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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:58:33,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:58:33,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:58:33,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-14 21:58:33,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:58:33,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:58:33,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:58:33,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:58:33,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:58:33,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:58:33,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:58:33,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:58:33,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:58:33,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:58:33,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:58:33,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:58:33,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 21:58:33,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:58:33,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:58:33,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:58:33,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:58:33,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:58:33,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:58:33,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:58:33,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:58:33,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:58:33,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:58:33,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:58:33,551 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 [2019-10-14 21:58:33,585 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:58:33,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:58:33,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:58:33,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:58:33,591 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:58:33,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:58:33,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:58:33,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:58:33,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:58:33,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:58:33,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:58:33,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:58:33,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:58:33,595 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:58:33,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:58:33,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:58:33,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:58:33,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:58:33,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:58:33,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:58:33,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:58:33,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:58:33,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:58:33,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:58:33,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:58:33,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:58:33,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:58:33,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:58:33,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:58:33,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:58:33,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:58:33,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:58:33,902 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:58:33,902 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:58:33,903 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2019-10-14 21:58:33,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beb2c0582/d259bc020307472dbcda17beeba7c773/FLAGe0941e66d [2019-10-14 21:58:34,623 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:58:34,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label13.c [2019-10-14 21:58:34,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beb2c0582/d259bc020307472dbcda17beeba7c773/FLAGe0941e66d [2019-10-14 21:58:34,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beb2c0582/d259bc020307472dbcda17beeba7c773 [2019-10-14 21:58:34,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:58:34,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:58:34,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:58:34,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:58:34,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:58:34,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:34" (1/1) ... [2019-10-14 21:58:34,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71518f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:34, skipping insertion in model container [2019-10-14 21:58:34,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:58:34" (1/1) ... [2019-10-14 21:58:34,815 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:58:34,887 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:58:35,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:58:35,646 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:58:36,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:58:36,041 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:58:36,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36 WrapperNode [2019-10-14 21:58:36,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:58:36,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:58:36,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:58:36,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:58:36,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (1/1) ... [2019-10-14 21:58:36,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (1/1) ... [2019-10-14 21:58:36,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (1/1) ... [2019-10-14 21:58:36,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (1/1) ... [2019-10-14 21:58:36,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (1/1) ... [2019-10-14 21:58:36,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (1/1) ... [2019-10-14 21:58:36,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (1/1) ... [2019-10-14 21:58:36,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:58:36,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:58:36,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:58:36,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:58:36,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (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 [2019-10-14 21:58:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:58:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:58:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 21:58:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:58:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 21:58:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:58:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 21:58:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 21:58:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:58:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:58:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:58:38,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:58:38,498 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 21:58:38,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:38 BoogieIcfgContainer [2019-10-14 21:58:38,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:58:38,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:58:38,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:58:38,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:58:38,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:58:34" (1/3) ... [2019-10-14 21:58:38,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394af214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:38, skipping insertion in model container [2019-10-14 21:58:38,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:58:36" (2/3) ... [2019-10-14 21:58:38,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394af214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:58:38, skipping insertion in model container [2019-10-14 21:58:38,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:58:38" (3/3) ... [2019-10-14 21:58:38,523 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label13.c [2019-10-14 21:58:38,542 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:58:38,553 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:58:38,565 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:58:38,609 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:58:38,609 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:58:38,610 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:58:38,610 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:58:38,610 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:58:38,610 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:58:38,610 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:58:38,611 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:58:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-14 21:58:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 21:58:38,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:38,661 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:38,663 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:38,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1992146438, now seen corresponding path program 1 times [2019-10-14 21:58:38,680 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:38,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224270059] [2019-10-14 21:58:38,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:38,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:38,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:39,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224270059] [2019-10-14 21:58:39,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:58:39,173 