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/Problem17_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:06:15,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:06:15,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:06:15,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:06:15,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:06:15,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:06:15,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:06:15,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:06:15,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:06:15,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:06:15,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:06:15,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:06:15,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:06:15,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:06:15,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:06:15,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:06:15,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:06:15,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:06:15,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:06:15,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:06:15,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:06:15,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:06:15,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:06:15,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:06:15,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:06:15,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:06:15,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:06:15,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:06:15,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:06:15,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:06:15,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:06:15,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:06:15,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:06:15,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:06:15,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:06:15,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:06:15,109 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 18:06:15,143 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:06:15,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:06:15,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:06:15,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:06:15,148 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:06:15,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:06:15,149 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:06:15,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:06:15,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:06:15,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:06:15,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:06:15,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:06:15,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:06:15,150 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:06:15,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:06:15,150 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:06:15,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:06:15,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:06:15,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:06:15,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:06:15,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:06:15,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:15,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:06:15,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:06:15,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:06:15,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:06:15,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:06:15,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:06:15,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:06:15,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:06:15,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:06:15,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:06:15,447 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:06:15,448 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:06:15,448 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2019-10-13 18:06:15,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5921026ad/a5de52b8e895405dabd851f0b5ed70f2/FLAG4a2dedbe0 [2019-10-13 18:06:16,262 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:06:16,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2019-10-13 18:06:16,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5921026ad/a5de52b8e895405dabd851f0b5ed70f2/FLAG4a2dedbe0 [2019-10-13 18:06:16,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5921026ad/a5de52b8e895405dabd851f0b5ed70f2 [2019-10-13 18:06:16,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:06:16,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:06:16,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:16,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:06:16,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:06:16,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b5c0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:16, skipping insertion in model container [2019-10-13 18:06:16,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:16" (1/1) ... [2019-10-13 18:06:16,434 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:06:16,540 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:06:17,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:17,641 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:06:18,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:18,080 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:06:18,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18 WrapperNode [2019-10-13 18:06:18,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:18,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:06:18,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:06:18,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:06:18,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (1/1) ... [2019-10-13 18:06:18,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (1/1) ... [2019-10-13 18:06:18,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (1/1) ... [2019-10-13 18:06:18,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (1/1) ... [2019-10-13 18:06:18,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (1/1) ... [2019-10-13 18:06:18,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (1/1) ... [2019-10-13 18:06:18,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (1/1) ... [2019-10-13 18:06:18,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:06:18,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:06:18,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:06:18,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:06:18,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (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 18:06:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:06:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:06:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:06:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:06:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:06:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:06:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:06:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:06:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:06:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:06:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:06:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:06:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:06:22,570 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:06:22,571 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:06:22,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:22 BoogieIcfgContainer [2019-10-13 18:06:22,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:06:22,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:06:22,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:06:22,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:06:22,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:06:16" (1/3) ... [2019-10-13 18:06:22,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13660257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:22, skipping insertion in model container [2019-10-13 18:06:22,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:18" (2/3) ... [2019-10-13 18:06:22,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13660257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:22, skipping insertion in model container [2019-10-13 18:06:22,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:22" (3/3) ... [2019-10-13 18:06:22,597 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label30.c [2019-10-13 18:06:22,618 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:06:22,630 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:06:22,644 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:06:22,678 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:06:22,678 