/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/Problem03_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:01:00,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:01:00,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:01:00,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:01:00,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:01:00,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:01:00,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:01:00,437 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 19:01:00,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:01:00,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:01:00,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:01:00,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:01:00,463 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:01:00,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:01:00,464 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:01:00,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:01:00,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:01:00,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:01:00,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:01:00,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:01:00,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:01:00,466 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:01:00,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:01:00,466 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:01:00,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:01:00,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:01:00,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:01:00,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:01:00,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:01:00,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:01:00,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:01:00,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:01:00,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:01:00,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:01:00,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:01:00,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:01:00,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:01:00,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:01:00,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:01:00,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:01:00,778 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:01:00,778 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:01:00,779 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label32.c [2019-11-06 19:01:00,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79077331b/94badaba0d22463b9f37683e2ca72b40/FLAGde4b417f6 [2019-11-06 19:01:01,523 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:01:01,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label32.c [2019-11-06 19:01:01,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79077331b/94badaba0d22463b9f37683e2ca72b40/FLAGde4b417f6 [2019-11-06 19:01:01,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79077331b/94badaba0d22463b9f37683e2ca72b40 [2019-11-06 19:01:01,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:01:01,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:01:01,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:01:01,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:01:01,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:01:01,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:01" (1/1) ... [2019-11-06 19:01:01,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17134fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:01, skipping insertion in model container [2019-11-06 19:01:01,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:01" (1/1) ... [2019-11-06 19:01:01,793 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:01:01,881 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:01:02,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:01:02,696 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:01:02,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:01:03,021 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:01:03,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03 WrapperNode [2019-11-06 19:01:03,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:01:03,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:01:03,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:01:03,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:01:03,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ... [2019-11-06 19:01:03,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ... [2019-11-06 19:01:03,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ... [2019-11-06 19:01:03,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ... [2019-11-06 19:01:03,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ... [2019-11-06 19:01:03,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ... [2019-11-06 19:01:03,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ... [2019-11-06 19:01:03,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:01:03,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:01:03,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:01:03,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:01:03,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (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 19:01:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:01:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:01:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:01:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:01:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:01:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:01:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:01:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:01:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:01:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:01:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:01:05,181 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:01:05,186 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:01:05,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:05 BoogieIcfgContainer [2019-11-06 19:01:05,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:01:05,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:01:05,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:01:05,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:01:05,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:01:01" (1/3) ... [2019-11-06 19:01:05,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17541b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:05, skipping insertion in model container [2019-11-06 19:01:05,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (2/3) ... [2019-11-06 19:01:05,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17541b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:05, skipping insertion in model container [2019-11-06 19:01:05,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:05" (3/3) ... [2019-11-06 19:01:05,207 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label32.c [2019-11-06 19:01:05,223 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:01:05,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:01:05,248 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:01:05,294 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:01:05,294 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:01:05,294 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:01:05,294 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:01:05,295 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:01:05,295 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:01:05,295 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:01:05,295 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:01:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-11-06 19:01:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-06 19:01:05,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:05,368 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:05,370 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:05,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:05,377 INFO L82 PathProgramCache]: Analyzing trace with hash -846647824, now seen corresponding path program 1 times [2019-11-06 19:01:05,387 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:05,388 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063797133] [2019-11-06 19:01:05,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:06,353 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:06,527 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 19:01:06,528 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063797133] [2019-11-06 19:01:06,529 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:06,529 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:01:06,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815472058] [2019-11-06 