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:58:39,173 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217629470] [2019-10-14 21:58:39,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:58:39,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:39,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:58:39,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:58:39,205 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-14 21:58:42,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:42,793 INFO L93 Difference]: Finished difference Result 1009 states and 1797 transitions. [2019-10-14 21:58:42,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:58:42,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-10-14 21:58:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:42,816 INFO L225 Difference]: With dead ends: 1009 [2019-10-14 21:58:42,816 INFO L226 Difference]: Without dead ends: 633 [2019-10-14 21:58:42,825 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 [2019-10-14 21:58:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-14 21:58:42,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2019-10-14 21:58:42,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-14 21:58:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 903 transitions. [2019-10-14 21:58:42,923 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 903 transitions. Word has length 39 [2019-10-14 21:58:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:42,924 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 903 transitions. [2019-10-14 21:58:42,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:58:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 903 transitions. [2019-10-14 21:58:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-14 21:58:42,930 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:42,930 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 21:58:42,930 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:42,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1526241146, now seen corresponding path program 1 times [2019-10-14 21:58:42,931 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:42,931 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080084894] [2019-10-14 21:58:42,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:42,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:42,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:58:43,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080084894] [2019-10-14 21:58:43,222 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:58:43,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 21:58:43,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525465360] [2019-10-14 21:58:43,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 21:58:43,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:43,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 21:58:43,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:58:43,226 INFO L87 Difference]: Start difference. First operand 626 states and 903 transitions. Second operand 9 states. [2019-10-14 21:58:46,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:46,445 INFO L93 Difference]: Finished difference Result 2436 states and 3670 transitions. [2019-10-14 21:58:46,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 21:58:46,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-10-14 21:58:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:46,461 INFO L225 Difference]: With dead ends: 2436 [2019-10-14 21:58:46,462 INFO L226 Difference]: Without dead ends: 1816 [2019-10-14 21:58:46,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-14 21:58:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2019-10-14 21:58:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1777. [2019-10-14 21:58:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1777 states. [2019-10-14 21:58:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2525 transitions. [2019-10-14 21:58:46,552 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2525 transitions. Word has length 111 [2019-10-14 21:58:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:46,553 INFO L462 AbstractCegarLoop]: Abstraction has 1777 states and 2525 transitions. [2019-10-14 21:58:46,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 21:58:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2525 transitions. [2019-10-14 21:58:46,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-14 21:58:46,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:46,564 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:46,564 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:46,565 INFO L82 PathProgramCache]: Analyzing trace with hash 993014813, now seen corresponding path program 1 times [2019-10-14 21:58:46,565 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:46,565 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740206022] [2019-10-14 21:58:46,565 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:46,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:46,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 101 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:58:47,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740206022] [2019-10-14 21:58:47,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106325905] [2019-10-14 21:58:47,135 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 [2019-10-14 21:58:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:47,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 21:58:47,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:47,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:58:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-14 21:58:47,468 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:58:47,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2019-10-14 21:58:47,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168199524] [2019-10-14 21:58:47,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:58:47,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:47,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:58:47,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-10-14 21:58:47,480 INFO L87 Difference]: Start difference. First operand 1777 states and 2525 transitions. Second operand 5 states. [2019-10-14 21:58:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:58:49,732 INFO L93 Difference]: Finished difference Result 4179 states and 5943 transitions. [2019-10-14 21:58:49,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 21:58:49,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2019-10-14 21:58:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:58:49,753 INFO L225 Difference]: With dead ends: 4179 [2019-10-14 21:58:49,753 INFO L226 Difference]: Without dead ends: 2408 [2019-10-14 21:58:49,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2019-10-14 21:58:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2019-10-14 21:58:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2200. [2019-10-14 21:58:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2019-10-14 21:58:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3047 transitions. [2019-10-14 21:58:49,855 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3047 transitions. Word has length 214 [2019-10-14 21:58:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:58:49,857 INFO L462 AbstractCegarLoop]: Abstraction has 2200 states and 3047 transitions. [2019-10-14 21:58:49,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:58:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3047 transitions. [2019-10-14 21:58:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-10-14 21:58:49,864 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:58:49,865 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:58:50,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:58:50,070 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:58:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:58:50,071 INFO L82 PathProgramCache]: Analyzing trace with hash -957711129, now seen corresponding path program 1 times [2019-10-14 21:58:50,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:58:50,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720295201] [2019-10-14 21:58:50,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:50,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:58:50,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:58:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-10-14 21:58:50,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720295201] [2019-10-14 21:58:50,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647041678] [2019-10-14 21:58:50,533 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 [2019-10-14 21:58:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:58:50,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-14 21:58:50,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:58:50,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:50,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:50,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:50,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:50,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:50,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:50,747 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:50,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:58:52,919 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 59 DAG size of output: 21 [2019-10-14 21:58:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-10-14 21:58:55,239 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:58:55,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-10-14 21:58:55,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598056333] [2019-10-14 21:58:55,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 21:58:55,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:58:55,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 21:58:55,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2019-10-14 21:58:55,244 INFO L87 Difference]: Start difference. First operand 2200 states and 3047 transitions. Second operand 11 states.