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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:07:16,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:07:16,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:07:16,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:07:16,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:07:16,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:07:16,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:07:16,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:07:16,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:07:16,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:07:16,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:07:16,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:07:16,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:07:16,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:07:16,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:07:16,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:07:16,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:07:16,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:07:16,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:07:16,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:07:16,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:07:16,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:07:16,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:07:16,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:07:16,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:07:16,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:07:16,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:07:16,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:07:16,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:07:16,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:07:16,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:07:16,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:07:16,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:07:16,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:07:16,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:07:16,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:07:16,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:07:16,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:07:16,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:07:16,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:07:16,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:07:16,650 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:07:16,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:07:16,651 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:07:16,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:07:16,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:07:16,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:07:16,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:07:16,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:07:16,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:07:16,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:07:16,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:07:16,653 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:07:16,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:07:16,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:07:16,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:07:16,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:07:16,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:07:16,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:16,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:07:16,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:07:16,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:07:16,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:07:16,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:07:16,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:07:16,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:07:16,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:07:16,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:07:16,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:07:16,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:07:16,978 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:07:16,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2019-10-13 18:07:17,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5adb9bc3/3dda4034b5bd48b7aaf3c92022e87971/FLAGe458cd203 [2019-10-13 18:07:17,771 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:07:17,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label44.c [2019-10-13 18:07:17,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5adb9bc3/3dda4034b5bd48b7aaf3c92022e87971/FLAGe458cd203 [2019-10-13 18:07:17,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5adb9bc3/3dda4034b5bd48b7aaf3c92022e87971 [2019-10-13 18:07:17,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:07:17,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:07:17,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:17,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:07:17,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:07:17,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:17" (1/1) ... [2019-10-13 18:07:17,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fe3b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:17, skipping insertion in model container [2019-10-13 18:07:17,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:07:17" (1/1) ... [2019-10-13 18:07:17,943 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:07:18,067 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:07:19,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:19,486 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:07:19,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:07:19,997 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:07:19,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19 WrapperNode [2019-10-13 18:07:19,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:07:19,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:07:19,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:07:19,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:07:20,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... [2019-10-13 18:07:20,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... [2019-10-13 18:07:20,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... [2019-10-13 18:07:20,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... [2019-10-13 18:07:20,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... [2019-10-13 18:07:20,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... [2019-10-13 18:07:20,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... [2019-10-13 18:07:20,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:07:20,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:07:20,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:07:20,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:07:20,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:07:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:07:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:07:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:07:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:07:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-13 18:07:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:07:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:07:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:07:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-13 18:07:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:07:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:07:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:07:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:07:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:07:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:07:24,126 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:07:24,126 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:07:24,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:24 BoogieIcfgContainer [2019-10-13 18:07:24,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:07:24,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:07:24,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:07:24,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:07:24,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:07:17" (1/3) ... [2019-10-13 18:07:24,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed16e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:24, skipping insertion in model container [2019-10-13 18:07:24,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:07:19" (2/3) ... [2019-10-13 18:07:24,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed16e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:07:24, skipping insertion in model container [2019-10-13 18:07:24,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:07:24" (3/3) ... [2019-10-13 18:07:24,140 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label44.c [2019-10-13 18:07:24,153 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:07:24,164 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:07:24,178 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:07:24,223 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:07:24,223 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:07:24,223 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:07:24,224 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:07:24,224 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:07:24,224 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:07:24,224 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:07:24,224 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:07:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 18:07:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 18:07:24,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:24,276 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] [2019-10-13 18:07:24,278 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:24,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1139178023, now seen corresponding path program 1 times [2019-10-13 18:07:24,293 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:24,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552136571] [2019-10-13 18:07:24,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:24,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:24,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:24,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552136571] [2019-10-13 18:07:24,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:24,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:07:24,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973795128] [2019-10-13 18:07:24,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:07:24,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:24,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:07:24,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:07:24,628 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-10-13 18:07:35,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:35,037 INFO L93 Difference]: Finished difference Result 3000 states and 5781 transitions. [2019-10-13 18:07:35,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:07:35,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-13 18:07:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:35,072 INFO L225 Difference]: With dead ends: 3000 [2019-10-13 18:07:35,072 INFO L226 Difference]: Without dead ends: 2142 [2019-10-13 18:07:35,082 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 [2019-10-13 18:07:35,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-10-13 18:07:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1428. [2019-10-13 18:07:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2019-10-13 18:07:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2019-10-13 18:07:35,246 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 38 [2019-10-13 18:07:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:35,247 INFO L462 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2019-10-13 18:07:35,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:07:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2019-10-13 18:07:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 18:07:35,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:35,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:07:35,270 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1991333515, now seen corresponding path program 1 times [2019-10-13 18:07:35,271 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:35,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360868543] [2019-10-13 18:07:35,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:35,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:35,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:35,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360868543] [2019-10-13 18:07:35,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:07:35,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:07:35,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130451907] [2019-10-13 18:07:35,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:07:35,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:35,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:07:35,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:07:35,637 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand 8 states. [2019-10-13 18:07:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:07:46,637 INFO L93 Difference]: Finished difference Result 5784 states and 9265 transitions. [2019-10-13 18:07:46,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:07:46,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-13 18:07:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:07:46,662 INFO L225 Difference]: With dead ends: 5784 [2019-10-13 18:07:46,662 INFO L226 Difference]: Without dead ends: 4362 [2019-10-13 18:07:46,667 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 [2019-10-13 18:07:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2019-10-13 18:07:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2019-10-13 18:07:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4345 states. [2019-10-13 18:07:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5982 transitions. [2019-10-13 18:07:46,806 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5982 transitions. Word has length 107 [2019-10-13 18:07:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:07:46,807 INFO L462 AbstractCegarLoop]: Abstraction has 4345 states and 5982 transitions. [2019-10-13 18:07:46,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:07:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5982 transitions. [2019-10-13 18:07:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 18:07:46,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:07:46,820 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:07:46,821 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:07:46,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:07:46,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1003175174, now seen corresponding path program 1 times [2019-10-13 18:07:46,822 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:07:46,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847202912] [2019-10-13 18:07:46,823 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:46,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:07:46,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:07:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:07:47,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847202912] [2019-10-13 18:07:47,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956142611] [2019-10-13 18:07:47,335 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 [2019-10-13 18:07:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:07:47,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:07:47,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:07:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:07:47,630 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:07:47,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:07:47,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413616489] [2019-10-13 18:07:47,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:07:47,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:07:47,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:07:47,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:07:47,635 INFO L87 Difference]: Start difference. First operand 4345 states and 5982 transitions. Second operand 11 states.