/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/psyco/psyco_net_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:09:27,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:09:27,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:09:27,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:09:27,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:09:27,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:09:27,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:09:27,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:09:27,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:09:27,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:09:27,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:09:27,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:09:27,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:09:27,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:09:27,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:09:27,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:09:27,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:09:27,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:09:27,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:09:27,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:09:27,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:09:27,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:09:27,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:09:27,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:09:27,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:09:27,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:09:27,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:09:27,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:09:27,240 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 22:09:27,258 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:09:27,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:09:27,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:09:27,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:09:27,260 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:09:27,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:09:27,261 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:09:27,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:09:27,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:09:27,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:09:27,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:09:27,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:09:27,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:09:27,263 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:09:27,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:09:27,263 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:09:27,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:09:27,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:09:27,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:09:27,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:09:27,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:09:27,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:09:27,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:09:27,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:09:27,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:09:27,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:09:27,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:09:27,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:09:27,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:09:27,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:09:27,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:09:27,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:09:27,568 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:09:27,568 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:09:27,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_net_1.c [2019-11-06 22:09:27,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b7014ea/ce934fee2ccf4f8d8491be550edca451/FLAG2472cfb94 [2019-11-06 22:09:29,049 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:09:29,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_net_1.c [2019-11-06 22:09:29,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b7014ea/ce934fee2ccf4f8d8491be550edca451/FLAG2472cfb94 [2019-11-06 22:09:29,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b7014ea/ce934fee2ccf4f8d8491be550edca451 [2019-11-06 22:09:29,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:09:29,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:09:29,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:09:29,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:09:29,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:09:29,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:29" (1/1) ... [2019-11-06 22:09:29,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183b6ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:29, skipping insertion in model container [2019-11-06 22:09:29,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:29" (1/1) ... [2019-11-06 22:09:29,485 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:09:30,132 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:09:31,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:09:31,762 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:09:32,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:09:32,772 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:09:32,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32 WrapperNode [2019-11-06 22:09:32,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:09:32,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:09:32,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:09:32,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:09:32,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (1/1) ... [2019-11-06 22:09:32,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (1/1) ... [2019-11-06 22:09:33,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (1/1) ... [2019-11-06 22:09:33,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (1/1) ... [2019-11-06 22:09:33,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (1/1) ... [2019-11-06 22:09:33,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (1/1) ... [2019-11-06 22:09:33,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (1/1) ... [2019-11-06 22:09:35,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:09:35,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:09:35,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:09:35,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:09:35,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (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 22:09:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:09:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:09:35,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:09:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:09:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:09:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:09:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:09:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:09:54,545 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:09:54,546 INFO L284 CfgBuilder]: Removed 1130 assume(true) statements. [2019-11-06 22:09:54,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:54 BoogieIcfgContainer [2019-11-06 22:09:54,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:09:54,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:09:54,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:09:54,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:09:54,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:09:29" (1/3) ... [2019-11-06 22:09:54,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acb31ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:54, skipping insertion in model container [2019-11-06 22:09:54,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:32" (2/3) ... [2019-11-06 22:09:54,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acb31ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:54, skipping insertion in model container [2019-11-06 22:09:54,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:54" (3/3) ... [2019-11-06 22:09:54,560 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2019-11-06 22:09:54,568 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:09:54,578 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:09:54,590 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:09:54,654 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:09:54,654 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:09:54,654 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:09:54,654 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:09:54,655 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:09:54,655 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:09:54,655 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:09:54,655 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:09:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 9216 states. [2019-11-06 22:09:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 22:09:54,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:54,966 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:54,968 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:54,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2089661630, now seen corresponding path program 1 times [2019-11-06 22:09:54,985 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:54,986 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098848876] [2019-11-06 22:09:54,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:55,489 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:09:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:55,534 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 22:09:55,535 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098848876] [2019-11-06 22:09:55,536 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:55,536 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:09:55,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151099098] [2019-11-06 22:09:55,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:09:55,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:55,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:09:55,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:09:55,560 INFO L87 Difference]: Start difference. First operand 9216 states. Second operand 3 states. [2019-11-06 22:09:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:56,081 INFO L93 Difference]: Finished difference Result 17704 states and 35386 transitions. [2019-11-06 22:09:56,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:09:56,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-06 22:09:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:56,148 INFO L225 Difference]: With dead ends: 17704 [2019-11-06 22:09:56,148 INFO L226 Difference]: Without dead ends: 8284 [2019-11-06 22:09:56,173 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:09:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2019-11-06 22:09:56,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2019-11-06 22:09:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8284 states. [2019-11-06 22:09:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 13001 transitions. [2019-11-06 22:09:56,464 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 13001 transitions. Word has length 13 [2019-11-06 22:09:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:56,464 INFO L462 AbstractCegarLoop]: Abstraction has 8284 states and 13001 transitions. [2019-11-06 22:09:56,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:09:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 13001 transitions. [2019-11-06 22:09:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 22:09:56,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:56,467 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:56,467 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash 886062589, now seen corresponding path program 1 times [2019-11-06 22:09:56,468 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:56,468 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742137588] [2019-11-06 22:09:56,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:56,857 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 22:09:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:56,869 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 22:09:56,869 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742137588] [2019-11-06 22:09:56,870 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:56,870 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:09:56,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349603315] [2019-11-06 22:09:56,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:09:56,872 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:09:56,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:09:56,873 INFO L87 Difference]: Start difference. First operand 8284 states and 13001 transitions. Second operand 4 states. [2019-11-06 22:09:57,109 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 172