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_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:07:18,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:07:18,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:07:18,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:07:18,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:07:18,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:07:18,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:07:18,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:07:18,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:07:18,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:07:18,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:07:18,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:07:18,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:07:18,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:07:18,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:07:18,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:07:18,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:07:18,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:07:18,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:07:18,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:07:18,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:07:18,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:07:18,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:07:18,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:07:18,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:07:19,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:07:19,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:07:19,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:07:19,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:07:19,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:07:19,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:07:19,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:07:19,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:07:19,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:07:19,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:07:19,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:07:19,009 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 [2019-10-13 18:07:19,023 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:07:19,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:07:19,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:07:19,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:07:19,025 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:07:19,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:07:19,026 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:07:19,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:07:19,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:07:19,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:07:19,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:07:19,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:07:19,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:07:19,027 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:07:19,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:07:19,027 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:07:19,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:07:19,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:07:19,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:07:19,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:07:19,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:07:19,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:19,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:07:19,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:07:19,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:07:19,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:07:19,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:07:19,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:07:19,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:07:19,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:07:19,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:07:19,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:07:19,318 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:07:19,318 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:07:19,320 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2019-10-13 18:07:19,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cccca7d/ede6c134a3fc447db3ea3a25f51ad594/FLAG2ac6f5481 [2019-10-13 18:07:20,103 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:07:20,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2019-10-13 18:07:20,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cccca7d/ede6c134a3fc447db3ea3a25f51ad594/FLAG2ac6f5481 [2019-10-13 18:07:20,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16cccca7d/ede6c134a3fc447db3ea3a25f51ad594 [2019-10-13 18:07:20,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:07:20,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:07:20,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:20,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:07:20,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:07:20,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:20" (1/1) ... [2019-10-13 18:07:20,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54268d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:20, skipping insertion in model container [2019-10-13 18:07:20,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:20" (1/1) ... [2019-10-13 18:07:20,211 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:07:20,335 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:07:21,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:21,494 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:07:22,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:22,125 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:07:22,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22 WrapperNode [2019-10-13 18:07:22,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:22,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:07:22,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:07:22,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:07:22,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (1/1) ... [2019-10-13 18:07:22,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (1/1) ... [2019-10-13 18:07:22,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (1/1) ... [2019-10-13 18:07:22,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (1/1) ... [2019-10-13 18:07:22,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (1/1) ... [2019-10-13 18:07:22,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (1/1) ... [2019-10-13 18:07:22,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (1/1) ... [2019-10-13 18:07:22,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:07:22,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:07:22,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:07:22,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:07:22,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (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 [2019-10-13 18:07:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:07:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:07:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:07:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:07:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:07:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:07:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:07:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:07:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:07:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:07:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:07:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:07:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:07:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:07:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:07:26,222 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:07:26,222 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:07:26,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:26 BoogieIcfgContainer [2019-10-13 18:07:26,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:07:26,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:07:26,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:07:26,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:07:26,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:07:20" (1/3) ... [2019-10-13 18:07:26,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eebef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:26, skipping insertion in model container [2019-10-13 18:07:26,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:22" (2/3) ... [2019-10-13 18:07:26,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37eebef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:26, skipping insertion in model container [2019-10-13 18:07:26,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:26" (3/3) ... [2019-10-13 18:07:26,250 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label46.c [2019-10-13 18:07:26,262 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:07:26,276 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:07:26,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:07:26,337 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:07:26,338 