:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1190 transitions. [2019-09-09 18:00:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-09 18:00:20,378 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:00:20,378 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, 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] [2019-09-09 18:00:20,378 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:00:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:00:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1769103958, now seen corresponding path program 1 times [2019-09-09 18:00:20,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:00:20,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:20,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:00:20,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:20,381 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:00:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:00:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:00:20,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:00:20,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 18:00:20,528 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:00:20,528 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 18:00:20,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 18:00:20,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 18:00:20,529 INFO L87 Difference]: Start difference. First operand 752 states and 1190 transitions. Second operand 5 states. [2019-09-09 18:00:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:00:21,872 INFO L93 Difference]: Finished difference Result 1158 states and 1699 transitions. [2019-09-09 18:00:21,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 18:00:21,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-09-09 18:00:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:00:21,890 INFO L225 Difference]: With dead ends: 1158 [2019-09-09 18:00:21,890 INFO L226 Difference]: Without dead ends: 1158 [2019-09-09 18:00:21,891 INFO L628 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 [2019-09-09 18:00:21,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2019-09-09 18:00:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1138. [2019-09-09 18:00:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2019-09-09 18:00:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1632 transitions. [2019-09-09 18:00:21,962 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1632 transitions. Word has length 127 [2019-09-09 18:00:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:00:21,969 INFO L475 AbstractCegarLoop]: Abstraction has 1138 states and 1632 transitions. [2019-09-09 18:00:21,970 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 18:00:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1632 transitions. [2019-09-09 18:00:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-09 18:00:21,972 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:00:21,972 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, 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] [2019-09-09 18:00:21,972 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:00:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:00:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1462937402, now seen corresponding path program 1 times [2019-09-09 18:00:21,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:00:21,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:21,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:00:21,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:21,974 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:00:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:00:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:00:22,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:00:22,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 18:00:22,107 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:00:22,107 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 18:00:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 18:00:22,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 18:00:22,108 INFO L87 Difference]: Start difference. First operand 1138 states and 1632 transitions. Second operand 5 states. [2019-09-09 18:00:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:00:23,387 INFO L93 Difference]: Finished difference Result 1750 states and 2413 transitions. [2019-09-09 18:00:23,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 18:00:23,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2019-09-09 18:00:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:00:23,404 INFO L225 Difference]: With dead ends: 1750 [2019-09-09 18:00:23,404 INFO L226 Difference]: Without dead ends: 1750 [2019-09-09 18:00:23,406 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 18:00:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-09-09 18:00:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1514. [2019-09-09 18:00:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2019-09-09 18:00:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2084 transitions. [2019-09-09 18:00:23,467 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2084 transitions. Word has length 129 [2019-09-09 18:00:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:00:23,468 INFO L475 AbstractCegarLoop]: Abstraction has 1514 states and 2084 transitions. [2019-09-09 18:00:23,468 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 18:00:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2084 transitions. [2019-09-09 18:00:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-09 18:00:23,470 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:00:23,470 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, 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] [2019-09-09 18:00:23,471 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:00:23,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:00:23,471 INFO L82 PathProgramCache]: Analyzing trace with hash -660546695, now seen corresponding path program 1 times [2019-09-09 18:00:23,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:00:23,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:23,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:00:23,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:23,473 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:00:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:00:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:00:23,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:00:23,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 18:00:23,581 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:00:23,581 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 18:00:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 18:00:23,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 18:00:23,582 INFO L87 Difference]: Start difference. First operand 1514 states and 2084 transitions. Second operand 5 states. [2019-09-09 18:00:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:00:25,221 