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/Problem15_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:03:02,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:03:02,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:03:02,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:03:02,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:03:02,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:03:02,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:03:02,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:03:02,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:03:02,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:03:02,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:03:02,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:03:02,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:03:02,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:03:02,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:03:02,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:03:02,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:03:02,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:03:02,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:03:02,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:03:02,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:03:02,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:03:02,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:03:02,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:03:02,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:03:02,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:03:02,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:03:02,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:03:02,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:03:02,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:03:02,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:03:02,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:03:02,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:03:02,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:03:02,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:03:02,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:03:02,124 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 22:03:02,157 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:03:02,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:03:02,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:03:02,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:03:02,162 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:03:02,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:03:02,163 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:03:02,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:03:02,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:03:02,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:03:02,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:03:02,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:03:02,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:03:02,164 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:03:02,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:03:02,165 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:03:02,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:03:02,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:03:02,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:03:02,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:03:02,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:03:02,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:03:02,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:03:02,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:03:02,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:03:02,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:03:02,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:03:02,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:03:02,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:03:02,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:03:02,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:03:02,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:03:02,481 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:03:02,482 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:03:02,482 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2019-10-14 22:03:02,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88824ab9e/2ec91c1bdcf947cb921bc9496a9c29f9/FLAG4185a0a51 [2019-10-14 22:03:03,206 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:03:03,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2019-10-14 22:03:03,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88824ab9e/2ec91c1bdcf947cb921bc9496a9c29f9/FLAG4185a0a51 [2019-10-14 22:03:03,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88824ab9e/2ec91c1bdcf947cb921bc9496a9c29f9 [2019-10-14 22:03:03,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:03:03,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:03:03,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:03,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:03:03,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:03:03,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:03" (1/1) ... [2019-10-14 22:03:03,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4522c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:03, skipping insertion in model container [2019-10-14 22:03:03,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:03" (1/1) ... [2019-10-14 22:03:03,438 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:03:03,529 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:03:04,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:04,499 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:03:04,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:03:04,793 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:03:04,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04 WrapperNode [2019-10-14 22:03:04,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:03:04,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:03:04,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:03:04,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:03:04,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2019-10-14 22:03:04,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2019-10-14 22:03:04,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2019-10-14 22:03:04,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2019-10-14 22:03:04,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2019-10-14 22:03:04,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2019-10-14 22:03:04,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2019-10-14 22:03:05,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:03:05,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:03:05,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:03:05,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:03:05,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (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 22:03:05,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:03:05,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:03:05,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:03:05,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:03:05,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:03:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:03:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:03:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:03:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:03:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:03:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:03:08,512 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:03:08,513 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:03:08,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:08 BoogieIcfgContainer [2019-10-14 22:03:08,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:03:08,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:03:08,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:03:08,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:03:08,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:03" (1/3) ... [2019-10-14 22:03:08,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615faa48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:08, skipping insertion in model container [2019-10-14 22:03:08,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (2/3) ... [2019-10-14 