/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:33:58,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:33:58,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:33:59,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 22:33:59,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:33:59,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:33:59,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:33:59,129 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 [2020-11-06 22:33:59,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:33:59,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:33:59,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:33:59,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:33:59,191 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:33:59,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:33:59,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:33:59,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:33:59,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:33:59,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:33:59,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:33:59,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:33:59,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:33:59,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:33:59,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:33:59,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:33:59,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:33:59,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:33:59,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:33:59,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:33:59,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:33:59,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:33:59,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:33:59,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:33:59,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:33:59,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:33:59,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:33:59,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:33:59,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:33:59,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:33:59,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:33:59,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:33:59,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:33:59,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:33:59,681 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:33:59,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-11-06 22:33:59,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea4e57c7/426de34e15ec49c48b5ce68b4b000b77/FLAGa9b0d254f [2020-11-06 22:34:00,613 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:34:00,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-11-06 22:34:00,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea4e57c7/426de34e15ec49c48b5ce68b4b000b77/FLAGa9b0d254f [2020-11-06 22:34:00,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ea4e57c7/426de34e15ec49c48b5ce68b4b000b77 [2020-11-06 22:34:00,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:34:00,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:34:00,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:34:00,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:34:00,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:34:00,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:00" (1/1) ... [2020-11-06 22:34:00,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec79b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:00, skipping insertion in model container [2020-11-06 22:34:00,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:00" (1/1) ... [2020-11-06 22:34:00,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:34:00,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:34:01,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:34:01,383 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:34:01,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:34:01,695 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:34:01,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01 WrapperNode [2020-11-06 22:34:01,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:34:01,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:34:01,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:34:01,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:34:01,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (1/1) ... [2020-11-06 22:34:01,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (1/1) ... [2020-11-06 22:34:01,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (1/1) ... [2020-11-06 22:34:01,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (1/1) ... [2020-11-06 22:34:01,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (1/1) ... [2020-11-06 22:34:01,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (1/1) ... [2020-11-06 22:34:01,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (1/1) ... [2020-11-06 22:34:01,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:34:01,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:34:01,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:34:01,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:34:01,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (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 [2020-11-06 22:34:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:34:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:34:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:34:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-06 22:34:01,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:34:01,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-06 22:34:01,920 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:34:01,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:34:01,920 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:34:01,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:34:01,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:34:01,921 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-06 22:34:01,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:34:01,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:34:01,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:34:01,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:34:01,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:34:01,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:34:01,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:34:03,327 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:34:03,328 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:34:03,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:03 BoogieIcfgContainer [2020-11-06 22:34:03,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:34:03,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:34:03,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:34:03,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:34:03,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:34:00" (1/3) ... [2020-11-06 22:34:03,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587a78d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:03, skipping insertion in model container [2020-11-06 22:34:03,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:01" (2/3) ... [2020-11-06 22:34:03,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587a78d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:03, skipping insertion in model container [2020-11-06 22:34:03,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:03" (3/3) ... [2020-11-06 22:34:03,341 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-11-06 22:34:03,360 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:34:03,366 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:34:03,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:34:03,415 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:34:03,416 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:34:03,416 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:34:03,416 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:34:03,416 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:34:03,416 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:34:03,416 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:34:03,416 