/usr/bin/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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:07:32,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:07:32,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:07:32,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:07:32,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:07:32,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:07:32,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:07:32,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:07:32,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:07:32,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:07:32,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:07:32,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:07:32,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:07:32,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:07:32,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:07:32,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:07:32,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:07:32,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:07:32,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:07:32,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:07:32,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:07:32,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:07:32,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:07:32,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:07:32,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:07:32,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:07:32,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:07:32,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:07:32,895 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 [2019-11-06 19:07:32,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:07:32,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:07:32,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:07:32,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:07:32,911 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:07:32,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:07:32,911 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:07:32,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:07:32,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:07:32,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:07:32,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:07:32,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:07:32,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:07:32,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:07:32,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:07:32,913 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:07:32,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:07:32,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:07:32,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:07:32,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:07:32,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:07:32,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:07:32,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:07:32,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:07:32,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:07:32,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:07:32,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:07:32,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:07:32,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:07:33,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:07:33,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:07:33,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:07:33,212 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:07:33,213 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:07:33,213 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2019-11-06 19:07:33,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30cbcca0/2ef5c4ee5d134453bf9db3ab6926880a/FLAG83fd789f9 [2019-11-06 19:07:33,898 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:07:33,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label06.c [2019-11-06 19:07:33,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30cbcca0/2ef5c4ee5d134453bf9db3ab6926880a/FLAG83fd789f9 [2019-11-06 19:07:34,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30cbcca0/2ef5c4ee5d134453bf9db3ab6926880a [2019-11-06 19:07:34,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:07:34,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:07:34,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:07:34,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:07:34,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:07:34,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:34" (1/1) ... [2019-11-06 19:07:34,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ed38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:34, skipping insertion in model container [2019-11-06 19:07:34,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:34" (1/1) ... [2019-11-06 19:07:34,143 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:07:34,227 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:07:34,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:07:34,865 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:07:35,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:07:35,084 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:07:35,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35 WrapperNode [2019-11-06 19:07:35,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:07:35,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:07:35,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:07:35,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:07:35,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (1/1) ... [2019-11-06 19:07:35,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (1/1) ... [2019-11-06 19:07:35,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (1/1) ... [2019-11-06 19:07:35,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (1/1) ... [2019-11-06 19:07:35,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (1/1) ... [2019-11-06 19:07:35,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (1/1) ... [2019-11-06 19:07:35,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (1/1) ... [2019-11-06 19:07:35,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:07:35,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:07:35,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:07:35,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:07:35,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (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 [2019-11-06 19:07:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:07:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:07:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:07:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:07:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:07:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:07:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:07:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:07:35,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:07:35,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:07:35,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:07:37,116 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:07:37,117 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:07:37,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:37 BoogieIcfgContainer [2019-11-06 19:07:37,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:07:37,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:07:37,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:07:37,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:07:37,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:07:34" (1/3) ... [2019-11-06 19:07:37,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a579d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:37, skipping insertion in model container [2019-11-06 19:07:37,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:35" (2/3) ... [2019-11-06 19:07:37,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a579d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:37, skipping insertion in model container [2019-11-06 19:07:37,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:37" (3/3) ... [2019-11-06 19:07:37,135 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label06.c [2019-11-06 19:07:37,149 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:07:37,159 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:07:37,175 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:07:37,215 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:07:37,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:07:37,216 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:07:37,216 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:07:37,217 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:07:37,217 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:07:37,217 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:07:37,217 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:07:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-11-06 19:07:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-06 19:07:37,279 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:07:37,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:07:37,283 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:07:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:07:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1780384174, now seen corresponding path program 1 times [2019-11-06 19:07:37,300 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:07:37,301 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774514575] [2019-11-06 19:07:37,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:07:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:07:37,926 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774514575] [2019-11-06 19:07:37,927 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:07:37,928 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:07:37,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876039965] [2019-11-06 19:07:37,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:07:37,937 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:07:37,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:07:37,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:07:37,960 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-11-06 19:07:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:07:41,220 INFO L93 Difference]: Finished difference Result 999 states and 1795 transitions. [2019-11-06 19:07:41,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:07:41,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2019-11-06 19:07:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:07:41,245 INFO L225 Difference]: With dead ends: 999 [2019-11-06 19:07:41,245 INFO L226 Difference]: Without dead ends: 639 [2019-11-06 19:07:41,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:07:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-11-06 19:07:41,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 621. [2019-11-06 19:07:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-11-06 19:07:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 956 transitions. [2019-11-06 19:07:41,375 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 956 transitions. Word has length 69 [2019-11-06 19:07:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:07:41,376 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 956 transitions. [2019-11-06 19:07:41,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:07:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 956 transitions. [2019-11-06 19:07:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 19:07:41,384 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:07:41,387 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:07:41,387 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:07:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:07:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1517741782, now seen corresponding path program 1 times [2019-11-06 19:07:41,388 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:07:41,388 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094569146] [2019-11-06 19:07:41,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:07:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:07:41,777 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094569146] [2019-11-06 19:07:41,777 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934019007] [2019-11-06 19:07:41,778 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 [2019-11-06 19:07:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:41,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 19:07:41,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:07:41,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:07:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:07:42,058 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:07:42,059 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-11-06 19:07:42,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902484773] [2019-11-06 19:07:42,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:07:42,061 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:07:42,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:07:42,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 19:07:42,062 INFO L87 Difference]: Start difference. First operand 621 states and 956 transitions. Second operand 5 states. [2019-11-06 19:07:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:07:44,037 INFO L93 Difference]: Finished difference Result 1833 states and 2866 transitions. [2019-11-06 19:07:44,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 19:07:44,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-11-06 19:07:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:07:44,047 INFO L225 Difference]: With dead ends: 1833 [2019-11-06 19:07:44,047 INFO L226 Difference]: Without dead ends: 1218 [2019-11-06 19:07:44,050 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:07:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2019-11-06 19:07:44,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1009. [2019-11-06 19:07:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2019-11-06 19:07:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1374 transitions. [2019-11-06 19:07:44,109 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1374 transitions. Word has length 143 [2019-11-06 19:07:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:07:44,110 INFO L462 AbstractCegarLoop]: Abstraction has 1009 states and 1374 transitions. [2019-11-06 19:07:44,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:07:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1374 transitions. [2019-11-06 19:07:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-11-06 19:07:44,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:07:44,119 INFO L410 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, 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, 3, 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] [2019-11-06 19:07:44,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:07:44,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:07:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:07:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash 156853724, now seen corresponding path program 1 times [2019-11-06 19:07:44,330 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:07:44,332 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56143107] [2019-11-06 19:07:44,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:07:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:07:44,894 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56143107] [2019-11-06 19:07:44,895 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782222806] [2019-11-06 19:07:44,898 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 [2019-11-06 19:07:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:07:45,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 19:07:45,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:07:45,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:45,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:45,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:45,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:45,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:45,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:45,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:45,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 19:07:53,352 WARN L191 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2019-11-06 19:07:53,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 19:07:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-06 19:07:55,752 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 19:07:55,752 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-11-06 19:07:55,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301410317] [2019-11-06 19:07:55,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 19:07:55,754 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:07:55,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 19:07:55,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=76, Unknown=1, NotChecked=0, Total=110 [2019-11-06 19:07:55,755 INFO L87 Difference]: Start difference. First operand 1009 states and 1374 transitions. Second operand 11 states. [2019-11-06 19:08:04,710 WARN L191 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 54 DAG size of output: 21