INFO L93 Difference]: Finished difference Result 2504 states and 3256 transitions. [2019-09-09 18:00:25,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-09 18:00:25,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-09-09 18:00:25,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:00:25,234 INFO L225 Difference]: With dead ends: 2504 [2019-09-09 18:00:25,234 INFO L226 Difference]: Without dead ends: 2062 [2019-09-09 18:00:25,235 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-09-09 18:00:25,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2019-09-09 18:00:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1692. [2019-09-09 18:00:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2019-09-09 18:00:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 1958 transitions. [2019-09-09 18:00:25,290 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 1958 transitions. Word has length 130 [2019-09-09 18:00:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:00:25,290 INFO L475 AbstractCegarLoop]: Abstraction has 1692 states and 1958 transitions. [2019-09-09 18:00:25,290 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 18:00:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 1958 transitions. [2019-09-09 18:00:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-09-09 18:00:25,294 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:00:25,295 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 18:00:25,295 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:00:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:00:25,296 INFO L82 PathProgramCache]: Analyzing trace with hash -606122255, now seen corresponding path program 1 times [2019-09-09 18:00:25,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:00:25,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:25,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:00:25,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:00:25,299 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:00:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:00:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:00:25,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:00:25,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:00:25,457 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:00:25,458 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:00:25,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:00:25,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:00:25,459 INFO L87 Difference]: Start difference. First operand 1692 states and 1958 transitions. Second operand 4 states. [2019-09-09 18:00:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:00:26,522 INFO L93 Difference]: Finished difference Result 2798 states and 3197 transitions. [2019-09-09 18:00:26,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:00:26,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2019-09-09 18:00:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:00:26,523 INFO L225 Difference]: With dead ends: 2798 [2019-09-09 18:00:26,524 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 18:00:26,525 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:00:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 18:00:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 18:00:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 18:00:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 18:00:26,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2019-09-09 18:00:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:00:26,526 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 18:00:26,526 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:00:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 18:00:26,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 18:00:26,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 06:00:26 BoogieIcfgContainer [2019-09-09 18:00:26,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 18:00:26,536 INFO L168 Benchmark]: Toolchain (without parser) took 12476.59 ms. Allocated memory was 134.2 MB in the beginning and 410.0 MB in the end (delta: 275.8 MB). Free memory was 87.2 MB in the beginning and 322.0 MB in the end (delta: -234.8 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2019-09-09 18:00:26,538 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 134.2 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 18:00:26,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1058.54 ms. Allocated memory was 134.2 MB in the beginning and 206.0 MB in the end (delta: 71.8 MB). Free memory was 87.0 MB in the beginning and 167.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2019-09-09 18:00:26,541 INFO L168 Benchmark]: Boogie Preprocessor took 172.06 ms. Allocated memory is still 206.0 MB. Free memory was 167.2 MB in the beginning and 161.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-09-09 18:00:26,544 INFO L168 Benchmark]: RCFGBuilder took 1503.68 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 161.7 MB in the beginning and 158.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2019-09-09 18:00:26,550 INFO L168 Benchmark]: TraceAbstraction took 9733.65 ms. Allocated memory was 231.7 MB in the beginning and 410.0 MB in the end (delta: 178.3 MB). Free memory was 158.6 MB in the beginning and 322.0 MB in the end (delta: -163.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-09-09 18:00:26,558 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 134.2 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1058.54 ms. Allocated memory was 134.2 MB in the beginning and 206.0 MB in the end (delta: 71.8 MB). Free memory was 87.0 MB in the beginning and 167.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.06 ms. Allocated memory is still 206.0 MB. Free memory was 167.2 MB in the beginning and 161.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1503.68 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 161.7 MB in the beginning and 158.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9733.65 ms. Allocated memory was 231.7 MB in the beginning and 410.0 MB in the end (delta: 178.3 MB). Free memory was 158.6 MB in the beginning and 322.0 MB in the end (delta: -163.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 157]: 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, 254 locations, 1 error locations. SAFE Result, 9.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 8.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 380 SDtfs, 2651 SDslu, 178 SDs, 0 SdLazy, 5047 SolverSat, 1142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1692occurred in iteration=5, 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: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 630 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 791 NumberOfCodeBlocks, 791 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 785 ConstructedInterpolants, 0 QuantifiedInterpolants, 321291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 250/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...