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:34:03,444 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-11-06 22:34:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-06 22:34:03,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:03,463 INFO L422 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] [2020-11-06 22:34:03,464 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:03,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:03,471 INFO L82 PathProgramCache]: Analyzing trace with hash -600745277, now seen corresponding path program 1 times [2020-11-06 22:34:03,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:03,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930276263] [2020-11-06 22:34:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:34:04,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930276263] [2020-11-06 22:34:04,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:34:04,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:34:04,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660762463] [2020-11-06 22:34:04,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:34:04,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:34:04,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:34:04,328 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 4 states. [2020-11-06 22:34:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:06,229 INFO L93 Difference]: Finished difference Result 562 states and 962 transitions. [2020-11-06 22:34:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:34:06,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-11-06 22:34:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:06,255 INFO L225 Difference]: With dead ends: 562 [2020-11-06 22:34:06,256 INFO L226 Difference]: Without dead ends: 287 [2020-11-06 22:34:06,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:34:06,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-06 22:34:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 281. [2020-11-06 22:34:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-06 22:34:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 397 transitions. [2020-11-06 22:34:06,371 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 397 transitions. Word has length 139 [2020-11-06 22:34:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:06,373 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 397 transitions. [2020-11-06 22:34:06,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:34:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 397 transitions. [2020-11-06 22:34:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 22:34:06,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:06,379 INFO L422 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] [2020-11-06 22:34:06,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:34:06,379 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash -904505918, now seen corresponding path program 1 times [2020-11-06 22:34:06,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:06,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774747868] [2020-11-06 22:34:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:06,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:34:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:34:06,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774747868] [2020-11-06 22:34:06,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:34:06,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:34:06,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494066483] [2020-11-06 22:34:06,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:34:06,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:06,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:34:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:34:06,731 INFO L87 Difference]: Start difference. First operand 281 states and 397 transitions. Second operand 7 states. [2020-11-06 22:34:06,886 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-06 22:34:08,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:08,780 INFO L93 Difference]: Finished difference Result 863 states and 1251 transitions. [2020-11-06 22:34:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:34:08,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-11-06 22:34:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:08,800 INFO L225 Difference]: With dead ends: 863 [2020-11-06 22:34:08,803 INFO L226 Difference]: Without dead ends: 588 [2020-11-06 22:34:08,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:34:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-11-06 22:34:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 561. [2020-11-06 22:34:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-11-06 22:34:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 766 transitions. [2020-11-06 22:34:08,895 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 766 transitions. Word has length 148 [2020-11-06 22:34:08,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:08,895 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 766 transitions. [2020-11-06 22:34:08,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:34:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 766 transitions. [2020-11-06 22:34:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-11-06 22:34:08,903 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:08,904 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:34:08,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:34:08,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:08,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1155225482, now seen corresponding path program 1 times [2020-11-06 22:34:08,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:08,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637621224] [2020-11-06 22:34:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:34:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:34:09,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637621224] [2020-11-06 22:34:09,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:34:09,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:34:09,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208910478] [2020-11-06 22:34:09,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:34:09,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:09,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:34:09,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:34:09,234 INFO L87 Difference]: Start difference. First operand 561 states and 766 transitions. Second operand 7 states. [2020-11-06 22:34:09,367 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-06 22:34:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:11,378 INFO L93 Difference]: Finished difference Result 1732 states and 2469 transitions. [2020-11-06 22:34:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:34:11,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-11-06 22:34:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:11,393 INFO L225 Difference]: With dead ends: 1732 [2020-11-06 22:34:11,393 INFO L226 Difference]: Without dead ends: 1177 [2020-11-06 22:34:11,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:34:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-11-06 22:34:11,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1151. [2020-11-06 22:34:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-11-06 22:34:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1529 transitions. [2020-11-06 22:34:11,497 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1529 transitions. Word has length 152 [2020-11-06 22:34:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:11,500 INFO L481 AbstractCegarLoop]: Abstraction has 1151 states and 1529 transitions. [2020-11-06 22:34:11,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:34:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1529 transitions. [2020-11-06 22:34:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-11-06 22:34:11,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:11,509 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:34:11,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:34:11,510 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:11,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:11,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2076329646, now seen corresponding path program 1 times [2020-11-06 