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 0.1.24-13a467a-m [2019-10-14 22:05:17,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:05:17,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:05:17,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:05:17,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:05:17,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:05:17,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:05:17,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:05:17,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:05:17,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:05:17,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:05:17,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:05:17,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:05:17,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:05:17,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:05:17,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:05:17,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:05:17,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:05:17,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:05:17,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:05:17,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:05:17,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:05:17,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:05:17,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:05:17,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:05:17,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:05:17,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:05:17,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:05:17,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:05:17,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:05:17,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:05:17,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:05:17,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:05:17,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:05:17,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:05:17,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:05:17,926 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 22:05:17,947 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:05:17,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:05:17,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:05:17,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:05:17,949 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:05:17,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:05:17,950 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:05:17,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:05:17,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:05:17,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:05:17,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:05:17,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:05:17,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:05:17,952 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:05:17,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:05:17,952 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:05:17,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:05:17,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:05:17,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:05:17,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:05:17,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:05:17,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:05:17,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:05:17,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:05:17,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:05:17,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:05:17,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:05:17,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:05:17,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:05:18,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:05:18,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:05:18,250 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:05:18,252 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:05:18,253 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:05:18,253 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2019-10-14 22:05:18,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cea45da9/08a8eb23c88f46ddbf08e43408457b24/FLAG0076cdb21 [2019-10-14 22:05:19,120 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:05:19,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2019-10-14 22:05:19,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cea45da9/08a8eb23c88f46ddbf08e43408457b24/FLAG0076cdb21 [2019-10-14 22:05:19,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cea45da9/08a8eb23c88f46ddbf08e43408457b24 [2019-10-14 22:05:19,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:05:19,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:05:19,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:19,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:05:19,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:05:19,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:19" (1/1) ... [2019-10-14 22:05:19,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbd8e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:19, skipping insertion in model container [2019-10-14 22:05:19,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:19" (1/1) ... [2019-10-14 22:05:19,268 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:05:19,385 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:05:20,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:20,565 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:05:21,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:21,110 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:05:21,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21 WrapperNode [2019-10-14 22:05:21,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:21,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:05:21,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:05:21,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:05:21,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (1/1) ... [2019-10-14 22:05:21,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (1/1) ... [2019-10-14 22:05:21,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (1/1) ... [2019-10-14 22:05:21,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (1/1) ... [2019-10-14 22:05:21,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (1/1) ... [2019-10-14 22:05:21,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (1/1) ... [2019-10-14 22:05:21,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (1/1) ... [2019-10-14 22:05:21,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:05:21,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:05:21,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:05:21,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:05:21,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (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 22:05:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:05:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:05:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:05:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:05:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:05:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:05:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:05:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:05:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:05:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:05:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:05:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:05:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:05:25,645 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:05:25,645 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:05:25,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:25 BoogieIcfgContainer [2019-10-14 22:05:25,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:05:25,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:05:25,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:05:25,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:05:25,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:05:19" (1/3) ... [2019-10-14 22:05:25,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77de837f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:25, skipping insertion in model container [2019-10-14 22:05:25,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:21" (2/3) ... [2019-10-14 22:05:25,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77de837f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:25, skipping insertion in model container [2019-10-14 22:05:25,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:25" (3/3) ... [2019-10-14 22:05:25,665 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label30.c [2019-10-14 22:05:25,682 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:05:25,695 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:05:25,707 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:05:25,750 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:05:25,750 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:05:25,750 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:05:25,751 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:05:25,751 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:05:25,751 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:05:25,751 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:05:25,751 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:05:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-10-14 