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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:05:36,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:05:36,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:05:36,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:05:36,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:05:36,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:05:36,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:05:36,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:05:36,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:05:36,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:05:36,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:05:36,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:05:36,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:05:36,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:05:36,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:05:36,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:05:36,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:05:36,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:05:36,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:05:36,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:05:36,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:05:36,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:05:36,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:05:36,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:05:36,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:05:36,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:05:36,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:05:36,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:05:36,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:05:36,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:05:36,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:05:36,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:05:36,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:05:36,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:05:36,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:05:36,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:05:36,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:05:36,348 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:05:36,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:05:36,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:05:36,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:05:36,350 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:05:36,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:05:36,350 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:05:36,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:05:36,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:05:36,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:05:36,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:05:36,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:05:36,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:05:36,352 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:05:36,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:05:36,352 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:05:36,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:05:36,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:05:36,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:05:36,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:05:36,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:05:36,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:05:36,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:05:36,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:05:36,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:05:36,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:05:36,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:05:36,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:05:36,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:05:36,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:05:36,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:05:36,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:05:36,658 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:05:36,658 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:05:36,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2019-10-14 22:05:36,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5b8b437/71feead670584b688370ce2a29fea45d/FLAGb843fbad8 [2019-10-14 22:05:37,456 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:05:37,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2019-10-14 22:05:37,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5b8b437/71feead670584b688370ce2a29fea45d/FLAGb843fbad8 [2019-10-14 22:05:37,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5b8b437/71feead670584b688370ce2a29fea45d [2019-10-14 22:05:37,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:05:37,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:05:37,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:37,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:05:37,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:05:37,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:37" (1/1) ... [2019-10-14 22:05:37,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9fb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:37, skipping insertion in model container [2019-10-14 22:05:37,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:05:37" (1/1) ... [2019-10-14 22:05:37,611 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:05:37,725 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:05:38,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:38,825 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:05:39,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:05:39,387 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:05:39,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39 WrapperNode [2019-10-14 22:05:39,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:05:39,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:05:39,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:05:39,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:05:39,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... [2019-10-14 22:05:39,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... [2019-10-14 22:05:39,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... [2019-10-14 22:05:39,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... [2019-10-14 22:05:39,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... [2019-10-14 22:05:39,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... [2019-10-14 22:05:39,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... [2019-10-14 22:05:39,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:05:39,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:05:39,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:05:39,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:05:39,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:05:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:05:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:05:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:05:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:05:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:05:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:05:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:05:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:05:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:05:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:05:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:05:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:05:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:05:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:05:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:05:43,373 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:05:43,373 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:05:43,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:43 BoogieIcfgContainer [2019-10-14 22:05:43,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:05:43,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:05:43,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:05:43,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:05:43,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:05:37" (1/3) ... [2019-10-14 22:05:43,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51de864f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:43, skipping insertion in model container [2019-10-14 22:05:43,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:05:39" (2/3) ... [2019-10-14 22:05:43,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51de864f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:05:43, skipping insertion in model container [2019-10-14 22:05:43,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:05:43" (3/3) ... [2019-10-14 22:05:43,399 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label21.c [2019-10-14 22:05:43,413 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:05:43,423 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:05:43,435 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:05:43,553 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:05:43,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:05:43,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:05:43,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:05:43,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:05:43,554 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:05:43,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:05:43,554 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:05:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-14 22:05:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-14 22:05:43,603 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:43,604 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] [2019-10-14 22:05:43,606 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash -242469919, now seen corresponding path program 1 times [2019-10-14 22:05:43,621 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:43,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683720249] [2019-10-14 22:05:43,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:43,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:43,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:44,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683720249] [2019-10-14 22:05:44,033 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:44,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:05:44,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460361598] [2019-10-14 22:05:44,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:05:44,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:44,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:05:44,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:05:44,063 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-14 22:05:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:05:53,713 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-10-14 22:05:53,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:05:53,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-10-14 22:05:53,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:05:53,748 INFO L225 Difference]: With dead ends: 2984 [2019-10-14 22:05:53,748 INFO L226 Difference]: Without dead ends: 2142 [2019-10-14 22:05:53,759 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 22:05:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-14 22:05:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-10-14 22:05:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-10-14 22:05:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-10-14 22:05:53,934 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 64 [2019-10-14 22:05:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:05:53,935 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-10-14 22:05:53,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:05:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-10-14 22:05:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 22:05:53,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:05:53,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:05:53,945 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:05:53,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:05:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1527115477, now seen corresponding path program 1 times [2019-10-14 22:05:53,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:05:53,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922889966] [2019-10-14 22:05:53,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:53,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:05:53,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:05:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:05:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:05:54,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922889966] [2019-10-14 22:05:54,287 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:05:54,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:05:54,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812032596] [2019-10-14 22:05:54,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:05:54,290 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:05:54,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:05:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:05:54,291 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-10-14 22:06:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:05,675 INFO L93 Difference]: Finished difference Result 8648 states and 15579 transitions. [2019-10-14 22:06:05,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:06:05,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-14 22:06:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:05,752 INFO L225 Difference]: With dead ends: 8648 [2019-10-14 22:06:05,753 INFO L226 Difference]: Without dead ends: 6522 [2019-10-14 22:06:05,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:06:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2019-10-14 22:06:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 6483. [2019-10-14 22:06:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6483 states. [2019-10-14 22:06:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6483 states to 6483 states and 10418 transitions. [2019-10-14 22:06:05,967 INFO L78 Accepts]: Start accepts. Automaton has 6483 states and 10418 transitions. Word has length 137 [2019-10-14 22:06:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:05,970 INFO L462 AbstractCegarLoop]: Abstraction has 6483 states and 10418 transitions. [2019-10-14 22:06:05,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:06:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6483 states and 10418 transitions. [2019-10-14 22:06:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-14 22:06:05,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:05,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:05,989 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1106833084, now seen corresponding path program 1 times [2019-10-14 22:06:05,991 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:05,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11334203] [2019-10-14 22:06:05,991 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:05,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:05,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:06,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11334203] [2019-10-14 22:06:06,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:06,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:06:06,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50868507] [2019-10-14 22:06:06,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:06:06,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:06,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:06:06,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:06:06,566 INFO L87 Difference]: Start difference. First operand 6483 states and 10418 transitions. Second operand 9 states. [2019-10-14 22:06:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:13,582 INFO L93 Difference]: Finished difference Result 15225 states and 24469 transitions. [2019-10-14 22:06:13,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:06:13,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2019-10-14 22:06:13,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:13,626 INFO L225 Difference]: With dead ends: 15225 [2019-10-14 22:06:13,626 INFO L226 Difference]: Without dead ends: 8748 [2019-10-14 22:06:13,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:06:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8748 states.