22:03:08,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615faa48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:08, skipping insertion in model container [2019-10-14 22:03:08,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:08" (3/3) ... [2019-10-14 22:03:08,536 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label31.c [2019-10-14 22:03:08,547 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:03:08,558 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:03:08,570 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:03:08,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:03:08,613 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:03:08,613 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:03:08,613 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:03:08,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:03:08,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:03:08,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:03:08,613 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:03:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-10-14 22:03:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-14 22:03:08,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:08,652 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, 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 22:03:08,654 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:08,660 INFO L82 PathProgramCache]: Analyzing trace with hash 2120890949, now seen corresponding path program 1 times [2019-10-14 22:03:08,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:08,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588960458] [2019-10-14 22:03:08,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:08,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:08,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:09,203 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 22:03:09,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588960458] [2019-10-14 22:03:09,205 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:09,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:03:09,206 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136154653] [2019-10-14 22:03:09,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:03:09,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:09,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:03:09,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:03:09,232 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2019-10-14 22:03:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:15,385 INFO L93 Difference]: Finished difference Result 1575 states and 2878 transitions. [2019-10-14 22:03:15,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:03:15,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-10-14 22:03:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:15,432 INFO L225 Difference]: With dead ends: 1575 [2019-10-14 22:03:15,432 INFO L226 Difference]: Without dead ends: 1055 [2019-10-14 22:03:15,449 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 22:03:15,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2019-10-14 22:03:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1024. [2019-10-14 22:03:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2019-10-14 22:03:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1749 transitions. [2019-10-14 22:03:15,607 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1749 transitions. Word has length 71 [2019-10-14 22:03:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:15,609 INFO L462 AbstractCegarLoop]: Abstraction has 1024 states and 1749 transitions. [2019-10-14 22:03:15,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:03:15,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1749 transitions. [2019-10-14 22:03:15,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-14 22:03:15,628 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:15,629 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, 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] [2019-10-14 22:03:15,629 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1052620642, now seen corresponding path program 1 times [2019-10-14 22:03:15,630 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:15,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852646092] [2019-10-14 22:03:15,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:15,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:15,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:15,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852646092] [2019-10-14 22:03:15,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238223549] [2019-10-14 22:03:15,948 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 22:03:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:16,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:03:16,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:03:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:16,121 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:03:16,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:03:16,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216809795] [2019-10-14 22:03:16,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:03:16,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:16,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:03:16,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:03:16,125 INFO L87 Difference]: Start difference. First operand 1024 states and 1749 transitions. Second operand 3 states. [2019-10-14 22:03:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:18,490 INFO L93 Difference]: Finished difference Result 2976 states and 5156 transitions. [2019-10-14 22:03:18,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:03:18,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-10-14 22:03:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:18,503 INFO L225 Difference]: With dead ends: 2976 [2019-10-14 22:03:18,503 INFO L226 Difference]: Without dead ends: 1958 [2019-10-14 22:03:18,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:03:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2019-10-14 22:03:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1955. [2019-10-14 22:03:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1955 states. [2019-10-14 22:03:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 2868 transitions. [2019-10-14 22:03:18,565 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 2868 transitions. Word has length 140 [2019-10-14 22:03:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:18,566 INFO L462 AbstractCegarLoop]: Abstraction has 1955 states and 2868 transitions. [2019-10-14 22:03:18,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:03:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 2868 transitions. [2019-10-14 22:03:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-14 22:03:18,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:18,569 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, 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] [2019-10-14 22:03:18,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:18,775 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:18,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:18,776 INFO L82 PathProgramCache]: Analyzing trace with hash -737037300, now seen corresponding path program 1 times [2019-10-14 22:03:18,777 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:18,777 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022933159] [2019-10-14 22:03:18,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:18,777 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:18,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:19,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022933159] [2019-10-14 22:03:19,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:03:19,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:03:19,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069099054] [2019-10-14 22:03:19,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:03:19,118 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:03:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:03:19,119 INFO L87 Difference]: Start difference. First operand 1955 states and 2868 transitions. Second operand 8 states. [2019-10-14 22:03:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:25,127 INFO L93 Difference]: Finished difference Result 5861 states and 8774 transitions. [2019-10-14 22:03:25,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 