22:34:11,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:11,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525062698] [2020-11-06 22:34:11,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:11,835 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-06 22:34:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:11,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:34:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:34:12,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525062698] [2020-11-06 22:34:12,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:34:12,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:34:12,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413447131] [2020-11-06 22:34:12,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:34:12,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:12,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:34:12,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:34:12,036 INFO L87 Difference]: Start difference. First operand 1151 states and 1529 transitions. Second operand 8 states. [2020-11-06 22:34:12,251 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-06 22:34:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:14,872 INFO L93 Difference]: Finished difference Result 2743 states and 3670 transitions. [2020-11-06 22:34:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:34:14,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2020-11-06 22:34:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:14,885 INFO L225 Difference]: With dead ends: 2743 [2020-11-06 22:34:14,885 INFO L226 Difference]: Without dead ends: 1598 [2020-11-06 22:34:14,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:34:14,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-11-06 22:34:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1447. [2020-11-06 22:34:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1447 states. [2020-11-06 22:34:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 1893 transitions. [2020-11-06 22:34:14,969 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 1893 transitions. Word has length 156 [2020-11-06 22:34:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:14,970 INFO L481 AbstractCegarLoop]: Abstraction has 1447 states and 1893 transitions. [2020-11-06 22:34:14,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:34:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 1893 transitions. [2020-11-06 22:34:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-11-06 22:34:14,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:14,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-11-06 22:34:14,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:34:14,979 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash -733629121, now seen corresponding path program 1 times [2020-11-06 22:34:14,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:14,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240892384] [2020-11-06 22:34:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:15,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:15,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:34:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:15,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:34:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:34:15,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240892384] [2020-11-06 22:34:15,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777492196] [2020-11-06 22:34:15,292 INFO L95 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 [2020-11-06 22:34:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:15,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:34:15,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:34:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:34:15,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:34:15,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-11-06 22:34:15,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924139698] [2020-11-06 22:34:15,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:34:15,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:34:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:34:15,840 INFO L87 Difference]: Start difference. First operand 1447 states and 1893 transitions. Second operand 3 states. [2020-11-06 22:34:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:16,587 INFO L93 Difference]: Finished difference Result 3569 states and 4746 transitions. [2020-11-06 22:34:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:34:16,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-11-06 22:34:16,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:16,601 INFO L225 Difference]: With dead ends: 3569 [2020-11-06 22:34:16,601 INFO L226 Difference]: Without dead ends: 2128 [2020-11-06 22:34:16,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:34:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2020-11-06 22:34:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1993. [2020-11-06 22:34:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1993 states. [2020-11-06 22:34:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2651 transitions. [2020-11-06 22:34:16,678 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2651 transitions. Word has length 159 [2020-11-06 22:34:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:16,679 INFO L481 AbstractCegarLoop]: Abstraction has 1993 states and 2651 transitions. [2020-11-06 22:34:16,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:34:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2651 transitions. [2020-11-06 22:34:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-06 22:34:16,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:16,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-11-06 22:34:16,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:34:16,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:16,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1173861425, now seen corresponding path program 1 times [2020-11-06 22:34:16,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:16,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619219670] [2020-11-06 22:34:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:17,098 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-06 22:34:17,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:17,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:34:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:34:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:34:17,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619219670] [2020-11-06 22:34:17,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996991482] [2020-11-06 22:34:17,362 INFO L95 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 [2020-11-06 22:34:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:17,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:34:17,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:34:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-06 22:34:17,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:34:17,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2020-11-06 22:34:17,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983086253] [2020-11-06 22:34:17,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:34:17,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:17,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:34:17,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:34:17,696 INFO L87 Difference]: Start difference. First operand 1993 states and 2651 transitions. Second operand 3 states. [2020-11-06 22:34:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:18,402 INFO L93 Difference]: Finished difference Result 4528 states and 6122 transitions. [2020-11-06 22:34:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:34:18,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-11-06 22:34:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:18,426 INFO L225 Difference]: With dead ends: 4528 [2020-11-06 22:34:18,426 INFO L226 Difference]: Without dead ends: 2541 [2020-11-06 22:34:18,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:34:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2020-11-06 22:34:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2269. [2020-11-06 22:34:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2269 states. [2020-11-06 22:34:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3070 