19:01:06,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:01:06,539 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:06,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:01:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:01:06,557 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2019-11-06 19:01:06,776 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:07,273 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-11-06 19:01:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:11,068 INFO L93 Difference]: Finished difference Result 1104 states and 1964 transitions. [2019-11-06 19:01:11,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:01:11,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2019-11-06 19:01:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:11,106 INFO L225 Difference]: With dead ends: 1104 [2019-11-06 19:01:11,107 INFO L226 Difference]: Without dead ends: 696 [2019-11-06 19:01:11,121 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:01:11,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-11-06 19:01:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 472. [2019-11-06 19:01:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-11-06 19:01:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 722 transitions. [2019-11-06 19:01:11,236 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 722 transitions. Word has length 195 [2019-11-06 19:01:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:11,238 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 722 transitions. [2019-11-06 19:01:11,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:01:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 722 transitions. [2019-11-06 19:01:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-06 19:01:11,243 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:11,243 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:11,243 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:11,244 INFO L82 PathProgramCache]: Analyzing trace with hash 175357299, now seen corresponding path program 1 times [2019-11-06 19:01:11,244 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:11,245 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423450263] [2019-11-06 19:01:11,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:11,555 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:11,757 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423450263] [2019-11-06 19:01:11,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:11,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 19:01:11,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471358046] [2019-11-06 19:01:11,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 19:01:11,760 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:11,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 19:01:11,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:01:11,761 INFO L87 Difference]: Start difference. First operand 472 states and 722 transitions. Second operand 8 states. [2019-11-06 19:01:11,938 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:14,849 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-11-06 19:01:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:15,522 INFO L93 Difference]: Finished difference Result 1425 states and 2262 transitions. [2019-11-06 19:01:15,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 19:01:15,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2019-11-06 19:01:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:15,531 INFO L225 Difference]: With dead ends: 1425 [2019-11-06 19:01:15,531 INFO L226 Difference]: Without dead ends: 959 [2019-11-06 19:01:15,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-11-06 19:01:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-11-06 19:01:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 916. [2019-11-06 19:01:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2019-11-06 19:01:15,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1393 transitions. [2019-11-06 19:01:15,600 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1393 transitions. Word has length 204 [2019-11-06 19:01:15,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:15,601 INFO L462 AbstractCegarLoop]: Abstraction has 916 states and 1393 transitions. [2019-11-06 19:01:15,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 19:01:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1393 transitions. [2019-11-06 19:01:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-06 19:01:15,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:15,608 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:15,609 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:15,609 INFO L82 PathProgramCache]: Analyzing trace with hash 94250244, now seen corresponding path program 1 times [2019-11-06 19:01:15,609 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:15,610 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174848179] [2019-11-06 19:01:15,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:15,899 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:16,052 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174848179] [2019-11-06 19:01:16,052 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323218697] [2019-11-06 19:01:16,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:01:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:16,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:01:16,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:01:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:16,499 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:01:16,500 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-11-06 19:01:16,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090121955] [2019-11-06 19:01:16,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:01:16,510 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:16,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:01:16,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:01:16,511 INFO L87 Difference]: Start difference. First operand 916 states and 1393 transitions. Second operand 3 states. [2019-11-06 19:01:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:17,534 INFO L93 Difference]: Finished difference Result 2672 states and 4144 transitions. [2019-11-06 19:01:17,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:01:17,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-11-06 19:01:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:17,549 INFO L225 Difference]: With dead ends: 2672 [2019-11-06 19:01:17,549 INFO L226 Difference]: Without dead ends: 1762 [2019-11-06 19:01:17,553 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:01:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2019-11-06 19:01:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1759. [2019-11-06 19:01:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1759 states. [2019-11-06 19:01:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2413 transitions. [2019-11-06 19:01:17,627 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2413 transitions. Word has length 207 [2019-11-06 19:01:17,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:17,628 INFO L462 AbstractCegarLoop]: Abstraction has 1759 states and 2413 transitions. [2019-11-06 19:01:17,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:01:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2413 transitions. [2019-11-06 19:01:17,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-06 19:01:17,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:17,637 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:17,844 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:01:17,845 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash 872346032, now seen corresponding path program 1 times [2019-11-06 19:01:17,845 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:17,846 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125817526] [2019-11-06 19:01:17,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:18,146 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:18,372 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125817526] [2019-11-06 19:01:18,372 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:18,372 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:01:18,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320079838] [2019-11-06 19:01:18,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:01:18,376 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:18,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:01:18,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:01:18,377 INFO L87 Difference]: Start difference. First operand 1759 states and 2413 transitions. Second operand 9 states. [2019-11-06 19:01:18,520 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:21,889 INFO L93 Difference]: Finished difference Result 5360 states and 7937 transitions. [2019-11-06 