22:03:25,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 157 [2019-10-14 22:03:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:25,154 INFO L225 Difference]: With dead ends: 5861 [2019-10-14 22:03:25,155 INFO L226 Difference]: Without dead ends: 3912 [2019-10-14 22:03:25,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:03:25,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2019-10-14 22:03:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 2934. [2019-10-14 22:03:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2019-10-14 22:03:25,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4016 transitions. [2019-10-14 22:03:25,299 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4016 transitions. Word has length 157 [2019-10-14 22:03:25,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:25,300 INFO L462 AbstractCegarLoop]: Abstraction has 2934 states and 4016 transitions. [2019-10-14 22:03:25,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:03:25,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4016 transitions. [2019-10-14 22:03:25,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2019-10-14 22:03:25,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:25,308 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:25,309 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:25,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2140205233, now seen corresponding path program 1 times [2019-10-14 22:03:25,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:25,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702491704] [2019-10-14 22:03:25,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:25,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:25,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:25,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702491704] [2019-10-14 22:03:25,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50834784] [2019-10-14 22:03:25,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:25,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:03:25,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:03:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:03:26,051 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:03:26,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:03:26,052 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341788233] [2019-10-14 22:03:26,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:03:26,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:26,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:03:26,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:03:26,054 INFO L87 Difference]: Start difference. First operand 2934 states and 4016 transitions. Second operand 3 states. [2019-10-14 22:03:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:28,384 INFO L93 Difference]: Finished difference Result 7426 states and 10578 transitions. [2019-10-14 22:03:28,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:03:28,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 345 [2019-10-14 22:03:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:28,412 INFO L225 Difference]: With dead ends: 7426 [2019-10-14 22:03:28,412 INFO L226 Difference]: Without dead ends: 4498 [2019-10-14 22:03:28,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:03:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2019-10-14 22:03:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4495. [2019-10-14 22:03:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4495 states. [2019-10-14 22:03:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 6012 transitions. [2019-10-14 22:03:28,566 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 6012 transitions. Word has length 345 [2019-10-14 22:03:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:28,569 INFO L462 AbstractCegarLoop]: Abstraction has 4495 states and 6012 transitions. [2019-10-14 22:03:28,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:03:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 6012 transitions. [2019-10-14 22:03:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2019-10-14 22:03:28,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:28,580 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 22:03:28,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:28,784 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:28,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:28,785 INFO L82 PathProgramCache]: Analyzing trace with hash 903358243, now seen corresponding path program 1 times [2019-10-14 22:03:28,785 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:28,786 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494824870] [2019-10-14 22:03:28,786 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:28,786 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:28,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-14 22:03:29,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494824870] [2019-10-14 22:03:29,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365458167] [2019-10-14 22:03:29,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:29,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:03:29,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:03:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-14 22:03:29,923 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:03:29,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-14 22:03:29,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739263701] [2019-10-14 22:03:29,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:03:29,925 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:03:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:03:29,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:03:29,926 INFO L87 Difference]: Start difference. First operand 4495 states and 6012 transitions. Second operand 11 states. [2019-10-14 22:03:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:03:41,054 INFO L93 Difference]: Finished difference Result 13394 states and 21471 transitions. [2019-10-14 22:03:41,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-14 22:03:41,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 437 [2019-10-14 22:03:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:03:41,116 INFO L225 Difference]: With dead ends: 13394 [2019-10-14 22:03:41,117 INFO L226 Difference]: Without dead ends: 8905 [2019-10-14 22:03:41,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 452 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2019-10-14 22:03:41,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2019-10-14 22:03:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8155. [2019-10-14 22:03:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8155 states. [2019-10-14 22:03:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8155 states to 8155 states and 11732 transitions. [2019-10-14 22:03:41,495 INFO L78 Accepts]: Start accepts. Automaton has 8155 states and 11732 transitions. Word has length 437 [2019-10-14 22:03:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:03:41,496 INFO L462 AbstractCegarLoop]: Abstraction has 8155 states and 11732 transitions. [2019-10-14 22:03:41,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:03:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 8155 states and 11732 transitions. [2019-10-14 22:03:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2019-10-14 22:03:41,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:03:41,516 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-14 22:03:41,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:03:41,721 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:03:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:03:41,722 INFO L82 PathProgramCache]: Analyzing trace with hash -939917433, now seen corresponding path program 1 times [2019-10-14 22:03:41,722 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:03:41,726 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205866218] [2019-10-14 22:03:41,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:41,726 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:03:41,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:03:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:03:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2019-10-14 22:03:42,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205866218] [2019-10-14 22:03:42,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999572269] [2019-10-14 22:03:42,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true