transitions. [2020-11-06 22:34:18,551 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3070 transitions. Word has length 167 [2020-11-06 22:34:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:18,552 INFO L481 AbstractCegarLoop]: Abstraction has 2269 states and 3070 transitions. [2020-11-06 22:34:18,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:34:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3070 transitions. [2020-11-06 22:34:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-06 22:34:18,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:18,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-11-06 22:34:18,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:34:18,777 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash 43475131, now seen corresponding path program 1 times [2020-11-06 22:34:18,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:18,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273918088] [2020-11-06 22:34:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:18,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:34:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:34:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:34:19,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273918088] [2020-11-06 22:34:19,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641873455] [2020-11-06 22:34:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:34:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:19,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:34:19,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:34:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-06 22:34:19,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:34:19,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-11-06 22:34:19,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460187243] [2020-11-06 22:34:19,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:34:19,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:34:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:34:19,395 INFO L87 Difference]: Start difference. First operand 2269 states and 3070 transitions. Second operand 3 states. [2020-11-06 22:34:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:20,248 INFO L93 Difference]: Finished difference Result 5628 states and 7657 transitions. [2020-11-06 22:34:20,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:34:20,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-11-06 22:34:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:20,273 INFO L225 Difference]: With dead ends: 5628 [2020-11-06 22:34:20,273 INFO L226 Difference]: Without dead ends: 3365 [2020-11-06 22:34:20,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:34:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2020-11-06 22:34:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3095. [2020-11-06 22:34:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3095 states. [2020-11-06 22:34:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4141 transitions. [2020-11-06 22:34:20,420 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4141 transitions. Word has length 173 [2020-11-06 22:34:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:20,421 INFO L481 AbstractCegarLoop]: Abstraction has 3095 states and 4141 transitions. [2020-11-06 22:34:20,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:34:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4141 transitions. [2020-11-06 22:34:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-11-06 22:34:20,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:34:20,433 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:34:20,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:34:20,648 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:34:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:34:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1817256537, now seen corresponding path program 1 times [2020-11-06 22:34:20,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:34:20,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664700020] [2020-11-06 22:34:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:34:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:20,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:34:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-11-06 22:34:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:20,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:34:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:34:20,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664700020] [2020-11-06 22:34:20,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513249820] [2020-11-06 22:34:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:34:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:34:21,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-06 22:34:21,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:34:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:34:21,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:34:21,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-11-06 22:34:21,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114058608] [2020-11-06 22:34:21,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:34:21,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:34:21,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:34:21,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:34:21,230 INFO L87 Difference]: Start difference. First operand 3095 states and 4141 transitions. Second operand 10 states. [2020-11-06 22:34:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:34:24,169 INFO L93 Difference]: Finished difference Result 7950 states and 11692 transitions. [2020-11-06 22:34:24,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 22:34:24,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-11-06 22:34:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:34:24,176 INFO L225 Difference]: With dead ends: 7950 [2020-11-06 22:34:24,176 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:34:24,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-11-06 22:34:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:34:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:34:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:34:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:34:24,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2020-11-06 22:34:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:34:24,216 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:34:24,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:34:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:34:24,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:34:24,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:34:24,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:34:25,457 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 38 [2020-11-06 22:34:25,577 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 38 [2020-11-06 22:34:25,780 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 31 [2020-11-06 22:34:26,663 WARN L194 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 40 [2020-11-06 22:34:27,113 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 21 [2020-11-06 22:34:27,118 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-11-06 22:34:27,118 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-11-06 22:34:27,118 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-11-06 22:34:27,118 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-06 22:34:27,118 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:34:27,121 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= ~a21~0 |old(~a21~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~a16~0 |old(~a16~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~y~0 |old(~y~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a17~0 |old(~a17~0)|) (= ~c~0 |old(~c~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-11-06 22:34:27,121 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:34:27,121 INFO L266 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,121 INFO L266 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,121 INFO L266 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,121 INFO L266 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,121 INFO L266 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,121 INFO L266 