java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:05:58,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:05:58,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:05:58,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-14 22:05:58,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:05:58,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:05:58,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:05:58,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:05:58,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:05:58,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:05:58,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:05:58,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:05:58,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:05:58,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:05:58,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:05:58,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:05:58,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:05:58,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:05:58,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:05:58,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:05:58,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:05:58,966 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:05:58,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:05:58,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:05:58,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:05:58,970 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:05:58,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:05:58,971 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:05:58,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:05:58,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:05:58,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:05:58,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:05:58,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:05:58,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:05:58,972 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:05:58,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:05:58,972 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:05:58,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:05:58,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:05:58,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:05:58,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:05:58,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:05:58,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:05:58,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:05:58,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:05:58,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:05:58,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:05:58,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:05:58,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:05:58,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:05:59,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:05:59,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:05:59,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:05:59,257 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:05:59,257 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:05:59,258 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2019-10-14 22:05:59,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5cee8c0/91e21edccc244aa6bd8faea7db5159d8/FLAG978b9f09f [2019-10-14 22:06:00,083 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:06:00,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2019-10-14 22:06:00,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5cee8c0/91e21edccc244aa6bd8faea7db5159d8/FLAG978b9f09f [2019-10-14 22:06:00,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5cee8c0/91e21edccc244aa6bd8faea7db5159d8 [2019-10-14 22:06:00,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:06:00,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:06:00,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:00,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:06:00,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:06:00,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:00" (1/1) ... [2019-10-14 22:06:00,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff2f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:00, skipping insertion in model container [2019-10-14 22:06:00,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:00" (1/1) ... [2019-10-14 22:06:00,214 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:06:00,343 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:06:01,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:01,579 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:06:02,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:02,120 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:06:02,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02 WrapperNode [2019-10-14 22:06:02,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:02,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:06:02,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:06:02,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:06:02,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (1/1) ... [2019-10-14 22:06:02,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (1/1) ... [2019-10-14 22:06:02,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (1/1) ... [2019-10-14 22:06:02,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (1/1) ... [2019-10-14 22:06:02,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (1/1) ... [2019-10-14 22:06:02,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (1/1) ... [2019-10-14 22:06:02,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (1/1) ... [2019-10-14 22:06:02,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:06:02,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:06:02,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:06:02,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:06:02,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (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 [2019-10-14 22:06:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:06:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:06:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:06:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:06:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:06:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:06:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:06:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:06:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:06:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:06:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:06:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:06:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:06:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:06:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:06:06,290 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:06:06,291 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:06:06,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:06 BoogieIcfgContainer [2019-10-14 22:06:06,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:06:06,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:06:06,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:06:06,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:06:06,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:06:00" (1/3) ... [2019-10-14 22:06:06,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582b3bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:06, skipping insertion in model container [2019-10-14 22:06:06,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:02" (2/3) ... [2019-10-14 22:06:06,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582b3bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:06, skipping insertion in model container [2019-10-14 22:06:06,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:06" (3/3) ... [2019-10-14 22:06:06,311 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label37.c [2019-10-14 22:06:06,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:06:06,338 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:06:06,349 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:06:06,391 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:06:06,391 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:06:06,391 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:06:06,391 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:06:06,392 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:06:06,392 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:06:06,392 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:06:06,392 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:06:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-14 22:06:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 22:06:06,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:06,435 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:06:06,437 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:06,443 INFO L82 PathProgramCache]: Analyzing trace with hash -545503303, now seen corresponding