/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/Problem18_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:21:00,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:21:00,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:21:00,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:21:00,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:21:00,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:21:00,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:21:00,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:21:00,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:21:00,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:21:00,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:21:00,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:21:00,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:21:00,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:21:00,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:21:00,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:21:00,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:21:00,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:21:00,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:21:00,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:21:00,243 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 19:21:00,263 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:21:00,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:21:00,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:21:00,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:21:00,264 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:21:00,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:21:00,265 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:21:00,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:21:00,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:21:00,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:21:00,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:21:00,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:21:00,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:21:00,266 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:21:00,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:21:00,267 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:21:00,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:21:00,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:21:00,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:21:00,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:21:00,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:21:00,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:21:00,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:21:00,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:21:00,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:21:00,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:21:00,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:21:00,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:21:00,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:21:00,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:21:00,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:21:00,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:21:00,603 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:21:00,604 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:21:00,604 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2019-11-06 19:21:00,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98c99d8e/025cc834bd6a450ea2c98adf083f5523/FLAGc530e1058 [2019-11-06 19:21:01,392 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:21:01,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label37.c [2019-11-06 19:21:01,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98c99d8e/025cc834bd6a450ea2c98adf083f5523/FLAGc530e1058 [2019-11-06 19:21:01,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a98c99d8e/025cc834bd6a450ea2c98adf083f5523 [2019-11-06 19:21:01,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:21:01,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:21:01,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:01,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:21:01,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:21:01,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:01" (1/1) ... [2019-11-06 19:21:01,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44932c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:01, skipping insertion in model container [2019-11-06 19:21:01,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:21:01" (1/1) ... [2019-11-06 19:21:01,545 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:21:01,668 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:21:02,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:02,864 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:21:03,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:21:03,339 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:21:03,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03 WrapperNode [2019-11-06 19:21:03,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:21:03,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:21:03,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:21:03,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:21:03,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (1/1) ... [2019-11-06 19:21:03,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (1/1) ... [2019-11-06 19:21:03,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (1/1) ... [2019-11-06 19:21:03,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (1/1) ... [2019-11-06 19:21:03,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (1/1) ... [2019-11-06 19:21:03,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (1/1) ... [2019-11-06 19:21:03,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (1/1) ... [2019-11-06 19:21:03,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:21:03,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:21:03,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:21:03,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:21:03,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (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 19:21:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:21:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:21:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:21:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:21:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:21:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:21:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:21:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:21:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:21:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:21:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:21:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:21:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:21:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:21:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:21:07,745 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:21:07,745 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:21:07,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:07 BoogieIcfgContainer [2019-11-06 19:21:07,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:21:07,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:21:07,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:21:07,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:21:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:21:01" (1/3) ... [2019-11-06 19:21:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6b72f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:07, skipping insertion in model container [2019-11-06 19:21:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:21:03" (2/3) ... [2019-11-06 19:21:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6b72f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:21:07, skipping insertion in model container [2019-11-06 19:21:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:21:07" (3/3) ... [2019-11-06 19:21:07,761 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label37.c [2019-11-06 19:21:07,772 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:21:07,781 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:21:07,794 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:21:07,840 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:21:07,840 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:21:07,841 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:21:07,841 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:21:07,841 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:21:07,841 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:21:07,841 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:21:07,841 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:21:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 19:21:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-06 19:21:07,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:07,898 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] [2019-11-06 19:21:07,900 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:07,907 INFO L82 PathProgramCache]: Analyzing trace with hash -545503303, now seen corresponding path program 1 times [2019-11-06 19:21:07,916 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:07,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094926390] [2019-11-06 19:21:07,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:08,433 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 19:21:08,433 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094926390] [2019-11-06 19:21:08,434 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:08,435 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:21:08,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24361263] [2019-11-06 19:21:08,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:21:08,446 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:08,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:21:08,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:21:08,468 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-11-06 19:21:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:18,187 INFO L93 Difference]: Finished difference Result 2984 states and 5769 transitions. [2019-11-06 19:21:18,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:21:18,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-11-06 19:21:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:18,221 INFO L225 Difference]: With dead ends: 2984 [2019-11-06 19:21:18,222 INFO L226 Difference]: Without dead ends: 2142 [2019-11-06 19:21:18,232 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 19:21:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-11-06 19:21:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2135. [2019-11-06 19:21:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2019-11-06 19:21:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3571 transitions. [2019-11-06 19:21:18,407 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3571 transitions. Word has length 62 [2019-11-06 19:21:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:18,409 INFO L462 AbstractCegarLoop]: Abstraction has 2135 states and 3571 transitions. [2019-11-06 19:21:18,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:21:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3571 transitions. [2019-11-06 19:21:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-06 19:21:18,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:18,428 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, 1, 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 19:21:18,428 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1269044687, now seen corresponding path program 1 times [2019-11-06 19:21:18,429 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:18,429 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51224793] [2019-11-06 19:21:18,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:18,780 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51224793] [2019-11-06 19:21:18,780 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:18,780 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:21:18,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883125901] [2019-11-06 19:21:18,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:21:18,785 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:18,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:21:18,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:21:18,786 INFO L87 Difference]: Start difference. First operand 2135 states and 3571 transitions. Second operand 8 states. [2019-11-06 19:21:26,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:26,490 INFO L93 Difference]: Finished difference Result 5045 states and 8285 transitions. [2019-11-06 19:21:26,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 19:21:26,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2019-11-06 19:21:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:26,506 INFO L225 Difference]: With dead ends: 5045 [2019-11-06 19:21:26,506 INFO L226 Difference]: Without dead ends: 2916 [2019-11-06 19:21:26,512 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:21:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2019-11-06 19:21:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2879. [2019-11-06 19:21:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2019-11-06 19:21:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4328 transitions. [2019-11-06 19:21:26,582 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4328 transitions. Word has length 133 [2019-11-06 19:21:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:26,585 INFO L462 AbstractCegarLoop]: Abstraction has 2879 states and 4328 transitions. [2019-11-06 19:21:26,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:21:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4328 transitions. [2019-11-06 19:21:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-06 19:21:26,598 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:26,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:26,599 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:26,599 INFO L82 PathProgramCache]: Analyzing trace with hash -639360172, now seen corresponding path program 1 times [2019-11-06 19:21:26,600 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:26,601 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238051110] [2019-11-06 19:21:26,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:27,024 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238051110] [2019-11-06 19:21:27,024 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:21:27,024 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:21:27,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917079293] [2019-11-06 19:21:27,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:21:27,026 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:27,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:21:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:21:27,026 INFO L87 Difference]: Start difference. First operand 2879 states and 4328 transitions. Second operand 9 states. [2019-11-06 19:21:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:39,443 INFO L93 Difference]: Finished difference Result 10953 states and 16883 transitions. [2019-11-06 19:21:39,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:21:39,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-11-06 19:21:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:39,484 INFO L225 Difference]: With dead ends: 10953 [2019-11-06 19:21:39,484 INFO L226 Difference]: Without dead ends: 8080 [2019-11-06 19:21:39,493 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:21:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8080 states. [2019-11-06 19:21:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8080 to 7316. [2019-11-06 19:21:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7316 states.