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 0.1.24-13a467a-m [2019-10-14 22:06:11,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:06:11,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:06:11,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:06:11,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:06:11,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:06:11,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:06:11,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:06:11,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:06:11,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:06:11,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:06:11,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:06:11,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:06:11,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:06:11,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:06:11,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:06:11,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:06:11,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:06:11,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:06:11,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:06:11,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:06:11,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:06:11,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:06:11,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:06:11,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:06:11,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:06:11,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:06:11,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:06:11,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:06:11,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:06:11,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:06:11,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:06:11,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:06:11,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:06:11,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:06:11,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:06:11,482 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 22:06:11,496 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:06:11,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:06:11,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:06:11,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:06:11,501 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:06:11,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:06:11,502 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:06:11,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:06:11,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:06:11,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:06:11,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:06:11,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:06:11,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:06:11,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:06:11,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:06:11,506 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:06:11,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:06:11,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:06:11,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:06:11,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:06:11,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:06:11,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:06:11,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:06:11,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:06:11,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:06:11,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:06:11,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:06:11,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:06:11,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:06:11,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:06:11,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:06:11,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:06:11,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:06:11,814 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:06:11,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2019-10-14 22:06:11,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a66f14d5/eec98c36a3b24d2094022e086add271f/FLAG5768ee7f7 [2019-10-14 22:06:12,701 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:06:12,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46.c [2019-10-14 22:06:12,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a66f14d5/eec98c36a3b24d2094022e086add271f/FLAG5768ee7f7 [2019-10-14 22:06:12,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a66f14d5/eec98c36a3b24d2094022e086add271f [2019-10-14 22:06:12,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:06:12,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:06:12,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:12,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:06:12,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:06:12,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:12" (1/1) ... [2019-10-14 22:06:12,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208e5f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:12, skipping insertion in model container [2019-10-14 22:06:12,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:12" (1/1) ... [2019-10-14 22:06:12,869 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:06:12,989 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:06:14,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:14,106 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:06:14,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:14,701 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:06:14,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14 WrapperNode [2019-10-14 22:06:14,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:14,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:06:14,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:06:14,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:06:14,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... [2019-10-14 22:06:14,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... [2019-10-14 22:06:14,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... [2019-10-14 22:06:14,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... [2019-10-14 22:06:14,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... [2019-10-14 22:06:14,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... [2019-10-14 22:06:14,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... [2019-10-14 22:06:15,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:06:15,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:06:15,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:06:15,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:06:15,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:06:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:06:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:06:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:06:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:06:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:06:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:06:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:06:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:06:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:06:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:06:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:06:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:06:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:06:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:06:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:06:18,770 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:06:18,771 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:06:18,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:18 BoogieIcfgContainer [2019-10-14 22:06:18,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:06:18,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:06:18,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:06:18,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:06:18,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:06:12" (1/3) ... [2019-10-14 22:06:18,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfc58ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:18, skipping insertion in model container [2019-10-14 22:06:18,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:14" (2/3) ... [2019-10-14 22:06:18,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfc58ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:18, skipping insertion in model container [2019-10-14 22:06:18,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:18" (3/3) ... [2019-10-14 22:06:18,784 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label46.c [2019-10-14 22:06:18,794 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:06:18,803 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:06:18,815 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:06:18,848 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:06:18,848 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:06:18,848 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:06:18,848 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:06:18,848 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:06:18,848 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:06:18,849 