22:05:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 22:05:25,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:25,799 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] [2019-10-14 22:05:25,800 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 993587001, now seen corresponding path program 1 times [2019-10-14 22:05:25,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:25,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245854076] [2019-10-14 22:05:25,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:25,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:25,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:26,202 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 22:05:26,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245854076] [2019-10-14 22:05:26,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:26,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:05:26,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422653622] [2019-10-14 22:05:26,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:05:26,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:26,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:05:26,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:05:26,227 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2019-10-14 22:05:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:35,035 INFO L93 Difference]: Finished difference Result 2181 states and 4039 transitions. [2019-10-14 22:05:35,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:05:35,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-14 22:05:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:35,064 INFO L225 Difference]: With dead ends: 2181 [2019-10-14 22:05:35,065 INFO L226 Difference]: Without dead ends: 1495 [2019-10-14 22:05:35,076 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 [2019-10-14 22:05:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2019-10-14 22:05:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1458. [2019-10-14 22:05:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2019-10-14 22:05:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2493 transitions. [2019-10-14 22:05:35,235 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2493 transitions. Word has length 30 [2019-10-14 22:05:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:35,236 INFO L462 AbstractCegarLoop]: Abstraction has 1458 states and 2493 transitions. [2019-10-14 22:05:35,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:05:35,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2493 transitions. [2019-10-14 22:05:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-14 22:05:35,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:35,245 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] [2019-10-14 22:05:35,245 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -122191608, now seen corresponding path program 1 times [2019-10-14 22:05:35,246 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:35,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321559263] [2019-10-14 22:05:35,246 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:35,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:35,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:35,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321559263] [2019-10-14 22:05:35,590 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:35,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:05:35,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341622125] [2019-10-14 22:05:35,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:05:35,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:35,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:05:35,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:05:35,594 INFO L87 Difference]: Start difference. First operand 1458 states and 2493 transitions. Second operand 8 states. [2019-10-14 22:05:45,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:45,949 INFO L93 Difference]: Finished difference Result 5746 states and 10378 transitions. [2019-10-14 22:05:45,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:05:45,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-14 22:05:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:45,989 INFO L225 Difference]: With dead ends: 5746 [2019-10-14 22:05:45,989 INFO L226 Difference]: Without dead ends: 4294 [2019-10-14 22:05:45,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:05:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2019-10-14 22:05:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4230. [2019-10-14 22:05:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4230 states. [2019-10-14 22:05:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6209 transitions. [2019-10-14 22:05:46,153 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6209 transitions. Word has length 108 [2019-10-14 22:05:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:46,154 INFO L462 AbstractCegarLoop]: Abstraction has 4230 states and 6209 transitions. [2019-10-14 22:05:46,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:05:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6209 transitions. [2019-10-14 22:05:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-14 22:05:46,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:46,157 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] [2019-10-14 22:05:46,157 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:46,157 INFO L82 PathProgramCache]: Analyzing trace with hash -771762316, now seen corresponding path program 1 times [2019-10-14 22:05:46,158 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:46,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284522748] [2019-10-14 22:05:46,158 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:46,158 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:46,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:46,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284522748] [2019-10-14 22:05:46,405 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:46,405 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:05:46,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283461608] [2019-10-14 22:05:46,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:05:46,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:46,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:05:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:05:46,406 INFO L87 Difference]: Start difference. First operand 4230 states and 6209 transitions. Second operand 9 states. [2019-10-14 22:05:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:55,443 INFO L93 Difference]: Finished difference Result 16716 states and 26086 transitions. [2019-10-14 22:05:55,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:05:55,448 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2019-10-14 22:05:55,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:55,520 INFO L225 Difference]: With dead ends: 16716 [2019-10-14 22:05:55,520 INFO L226 Difference]: Without dead ends: 11193 [2019-10-14 22:05:55,546 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 [2019-10-14 22:05:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11193 states. [2019-10-14 22:05:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11193 to 9376. [2019-10-14 22:05:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9376 states. [2019-10-14 22:05:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 13457 transitions. [2019-10-14 22:05:55,964 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 13457 transitions. Word has length 109 [2019-10-14 22:05:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:55,965 INFO L462 AbstractCegarLoop]: Abstraction has 9376 states and 13457 transitions. [2019-10-14 22:05:55,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:05:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 13457 transitions. [2019-10-14 22:05:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-14 22:05:55,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:55,970 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] [2019-10-14 22:05:55,970 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:55,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:55,970 INFO L82 PathProgramCache]: Analyzing trace with hash 40731763, now seen corresponding path program 1 times [2019-10-14 22:05:55,971 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:55,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830657282] [2019-10-14 22:05:55,971 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:55,971 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:55,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-14 22:05:56,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830657282] [2019-10-14 22:05:56,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503153329] [2019-10-14 22:05:56,219 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 22:05:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:56,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:05:56,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:05:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-14 22:05:56,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:05:56,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:05:56,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885026508] [2019-10-14 22:05:56,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:05:56,473 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:56,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:05:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:05:56,474 INFO L87 Difference]: Start difference. First operand 9376 states and 13457 transitions. Second operand 3 states.