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/Problem11_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:00:24,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:00:24,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:00:24,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:00:24,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:00:24,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:00:24,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:00:24,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:00:24,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:00:24,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:00:24,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:00:24,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:00:24,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:00:24,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:00:24,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:00:24,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:00:24,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:00:24,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:00:24,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:00:24,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:00:24,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:00:24,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:00:24,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:00:24,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:00:24,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:00:24,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:00:24,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:00:24,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:00:24,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:00:24,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:00:24,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:00:24,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:00:24,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:00:24,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:00:24,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:00:24,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:00:24,880 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 18:00:24,904 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:00:24,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:00:24,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:00:24,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:00:24,906 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:00:24,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:00:24,907 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:00:24,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:00:24,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:00:24,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:00:24,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:00:24,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:00:24,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:00:24,909 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:00:24,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:00:24,909 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:00:24,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:00:24,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:00:24,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:00:24,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:00:24,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:00:24,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:00:24,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:00:24,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:00:24,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:00:24,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:00:24,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:00:24,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:00:24,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:00:25,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:00:25,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:00:25,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:00:25,227 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:00:25,228 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:00:25,228 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label33.c [2019-10-13 18:00:25,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d357780d7/e2b0b29869d44564872323490f731fff/FLAG57c53a5cf [2019-10-13 18:00:25,832 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:00:25,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label33.c [2019-10-13 18:00:25,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d357780d7/e2b0b29869d44564872323490f731fff/FLAG57c53a5cf [2019-10-13 18:00:26,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d357780d7/e2b0b29869d44564872323490f731fff [2019-10-13 18:00:26,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:00:26,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:00:26,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:00:26,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:00:26,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:00:26,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:00:26" (1/1) ... [2019-10-13 18:00:26,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7639f8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:26, skipping insertion in model container [2019-10-13 18:00:26,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:00:26" (1/1) ... [2019-10-13 18:00:26,141 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:00:26,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:00:26,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:00:26,914 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:00:27,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:00:27,213 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:00:27,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27 WrapperNode [2019-10-13 18:00:27,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:00:27,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:00:27,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:00:27,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:00:27,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (1/1) ... [2019-10-13 18:00:27,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (1/1) ... [2019-10-13 18:00:27,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (1/1) ... [2019-10-13 18:00:27,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (1/1) ... [2019-10-13 18:00:27,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (1/1) ... [2019-10-13 18:00:27,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (1/1) ... [2019-10-13 18:00:27,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (1/1) ... [2019-10-13 18:00:27,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:00:27,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:00:27,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:00:27,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:00:27,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (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 18:00:27,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:00:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:00:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:00:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:00:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:00:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:00:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:00:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:00:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:00:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:00:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:00:29,171 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:00:29,171 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:00:29,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:00:29 BoogieIcfgContainer [2019-10-13 18:00:29,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:00:29,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:00:29,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:00:29,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:00:29,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:00:26" (1/3) ... [2019-10-13 18:00:29,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ead436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:00:29, skipping insertion in model container [2019-10-13 18:00:29,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27" (2/3) ... [2019-10-13 18:00:29,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ead436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:00:29, skipping insertion in model container [2019-10-13 18:00:29,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:00:29" (3/3) ... [2019-10-13 18:00:29,181 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label33.c [2019-10-13 18:00:29,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:00:29,200 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:00:29,212 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:00:29,244 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:00:29,244 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:00:29,244 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:00:29,245 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:00:29,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:00:29,245 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:00:29,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:00:29,245 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:00:29,273 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-13 18:00:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-13 18:00:29,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:29,281 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] [2019-10-13 18:00:29,283 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:29,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:29,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1507677901, now seen corresponding path program 1 times [2019-10-13 18:00:29,297 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:29,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628361696] [2019-10-13 