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/Problem12_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:01:51,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:01:51,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:01:51,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:01:51,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:01:51,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:01:51,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:01:51,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:01:51,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:01:51,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:01:51,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:01:51,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:01:51,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:01:51,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:01:51,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:01:51,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:01:51,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:01:51,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:01:51,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:01:51,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:01:51,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:01:51,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:01:51,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:01:51,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:01:51,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:01:51,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:01:51,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:01:51,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:01:51,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:01:51,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:01:51,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:01:51,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:01:51,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:01:51,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:01:51,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:01:51,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:01:51,950 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 18:01:51,965 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:01:51,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:01:51,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:01:51,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:01:51,967 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:01:51,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:01:51,967 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:01:51,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:01:51,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:01:51,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:01:51,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:01:51,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:01:51,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:01:51,968 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:01:51,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:01:51,969 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:01:51,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:01:51,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:01:51,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:01:51,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:01:51,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:01:51,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:01:51,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:01:51,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:01:51,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:01:51,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:01:51,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:01:51,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:01:51,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:01:52,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:01:52,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:01:52,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:01:52,260 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:01:52,260 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:01:52,261 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-10-13 18:01:52,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cae49378/dfac25e0f76240a3ac15a8e06084cbe1/FLAG98b050437 [2019-10-13 18:01:53,143 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:01:53,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2019-10-13 18:01:53,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cae49378/dfac25e0f76240a3ac15a8e06084cbe1/FLAG98b050437 [2019-10-13 18:01:53,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cae49378/dfac25e0f76240a3ac15a8e06084cbe1 [2019-10-13 18:01:53,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:01:53,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:01:53,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:01:53,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:01:53,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:01:53,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:53" (1/1) ... [2019-10-13 18:01:53,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fc0240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:53, skipping insertion in model container [2019-10-13 18:01:53,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:53" (1/1) ... [2019-10-13 18:01:53,287 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:01:53,439 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:01:54,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:01:54,958 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:01:55,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:01:55,648 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:01:55,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55 WrapperNode [2019-10-13 18:01:55,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:01:55,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:01:55,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:01:55,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:01:55,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (1/1) ... [2019-10-13 18:01:55,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (1/1) ... [2019-10-13 18:01:55,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (1/1) ... [2019-10-13 18:01:55,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (1/1) ... [2019-10-13 18:01:55,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (1/1) ... [2019-10-13 18:01:55,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (1/1) ... [2019-10-13 18:01:55,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (1/1) ... [2019-10-13 18:01:55,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:01:55,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:01:55,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:01:55,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:01:55,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (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 18:01:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:01:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:01:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:01:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:01:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:01:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-13 18:01:55,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:01:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:01:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:01:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:01:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-13 18:01:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:01:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:01:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:01:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:01:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:01:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:02:00,779 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:02:00,780 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:02:00,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:02:00 BoogieIcfgContainer [2019-10-13 18:02:00,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:02:00,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:02:00,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:02:00,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:02:00,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:01:53" (1/3) ... [2019-10-13 18:02:00,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3624753a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:02:00, skipping insertion in model container [2019-10-13 18:02:00,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:55" (2/3) ... [2019-10-13 18:02:00,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3624753a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:02:00, skipping insertion in model container [2019-10-13 18:02:00,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:02:00" (3/3) ... [2019-10-13 18:02:00,801 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label49.c [2019-10-13 18:02:00,813 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:02:00,827 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:02:00,838 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:02:00,881 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:02:00,881 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:02:00,881 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:02:00,881 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:02:00,882 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:02:00,882 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:02:00,882 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:02:00,882 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:02:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-13 18:02:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-13 18:02:01,005 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:02:01,006 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:02:01,008 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:02:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:02:01,014 INFO L82 PathProgramCache]: Analyzing trace with hash 838851165, now seen corresponding path program 1 times [2019-10-13 18:02:01,022 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:02:01,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597319649] [2019-10-13 18:02:01,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:02:01,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:02:01,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:02:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:01,413 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 18:02:01,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597319649] [2019-10-13 18:02:01,414 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:02:01,415 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:02:01,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419399706] [2019-10-13 18:02:01,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:02:01,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:02:01,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:02:01,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:02:01,443 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-10-13 18:02:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:02:10,115 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2019-10-13 18:02:10,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 18:02:10,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-10-13 18:02:10,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:02:10,149 INFO L225 Difference]: With dead ends: 2471 [2019-10-13 18:02:10,149 INFO L226 Difference]: Without dead ends: 1568 [2019-10-13 18:02:10,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 18:02:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2019-10-13 18:02:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2019-10-13 18:02:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2019-10-13 18:02:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2869 transitions. [2019-10-13 18:02:10,307 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2869 transitions. Word has length 48 [2019-10-13 18:02:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:02:10,308 INFO L462 AbstractCegarLoop]: Abstraction has 1553 states and 2869 transitions. [2019-10-13 18:02:10,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:02:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2869 transitions. [2019-10-13 18:02:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 18:02:10,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:02:10,315 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:10,315 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:02:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:02:10,316 INFO L82 PathProgramCache]: Analyzing trace with hash 728529281, now seen corresponding path program 1 times [2019-10-13 18:02:10,316 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:02:10,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851250322] [2019-10-13 18:02:10,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:02:10,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:02:10,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:02:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:02:10,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851250322] [2019-10-13 18:02:10,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:02:10,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:02:10,701 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843002818] [2019-10-13 18:02:10,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:02:10,708 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:02:10,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:02:10,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:02:10,709 INFO L87 Difference]: Start difference. First operand 1553 states and 2869 transitions. Second operand 9 states. [2019-10-13 18:02:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:02:23,677 INFO L93 Difference]: Finished difference Result 6335 states and 11853 transitions. [2019-10-13 18:02:23,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:02:23,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-10-13 18:02:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:02:23,708 INFO L225 Difference]: With dead ends: 6335 [2019-10-13 18:02:23,708 INFO L226 Difference]: Without dead ends: 4788 [2019-10-13 18:02:23,714 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:02:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2019-10-13 18:02:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4748. [2019-10-13 18:02:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2019-10-13 18:02:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 7752 transitions. [2019-10-13 18:02:23,852 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 7752 transitions. Word has length 125 [2019-10-13 18:02:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:02:23,853 INFO L462 AbstractCegarLoop]: Abstraction has 4748 states and 7752 transitions. [2019-10-13 18:02:23,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:02:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 7752 transitions. [2019-10-13 18:02:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 18:02:23,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:02:23,858 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:23,859 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:02:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:02:23,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1145162067, now seen corresponding path program 1 times [2019-10-13 18:02:23,859 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:02:23,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120695116] [2019-10-13 18:02:23,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:02:23,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:02:23,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:02:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:02:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:02:24,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120695116] [2019-10-13 18:02:24,109 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:02:24,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 18:02:24,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600034112] [2019-10-13 18:02:24,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 18:02:24,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:02:24,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 18:02:24,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:02:24,127 INFO L87 Difference]: Start difference. First operand 4748 states and 7752 transitions. Second operand 7 states.