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:06:18,849 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:06:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-14 22:06:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 22:06:18,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:18,899 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] [2019-10-14 22:06:18,900 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1888007721, now seen corresponding path program 1 times [2019-10-14 22:06:18,917 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:18,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353887559] [2019-10-14 22:06:18,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:18,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:18,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:19,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353887559] [2019-10-14 22:06:19,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:19,296 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:06:19,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660149547] [2019-10-14 22:06:19,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:06:19,302 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:06:19,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:06:19,320 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-14 22:06:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:28,733 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-10-14 22:06:28,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:06:28,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2019-10-14 22:06:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:28,767 INFO L225 Difference]: With dead ends: 2984 [2019-10-14 22:06:28,768 INFO L226 Difference]: Without dead ends: 2142 [2019-10-14 22:06:28,778 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 [2019-10-14 22:06:28,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-14 22:06:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-10-14 22:06:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-10-14 22:06:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-10-14 22:06:28,957 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 42 [2019-10-14 22:06:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:28,959 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-10-14 22:06:28,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:06:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-10-14 22:06:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-14 22:06:28,976 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:28,977 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] [2019-10-14 22:06:28,977 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1067945283, now seen corresponding path program 1 times [2019-10-14 22:06:28,979 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:28,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636832263] [2019-10-14 22:06:28,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:28,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:28,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:29,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636832263] [2019-10-14 22:06:29,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:29,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:06:29,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838168194] [2019-10-14 22:06:29,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:06:29,389 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:29,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:06:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:29,390 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-10-14 22:06:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:39,919 INFO L93 Difference]: Finished difference Result 8648 states and 15579 transitions. [2019-10-14 22:06:39,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 22:06:39,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 115 [2019-10-14 22:06:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:39,976 INFO L225 Difference]: With dead ends: 8648 [2019-10-14 22:06:39,976 INFO L226 Difference]: Without dead ends: 6522 [2019-10-14 22:06:39,984 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 [2019-10-14 22:06:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2019-10-14 22:06:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 6483. [2019-10-14 22:06:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6483 states. [2019-10-14 22:06:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6483 states to 6483 states and 10419 transitions. [2019-10-14 22:06:40,207 INFO L78 Accepts]: Start accepts. Automaton has 6483 states and 10419 transitions. Word has length 115 [2019-10-14 22:06:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:40,210 INFO L462 AbstractCegarLoop]: Abstraction has 6483 states and 10419 transitions. [2019-10-14 22:06:40,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:06:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6483 states and 10419 transitions. [2019-10-14 22:06:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-14 22:06:40,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:40,219 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] [2019-10-14 22:06:40,220 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:40,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:40,220 INFO L82 PathProgramCache]: Analyzing trace with hash -665971972, now seen corresponding path program 1 times [2019-10-14 22:06:40,221 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:40,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791117077] [2019-10-14 22:06:40,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:40,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:40,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:40,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791117077] [2019-10-14 22:06:40,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096322162] [2019-10-14 22:06:40,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:40,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:06:40,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:06:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:40,768 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:06:40,780 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-14 22:06:40,780 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493760509] [2019-10-14 22:06:40,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:06:40,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:40,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:06:40,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:40,783 INFO L87 Difference]: Start difference. First operand 6483 states and 10419 transitions. Second operand 3 states. [2019-10-14 22:06:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:44,548 INFO L93 Difference]: Finished difference Result 15118 states and 24623 transitions. [2019-10-14 22:06:44,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:06:44,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2019-10-14 22:06:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:44,592 INFO L225 Difference]: With dead ends: 15118 [2019-10-14 22:06:44,592 INFO L226 Difference]: Without dead ends: 8641 [2019-10-14 22:06:44,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:44,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8641 states. [2019-10-14 22:06:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8641 to 8641. [2019-10-14 22:06:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8641 states. [2019-10-14 22:06:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8641 states to 8641 states and 13103 transitions. [2019-10-14 22:06:44,833 INFO L78 Accepts]: Start accepts. Automaton has 8641 states and 13103 transitions. Word has length 164 [2019-10-14 22:06:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:44,835 INFO L462 AbstractCegarLoop]: Abstraction has 8641 states and 13103 transitions. [2019-10-14 22:06:44,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:06:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 8641 states and 13103 transitions. [2019-10-14 22:06:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-14 22:06:44,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:44,842 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] [2019-10-14 22:06:45,045 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:06:45,049 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:45,049 INFO L82 PathProgramCache]: Analyzing trace with hash 980263212, now seen corresponding path program 1 times [2019-10-14 22:06:45,049 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:45,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417350363] [2019-10-14 22:06:45,049 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:45,050 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:45,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:45,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417350363] [2019-10-14 22:06:45,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:45,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:06:45,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175884767] [2019-10-14 22:06:45,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:06:45,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:45,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:06:45,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:45,560 INFO L87 Difference]: Start difference. First operand 8641 states and 13103 transitions. Second operand 9 states.