18:00:29,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:29,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:29,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:29,707 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 18:00:29,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628361696] [2019-10-13 18:00:29,709 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:00:29,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:00:29,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417175615] [2019-10-13 18:00:29,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:00:29,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:29,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:00:29,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:00:29,739 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-13 18:00:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:33,049 INFO L93 Difference]: Finished difference Result 1009 states and 1797 transitions. [2019-10-13 18:00:33,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:00:33,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-10-13 18:00:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:33,072 INFO L225 Difference]: With dead ends: 1009 [2019-10-13 18:00:33,072 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 18:00:33,084 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 18:00:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 18:00:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2019-10-13 18:00:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 18:00:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 903 transitions. [2019-10-13 18:00:33,184 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 903 transitions. Word has length 34 [2019-10-13 18:00:33,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:33,184 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 903 transitions. [2019-10-13 18:00:33,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:00:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 903 transitions. [2019-10-13 18:00:33,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 18:00:33,189 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:33,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:33,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:33,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1644131182, now seen corresponding path program 1 times [2019-10-13 18:00:33,191 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:33,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582426328] [2019-10-13 18:00:33,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:33,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:33,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:00:33,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582426328] [2019-10-13 18:00:33,691 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:00:33,691 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:00:33,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869930960] [2019-10-13 18:00:33,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:00:33,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:33,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:00:33,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:00:33,695 INFO L87 Difference]: Start difference. First operand 626 states and 903 transitions. Second operand 9 states. [2019-10-13 18:00:36,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:36,596 INFO L93 Difference]: Finished difference Result 2436 states and 3670 transitions. [2019-10-13 18:00:36,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:00:36,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-13 18:00:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:36,611 INFO L225 Difference]: With dead ends: 2436 [2019-10-13 18:00:36,611 INFO L226 Difference]: Without dead ends: 1816 [2019-10-13 18:00:36,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:00:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2019-10-13 18:00:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1777. [2019-10-13 18:00:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1777 states. [2019-10-13 18:00:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2525 transitions. [2019-10-13 18:00:36,719 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2525 transitions. Word has length 106 [2019-10-13 18:00:36,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:36,719 INFO L462 AbstractCegarLoop]: Abstraction has 1777 states and 2525 transitions. [2019-10-13 18:00:36,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:00:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2525 transitions. [2019-10-13 18:00:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 18:00:36,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:36,732 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:00:36,732 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:36,735 INFO L82 PathProgramCache]: Analyzing trace with hash 361834226, now seen corresponding path program 1 times [2019-10-13 18:00:36,735 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:36,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128838242] [2019-10-13 18:00:36,736 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:36,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:36,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 96 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:00:37,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128838242] [2019-10-13 18:00:37,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870045714] [2019-10-13 18:00:37,179 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 18:00:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:37,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 18:00:37,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:00:37,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 18:00:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 18:00:37,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:00:37,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2019-10-13 18:00:37,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713757242] [2019-10-13 18:00:37,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:00:37,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:00:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:00:37,562 INFO L87 Difference]: Start difference. First operand 1777 states and 2525 transitions. Second operand 5 states. [2019-10-13 18:00:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:00:39,127 INFO L93 Difference]: Finished difference Result 4179 states and 5943 transitions. [2019-10-13 18:00:39,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 18:00:39,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2019-10-13 18:00:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:00:39,143 INFO L225 Difference]: With dead ends: 4179 [2019-10-13 18:00:39,144 INFO L226 Difference]: Without dead ends: 2408 [2019-10-13 18:00:39,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:00:39,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2019-10-13 18:00:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2200. [2019-10-13 18:00:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2019-10-13 18:00:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3047 transitions. [2019-10-13 18:00:39,240 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3047 transitions. Word has length 209 [2019-10-13 18:00:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:00:39,242 INFO L462 AbstractCegarLoop]: Abstraction has 2200 states and 3047 transitions. [2019-10-13 18:00:39,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:00:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3047 transitions. [2019-10-13 18:00:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2019-10-13 18:00:39,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:00:39,250 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:00:39,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:00:39,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:00:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:00:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash -662365848, now seen corresponding path program 1 times [2019-10-13 18:00:39,458 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:00:39,459 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549146215] [2019-10-13 18:00:39,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:39,460 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:00:39,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:00:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-10-13 18:00:39,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549146215] [2019-10-13 18:00:39,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331819457] [2019-10-13 18:00:39,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:00:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:00:39,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 18:00:40,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:00:40,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:40,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:40,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:40,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:40,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:40,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:40,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:40,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 18:00:42,214 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 59 DAG size of output: 21 [2019-10-13 18:00:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-10-13 18:00:44,442 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:00:44,442 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-10-13 18:00:44,442 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290855156] [2019-10-13 18:00:44,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 18:00:44,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:00:44,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 18:00:44,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2019-10-13 18:00:44,445 INFO L87 Difference]: Start difference. First operand 2200 states and 3047 transitions. Second operand 10 states.