path program 1 times [2019-10-14 22:06:06,451 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:06,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920783917] [2019-10-14 22:06:06,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:06,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:06,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:06,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920783917] [2019-10-14 22:06:06,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:06,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:06:06,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347444149] [2019-10-14 22:06:06,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:06:06,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:06,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:06:06,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:06:06,869 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-14 22:06:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:16,347 INFO L93 Difference]: Finished difference Result 2984 states and 5769 transitions. [2019-10-14 22:06:16,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:06:16,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-14 22:06:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:16,387 INFO L225 Difference]: With dead ends: 2984 [2019-10-14 22:06:16,387 INFO L226 Difference]: Without dead ends: 2142 [2019-10-14 22:06:16,398 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:06:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-14 22:06:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2019-10-14 22:06:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2019-10-14 22:06:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3571 transitions. [2019-10-14 22:06:16,573 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3571 transitions. Word has length 62 [2019-10-14 22:06:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:16,574 INFO L462 AbstractCegarLoop]: Abstraction has 2135 states and 3571 transitions. [2019-10-14 22:06:16,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:06:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3571 transitions. [2019-10-14 22:06:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-14 22:06:16,587 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:16,588 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:06:16,588 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:16,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:16,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1269044687, now seen corresponding path program 1 times [2019-10-14 22:06:16,589 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:16,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684123284] [2019-10-14 22:06:16,589 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:16,589 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:16,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:16,851 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684123284] [2019-10-14 22:06:16,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:16,852 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:06:16,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025627469] [2019-10-14 22:06:16,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:06:16,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:16,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:06:16,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:06:16,859 INFO L87 Difference]: Start difference. First operand 2135 states and 3571 transitions. Second operand 8 states. [2019-10-14 22:06:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:24,233 INFO L93 Difference]: Finished difference Result 5045 states and 8285 transitions. [2019-10-14 22:06:24,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:06:24,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2019-10-14 22:06:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:24,252 INFO L225 Difference]: With dead ends: 5045 [2019-10-14 22:06:24,253 INFO L226 Difference]: Without dead ends: 2916 [2019-10-14 22:06:24,259 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:06:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2019-10-14 22:06:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2879. [2019-10-14 22:06:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2019-10-14 22:06:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4328 transitions. [2019-10-14 22:06:24,344 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4328 transitions. Word has length 133 [2019-10-14 22:06:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:24,344 INFO L462 AbstractCegarLoop]: Abstraction has 2879 states and 4328 transitions. [2019-10-14 22:06:24,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:06:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4328 transitions. [2019-10-14 22:06:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-14 22:06:24,350 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:24,350 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:06:24,350 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:24,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:24,351 INFO L82 PathProgramCache]: Analyzing trace with hash -639360172, now seen corresponding path program 1 times [2019-10-14 22:06:24,351 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:24,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108834427] [2019-10-14 22:06:24,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:24,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:24,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:24,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108834427] [2019-10-14 22:06:24,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:24,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:06:24,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114843307] [2019-10-14 22:06:24,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:06:24,896 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:24,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:06:24,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:24,896 INFO L87 Difference]: Start difference. First operand 2879 states and 4328 transitions. Second operand 9 states. [2019-10-14 22:06:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:37,068 INFO L93 Difference]: Finished difference Result 10953 states and 16883 transitions. [2019-10-14 22:06:37,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:06:37,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-10-14 22:06:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:37,107 INFO L225 Difference]: With dead ends: 10953 [2019-10-14 22:06:37,107 INFO L226 Difference]: Without dead ends: 8080 [2019-10-14 22:06:37,115 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:06:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8080 states. [2019-10-14 22:06:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8080 to 7316. [2019-10-14 22:06:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7316 states. [2019-10-14 22:06:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 9898 transitions. [2019-10-14 22:06:37,336 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 9898 transitions. Word has length 212 [2019-10-14 22:06:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:37,338 INFO L462 AbstractCegarLoop]: Abstraction has 7316 states and 9898 transitions. [2019-10-14 22:06:37,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:06:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 9898 transitions. [2019-10-14 22:06:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-14 22:06:37,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:37,342 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 22:06:37,342 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1134912638, now seen corresponding path program 1 times [2019-10-14 22:06:37,343 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:37,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201263202] [2019-10-14 22:06:37,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:37,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:37,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 110 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 22:06:37,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201263202] [2019-10-14 22:06:37,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112433480] [2019-10-14 22:06:37,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:37,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 22:06:37,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:06:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-14 22:06:37,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:06:37,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2019-10-14 22:06:37,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736872058] [2019-10-14 22:06:37,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:06:37,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:37,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:06:37,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:06:37,876 INFO L87 Difference]: Start difference. First operand 7316 states and 9898 transitions. Second operand 5 states.