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:07:26,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:07:26,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:07:26,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:07:26,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:07:26,338 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:07:26,339 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:07:26,383 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:07:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 18:07:26,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:26,394 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] [2019-10-13 18:07:26,396 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:26,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1888007721, now seen corresponding path program 1 times [2019-10-13 18:07:26,412 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:26,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131537467] [2019-10-13 18:07:26,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:26,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:26,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:26,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131537467] [2019-10-13 18:07:26,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:26,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:26,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661587931] [2019-10-13 18:07:26,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:26,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:26,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:26,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:26,810 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:36,582 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-10-13 18:07:36,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:36,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2019-10-13 18:07:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:36,621 INFO L225 Difference]: With dead ends: 2984 [2019-10-13 18:07:36,621 INFO L226 Difference]: Without dead ends: 2142 [2019-10-13 18:07:36,632 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:07:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-13 18:07:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-10-13 18:07:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-10-13 18:07:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-10-13 18:07:36,895 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 42 [2019-10-13 18:07:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:36,896 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-10-13 18:07:36,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-10-13 18:07:36,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 18:07:36,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:36,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:36,904 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:36,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1067945283, now seen corresponding path program 1 times [2019-10-13 18:07:36,904 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:36,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323209325] [2019-10-13 18:07:36,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:36,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:36,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:37,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323209325] [2019-10-13 18:07:37,272 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:37,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:07:37,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771012039] [2019-10-13 18:07:37,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:07:37,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:07:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:07:37,276 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-10-13 18:07:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:48,374 INFO L93 Difference]: Finished difference Result 8648 states and 15579 transitions. [2019-10-13 18:07:48,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:07:48,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 115 [2019-10-13 18:07:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:48,420 INFO L225 Difference]: With dead ends: 8648 [2019-10-13 18:07:48,421 INFO L226 Difference]: Without dead ends: 6522 [2019-10-13 18:07:48,428 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:07:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2019-10-13 18:07:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 6483. [2019-10-13 18:07:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6483 states. [2019-10-13 18:07:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6483 states to 6483 states and 10419 transitions. [2019-10-13 18:07:48,626 INFO L78 Accepts]: Start accepts. Automaton has 6483 states and 10419 transitions. Word has length 115 [2019-10-13 18:07:48,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:48,629 INFO L462 AbstractCegarLoop]: Abstraction has 6483 states and 10419 transitions. [2019-10-13 18:07:48,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:07:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6483 states and 10419 transitions. [2019-10-13 18:07:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 18:07:48,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:48,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:48,647 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:48,647 INFO L82 PathProgramCache]: Analyzing trace with hash -665971972, now seen corresponding path program 1 times [2019-10-13 18:07:48,647 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:48,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138449507] [2019-10-13 18:07:48,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:48,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:48,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:49,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138449507] [2019-10-13 18:07:49,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000139485] [2019-10-13 18:07:49,041 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 [2019-10-13 18:07:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:49,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:07:49,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:49,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:07:49,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-13 18:07:49,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902169616] [2019-10-13 18:07:49,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:07:49,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:49,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:07:49,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:07:49,245 INFO L87 Difference]: Start difference. First operand 6483 states and 10419 transitions. Second operand 3 states. [2019-10-13 18:07:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:52,679 INFO L93 Difference]: Finished difference Result 15118 states and 24623 transitions. [2019-10-13 18:07:52,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:07:52,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-13 18:07:52,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:52,727 INFO L225 Difference]: With dead ends: 15118 [2019-10-13 18:07:52,728 INFO L226 Difference]: Without dead ends: 8641 [2019-10-13 18:07:52,743 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:07:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8641 states. [2019-10-13 18:07:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8641 to 8641. [2019-10-13 18:07:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8641 states. [2019-10-13 18:07:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8641 states to 8641 states and 13103 transitions. [2019-10-13 18:07:52,967 INFO L78 Accepts]: Start accepts. Automaton has 8641 states and 13103 transitions. Word has length 164 [2019-10-13 18:07:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:52,967 INFO L462 AbstractCegarLoop]: Abstraction has 8641 states and 13103 transitions. [2019-10-13 18:07:52,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:07:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8641 states and 13103 transitions. [2019-10-13 18:07:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 18:07:52,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:52,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:53,178 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:07:53,178 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:53,179 INFO L82 PathProgramCache]: Analyzing trace with hash 980263212, now seen corresponding path program 1 times [2019-10-13 18:07:53,179 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:53,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20386497] [2019-10-13 18:07:53,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:53,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:53,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:53,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20386497] [2019-10-13 18:07:53,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:53,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:07:53,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582964520] [2019-10-13 18:07:53,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:07:53,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:53,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:07:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:07:53,590 INFO L87 Difference]: Start difference. First operand 8641 states and 13103 transitions. Second operand 9 states.