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_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:06:28,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:06:28,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:06:28,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:06:28,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:06:28,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:06:28,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:06:28,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:06:28,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:06:28,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:06:28,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:06:28,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:06:28,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:06:28,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:06:28,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:06:28,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:06:28,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:06:28,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:06:28,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:06:28,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:06:28,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:06:28,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:06:28,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:06:28,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:06:28,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:06:28,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:06:28,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:06:28,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:06:28,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:06:28,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:06:28,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:06:28,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:06:28,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:06:28,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:06:28,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:06:28,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:06:28,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:06:28,366 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:06:28,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:06:28,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:06:28,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:06:28,369 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:06:28,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:06:28,370 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:06:28,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:06:28,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:06:28,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:06:28,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:06:28,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:06:28,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:06:28,372 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:06:28,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:06:28,372 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:06:28,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:06:28,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:06:28,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:06:28,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:06:28,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:06:28,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:06:28,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:06:28,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:06:28,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:06:28,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:06:28,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:06:28,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:06:28,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:06:28,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:06:28,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:06:28,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:06:28,663 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:06:28,664 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:06:28,664 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-10-14 22:06:28,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222a19472/4aae780e8db444159eb72ad879f60ad7/FLAGffaf2de03 [2019-10-14 22:06:29,532 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:06:29,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label59.c [2019-10-14 22:06:29,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222a19472/4aae780e8db444159eb72ad879f60ad7/FLAGffaf2de03 [2019-10-14 22:06:29,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222a19472/4aae780e8db444159eb72ad879f60ad7 [2019-10-14 22:06:29,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:06:29,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:06:29,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:29,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:06:29,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:06:29,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:29" (1/1) ... [2019-10-14 22:06:29,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bca6166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:29, skipping insertion in model container [2019-10-14 22:06:29,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:29" (1/1) ... [2019-10-14 22:06:29,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:06:29,760 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:06:30,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:30,981 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:06:31,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:06:31,557 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:06:31,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31 WrapperNode [2019-10-14 22:06:31,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:06:31,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:06:31,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:06:31,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:06:31,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... [2019-10-14 22:06:31,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... [2019-10-14 22:06:31,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... [2019-10-14 22:06:31,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... [2019-10-14 22:06:31,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... [2019-10-14 22:06:31,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... [2019-10-14 22:06:31,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... [2019-10-14 22:06:31,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:06:31,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:06:31,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:06:31,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:06:31,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:06:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:06:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:06:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:06:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:06:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:06:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:06:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:06:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:06:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:06:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:06:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:06:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:06:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:06:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:06:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:06:35,710 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:06:35,710 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:06:35,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:35 BoogieIcfgContainer [2019-10-14 22:06:35,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:06:35,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:06:35,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:06:35,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:06:35,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:06:29" (1/3) ... [2019-10-14 22:06:35,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214c8cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:35, skipping insertion in model container [2019-10-14 22:06:35,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:31" (2/3) ... [2019-10-14 22:06:35,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214c8cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:35, skipping insertion in model container [2019-10-14 22:06:35,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:35" (3/3) ... [2019-10-14 22:06:35,727 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label59.c [2019-10-14 22:06:35,739 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:06:35,750 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:06:35,763 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:06:35,805 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:06:35,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:06:35,805 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:06:35,805 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:06:35,806 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:06:35,806 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:06:35,806 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:06:35,806 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:06:35,849 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-14 22:06:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 22:06:35,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:35,859 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] [2019-10-14 22:06:35,861 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:35,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:35,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1601296886, now seen corresponding path program 1 times [2019-10-14 22:06:35,875 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:35,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719462464] [2019-10-14 22:06:35,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:35,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:35,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:36,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719462464] [2019-10-14 22:06:36,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:36,314 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:06:36,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954241367] [2019-10-14 22:06:36,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:06:36,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:36,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:06:36,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:06:36,337 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-14 22:06:43,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:43,144 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2019-10-14 22:06:43,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:06:43,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-14 22:06:43,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:43,179 INFO L225 Difference]: With dead ends: 2270 [2019-10-14 22:06:43,179 INFO L226 Difference]: Without dead ends: 1432 [2019-10-14 22:06:43,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:06:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-10-14 22:06:43,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2019-10-14 22:06:43,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2019-10-14 22:06:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2019-10-14 22:06:43,320 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 43 [2019-10-14 22:06:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:43,321 INFO L462 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2019-10-14 22:06:43,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:06:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2019-10-14 22:06:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-14 22:06:43,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:43,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:43,327 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:43,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1229064497, now seen corresponding path program 1 times [2019-10-14 22:06:43,328 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:43,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672088287] [2019-10-14 22:06:43,328 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:43,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:43,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:43,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672088287] [2019-10-14 22:06:43,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:43,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:06:43,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2485454] [2019-10-14 22:06:43,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:06:43,581 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:43,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:06:43,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:06:43,582 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand 8 states. [2019-10-14 22:06:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:06:53,863 INFO L93 Difference]: Finished difference Result 5772 states and 10805 transitions. [2019-10-14 22:06:53,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:06:53,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2019-10-14 22:06:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:06:53,889 INFO L225 Difference]: With dead ends: 5772 [2019-10-14 22:06:53,889 INFO L226 Difference]: Without dead ends: 4353 [2019-10-14 22:06:53,894 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:06:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2019-10-14 22:06:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 4331. [2019-10-14 22:06:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4331 states. [2019-10-14 22:06:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6682 transitions. [2019-10-14 22:06:54,018 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6682 transitions. Word has length 112 [2019-10-14 22:06:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:06:54,019 INFO L462 AbstractCegarLoop]: Abstraction has 4331 states and 6682 transitions. [2019-10-14 22:06:54,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:06:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6682 transitions. [2019-10-14 22:06:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-14 22:06:54,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:06:54,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:54,023 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:06:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:06:54,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1998315758, now seen corresponding path program 1 times [2019-10-14 22:06:54,023 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:06:54,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283912587] [2019-10-14 22:06:54,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:54,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:06:54,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:06:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:06:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:06:54,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283912587] [2019-10-14 22:06:54,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:06:54,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:06:54,226 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435099403] [2019-10-14 22:06:54,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:06:54,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:06:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:06:54,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:06:54,241 INFO L87 Difference]: Start difference. First operand 4331 states and 6682 transitions. Second operand 8 states. [2019-10-14 22:07:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:08,349 INFO L93 Difference]: Finished difference Result 16982 states and 28444 transitions. [2019-10-14 22:07:08,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 22:07:08,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-14 22:07:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:08,525 INFO L225 Difference]: With dead ends: 16982 [2019-10-14 22:07:08,526 INFO L226 Difference]: Without dead ends: 12657 [2019-10-14 22:07:08,540 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 22:07:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12657 states.