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:06:22,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:06:22,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:06:22,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:06:22,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:06:22,679 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:06:22,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:06:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-10-13 18:06:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 18:06:22,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:22,719 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] [2019-10-13 18:06:22,720 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:22,727 INFO L82 PathProgramCache]: Analyzing trace with hash 993587001, now seen corresponding path program 1 times [2019-10-13 18:06:22,736 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:22,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148441229] [2019-10-13 18:06:22,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:22,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:22,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:23,101 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 18:06:23,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148441229] [2019-10-13 18:06:23,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:23,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:06:23,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293526619] [2019-10-13 18:06:23,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:06:23,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:23,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:06:23,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:06:23,127 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2019-10-13 18:06:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:31,919 INFO L93 Difference]: Finished difference Result 2181 states and 4039 transitions. [2019-10-13 18:06:31,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:06:31,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-13 18:06:31,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:31,955 INFO L225 Difference]: With dead ends: 2181 [2019-10-13 18:06:31,955 INFO L226 Difference]: Without dead ends: 1495 [2019-10-13 18:06:31,970 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2019-10-13 18:06:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1458. [2019-10-13 18:06:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2019-10-13 18:06:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2493 transitions. [2019-10-13 18:06:32,117 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2493 transitions. Word has length 30 [2019-10-13 18:06:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:32,118 INFO L462 AbstractCegarLoop]: Abstraction has 1458 states and 2493 transitions. [2019-10-13 18:06:32,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:06:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2493 transitions. [2019-10-13 18:06:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 18:06:32,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:32,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:32,124 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:32,125 INFO L82 PathProgramCache]: Analyzing trace with hash -122191608, now seen corresponding path program 1 times [2019-10-13 18:06:32,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:32,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422361925] [2019-10-13 18:06:32,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:32,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:32,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:32,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422361925] [2019-10-13 18:06:32,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:32,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:06:32,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688698090] [2019-10-13 18:06:32,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:06:32,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:32,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:06:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:06:32,565 INFO L87 Difference]: Start difference. First operand 1458 states and 2493 transitions. Second operand 8 states. [2019-10-13 18:06:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:43,073 INFO L93 Difference]: Finished difference Result 5746 states and 10378 transitions. [2019-10-13 18:06:43,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:06:43,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-13 18:06:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:43,117 INFO L225 Difference]: With dead ends: 5746 [2019-10-13 18:06:43,118 INFO L226 Difference]: Without dead ends: 4294 [2019-10-13 18:06:43,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:06:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2019-10-13 18:06:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4230. [2019-10-13 18:06:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4230 states. [2019-10-13 18:06:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6209 transitions. [2019-10-13 18:06:43,311 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6209 transitions. Word has length 108 [2019-10-13 18:06:43,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:43,312 INFO L462 AbstractCegarLoop]: Abstraction has 4230 states and 6209 transitions. [2019-10-13 18:06:43,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:06:43,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6209 transitions. [2019-10-13 18:06:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-13 18:06:43,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:43,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:43,316 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:43,316 INFO L82 PathProgramCache]: Analyzing trace with hash -771762316, now seen corresponding path program 1 times [2019-10-13 18:06:43,317 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:43,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746138285] [2019-10-13 18:06:43,317 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:43,317 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:43,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:43,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746138285] [2019-10-13 18:06:43,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:43,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:43,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893203528] [2019-10-13 18:06:43,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:43,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:43,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:43,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:43,576 INFO L87 Difference]: Start difference. First operand 4230 states and 6209 transitions. Second operand 9 states. [2019-10-13 18:06:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:52,370 INFO L93 Difference]: Finished difference Result 16716 states and 26086 transitions. [2019-10-13 18:06:52,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:06:52,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2019-10-13 18:06:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:52,435 INFO L225 Difference]: With dead ends: 16716 [2019-10-13 18:06:52,436 INFO L226 Difference]: Without dead ends: 11193 [2019-10-13 18:06:52,459 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:06:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11193 states. [2019-10-13 18:06:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11193 to 9376. [2019-10-13 18:06:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9376 states. [2019-10-13 18:06:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 13457 transitions. [2019-10-13 18:06:52,759 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 13457 transitions. Word has length 109 [2019-10-13 18:06:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:52,760 INFO L462 AbstractCegarLoop]: Abstraction has 9376 states and 13457 transitions. [2019-10-13 18:06:52,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 13457 transitions. [2019-10-13 18:06:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 18:06:52,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:52,769 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:06:52,770 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:52,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:52,770 INFO L82 PathProgramCache]: Analyzing trace with hash 40731763, now seen corresponding path program 1 times [2019-10-13 18:06:52,770 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:52,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658347346] [2019-10-13 18:06:52,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:52,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:52,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 18:06:53,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658347346] [2019-10-13 18:06:53,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510016168] [2019-10-13 18:06:53,050 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 18:06:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:53,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core