19:01:21,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 19:01:21,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2019-11-06 19:01:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:21,917 INFO L225 Difference]: With dead ends: 5360 [2019-11-06 19:01:21,917 INFO L226 Difference]: Without dead ends: 3607 [2019-11-06 19:01:21,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-11-06 19:01:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2019-11-06 19:01:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3522. [2019-11-06 19:01:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3522 states. [2019-11-06 19:01:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 4975 transitions. [2019-11-06 19:01:22,083 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 4975 transitions. Word has length 213 [2019-11-06 19:01:22,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:22,083 INFO L462 AbstractCegarLoop]: Abstraction has 3522 states and 4975 transitions. [2019-11-06 19:01:22,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:01:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 4975 transitions. [2019-11-06 19:01:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-06 19:01:22,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:22,098 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:22,098 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:22,099 INFO L82 PathProgramCache]: Analyzing trace with hash 961862055, now seen corresponding path program 1 times [2019-11-06 19:01:22,099 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:22,099 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025615986] [2019-11-06 19:01:22,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:22,375 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:22,578 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025615986] [2019-11-06 19:01:22,578 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:22,579 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:01:22,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729487377] [2019-11-06 19:01:22,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:01:22,580 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:22,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:01:22,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:01:22,581 INFO L87 Difference]: Start difference. First operand 3522 states and 4975 transitions. Second operand 9 states. [2019-11-06 19:01:22,723 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:23,328 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:23,693 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-11-06 19:01:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:26,894 INFO L93 Difference]: Finished difference Result 14062 states and 21375 transitions. [2019-11-06 19:01:26,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:01:26,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2019-11-06 19:01:26,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:26,959 INFO L225 Difference]: With dead ends: 14062 [2019-11-06 19:01:26,960 INFO L226 Difference]: Without dead ends: 10546 [2019-11-06 19:01:26,976 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 19:01:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2019-11-06 19:01:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 10456. [2019-11-06 19:01:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10456 states. [2019-11-06 19:01:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10456 states to 10456 states and 14442 transitions. [2019-11-06 19:01:27,379 INFO L78 Accepts]: Start accepts. Automaton has 10456 states and 14442 transitions. Word has length 214 [2019-11-06 19:01:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:27,379 INFO L462 AbstractCegarLoop]: Abstraction has 10456 states and 14442 transitions. [2019-11-06 19:01:27,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:01:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 10456 states and 14442 transitions. [2019-11-06 19:01:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-11-06 19:01:27,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:27,422 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:27,422 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash 442727854, now seen corresponding path program 1 times [2019-11-06 19:01:27,422 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:27,423 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455552569] [2019-11-06 19:01:27,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:27,633 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 19:01:27,863 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455552569] [2019-11-06 19:01:27,863 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680854464] [2019-11-06 19:01:27,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:01:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:28,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:01:28,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:01:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 19:01:28,159 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:01:28,159 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-11-06 19:01:28,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636947774] [2019-11-06 19:01:28,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:01:28,161 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:01:28,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:01:28,161 INFO L87 Difference]: Start difference. First operand 10456 states and 14442 transitions. Second operand 3 states. [2019-11-06 19:01:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:01:29,492 INFO L93 Difference]: Finished difference Result 28950 states and 41082 transitions. [2019-11-06 19:01:29,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:01:29,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2019-11-06 19:01:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:01:29,585 INFO L225 Difference]: With dead ends: 28950 [2019-11-06 19:01:29,586 INFO L226 Difference]: Without dead ends: 18500 [2019-11-06 19:01:29,618 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:01:29,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18500 states. [2019-11-06 19:01:30,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18500 to 18468. [2019-11-06 19:01:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18468 states. [2019-11-06 19:01:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18468 states to 18468 states and 26050 transitions. [2019-11-06 19:01:30,089 INFO L78 Accepts]: Start accepts. Automaton has 18468 states and 26050 transitions. Word has length 231 [2019-11-06 19:01:30,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:01:30,090 INFO L462 AbstractCegarLoop]: Abstraction has 18468 states and 26050 transitions. [2019-11-06 19:01:30,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:01:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18468 states and 26050 transitions. [2019-11-06 19:01:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2019-11-06 19:01:30,150 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:01:30,150 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 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 19:01:30,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:01:30,354 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:01:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:01:30,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1759693390, now seen corresponding path program 1 times [2019-11-06 19:01:30,356 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:01:30,356 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697071321] [2019-11-06 19:01:30,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:01:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:30,657 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2019-11-06 19:01:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:01:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:01:31,028 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697071321] [2019-11-06 19:01:31,028 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:01:31,029 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 19:01:31,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574731709] [2019-11-06 19:01:31,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 19:01:31,030 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:01:31,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 19:01:31,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-06 19:01:31,031 INFO L87 Difference]: Start difference. First operand 18468 states and 26050 transitions. Second operand 10 states. [2019-11-06 19:01:31,247 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:31,843 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 130 [2019-11-06 19:01:32,090 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2019-11-06 19:01:34,035 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 132