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-11-06 22:34:27,122 INFO L266 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-11-06 22:34:27,123 INFO L266 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-11-06 22:34:27,123 INFO L266 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-11-06 22:34:27,123 INFO L266 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,123 INFO L266 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,125 INFO L266 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,125 INFO L266 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,125 INFO L266 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,125 INFO L266 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,125 INFO L266 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-11-06 22:34:27,125 INFO L266 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-11-06 22:34:27,125 INFO L266 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,126 INFO L266 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,127 INFO L266 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,127 INFO L266 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,127 INFO L266 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,127 INFO L266 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,127 INFO L266 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-11-06 22:34:27,127 INFO L266 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-11-06 22:34:27,127 INFO L266 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-11-06 22:34:27,128 INFO L266 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-11-06 22:34:27,129 INFO L266 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-11-06 22:34:27,129 INFO L266 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-11-06 22:34:27,129 INFO L266 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-11-06 22:34:27,129 INFO L266 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-11-06 22:34:27,130 INFO L266 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L262 CegarLoopResult]: At program point L574(line 574) the Hoare annotation is: (let ((.cse0 (not (= |old(~a20~0)| 1)))) (and (not (<= 14 |old(~a8~0)|)) (or (not (= |old(~a17~0)| 1)) .cse0) (or .cse0 (not (<= 6 |old(~a16~0)|))) (not (= 4 |old(~a16~0)|)))) [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-11-06 22:34:27,131 INFO L266 CegarLoopResult]: For program point L574-1(line 574) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-11-06 22:34:27,132 INFO L266 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-11-06 22:34:27,133 INFO L266 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point calculate_outputFINAL(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point calculate_outputEXIT(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,134 INFO L266 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-11-06 22:34:27,135 INFO L266 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-11-06 22:34:27,135 INFO L266 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,136 INFO L266 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-11-06 22:34:27,137 INFO L266 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-11-06 22:34:27,138 INFO L266 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-11-06 22:34:27,138 INFO L266 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-11-06 22:34:27,138 INFO L266 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-11-06 22:34:27,138 INFO L266 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-11-06 22:34:27,138 INFO L266 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-11-06 22:34:27,139 INFO L266 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-11-06 22:34:27,140 INFO L266 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,140 INFO L266 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,140 INFO L262 CegarLoopResult]: At program point calculate_outputENTRY(lines 32 577) the Hoare annotation is: (let ((.cse2 (= ~a7~0 |old(~a7~0)|)) (.cse3 (= ~a17~0 |old(~a17~0)|)) (.cse4 (= ~a21~0 |old(~a21~0)|)) (.cse5 (= ~a20~0 |old(~a20~0)|)) (.cse6 (= ~a8~0 |old(~a8~0)|))) (let ((.cse0 (not (= |old(~a20~0)| 1))) (.cse1 (and .cse2 .cse3 .cse4 .cse5 (= ~a16~0 |old(~a16~0)|) .cse6))) (and (or .cse0 .cse1 (not (<= 6 |old(~a16~0)|))) (or (not (<= 14 |old(~a8~0)|)) .cse1) (or (and .cse2 .cse3 .cse4 .cse5 .cse6 (= ~a16~0 4)) (not (= 4 |old(~a16~0)|))) (or (not (= |old(~a17~0)| 1)) .cse0 .cse1)))) [2020-11-06 22:34:27,140 INFO L266 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,140 INFO L266 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,140 INFO L266 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,140 INFO L266 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,141 INFO L266 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-11-06 22:34:27,142 INFO L266 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,143 INFO L266 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-11-06 22:34:27,144 INFO L266 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-11-06 22:34:27,144 INFO L266 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-11-06 22:34:27,145 INFO L266 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-11-06 22:34:27,146 INFO L266 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-11-06 22:34:27,146 INFO L266 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-11-06 22:34:27,146 INFO L266 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-11-06 22:34:27,146 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:34:27,146 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a20~0 1) (= ~a7~0 0) (<= 15 ~a8~0) (= ~a17~0 1)) [2020-11-06 22:34:27,146 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:34:27,146 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:34:27,146 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 579 596) the Hoare annotation is: (or (not (= |old(~a17~0)| 1)) (and (= ~a17~0 |old(~a17~0)|) (= ~a21~0 |old(~a21~0)|) (= ~a20~0 |old(~a20~0)|) (= ~a16~0 |old(~a16~0)|) (= ~a8~0 |old(~a8~0)|) (= ~a7~0 0)) (not (<= 15 |old(~a8~0)|)) (not (= |old(~a20~0)| 1)) (not (= |old(~a7~0)| 0))) [2020-11-06 22:34:27,146 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 579 596) no Hoare annotation was computed. [2020-11-06 22:34:27,147 INFO L262 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (not (= |old(~a17~0)| 1)) (and .cse0 (= ~a17~0 1)) (<= 14 ~a8~0) (not (<= 15 |old(~a8~0)|)) (not (= |old(~a20~0)| 1)) (and (<= 6 ~a16~0) .cse0) (= ~a16~0 4) (not (= |old(~a7~0)| 0)))) [2020-11-06 22:34:27,147 INFO L266 CegarLoopResult]: For program point L593-1(line 593) no Hoare annotation was computed. [2020-11-06 22:34:27,147 INFO L266 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-11-06 22:34:27,147 INFO L262 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (not (= |old(~a17~0)| 1)) (and .cse0 (= ~a17~0 1)) (<= 14 ~a8~0) (not (<= 15 |old(~a8~0)|)) (not (= |old(~a20~0)| 1)) (and (<= 6 ~a16~0) .cse0) (= ~a16~0 4) (not (= |old(~a7~0)| 0)))) [2020-11-06 22:34:27,147 INFO L266 CegarLoopResult]: For program point L585-3(lines 579 596) no Hoare annotation was computed. [2020-11-06 22:34:27,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:34:27 BoogieIcfgContainer [2020-11-06 22:34:27,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:34:27,183 INFO L168 Benchmark]: Toolchain (without parser) took 26312.40 ms. Allocated memory was 157.3 MB in the beginning and 507.5 MB in the end (delta: 350.2 MB). Free memory was 130.4 MB in the beginning and 426.0 MB in the end (delta: -295.7 MB). Peak memory consumption was 303.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:27,184 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 128.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:34:27,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.21 ms. Allocated memory is still 157.3 MB. Free memory was 129.7 MB in the beginning and 137.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:27,190 INFO L168 Benchmark]: Boogie Preprocessor took 131.97 ms. Allocated memory is still 157.3 MB. Free memory was 137.4 MB in the beginning and 132.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:27,192 INFO L168 Benchmark]: RCFGBuilder took 1500.37 ms. Allocated memory was 157.3 MB in the beginning and 202.4 MB in the end (delta: 45.1 MB). Free memory was 132.0 MB in the beginning and 158.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:27,196 INFO L168 Benchmark]: TraceAbstraction took 23848.27 ms. Allocated memory was 202.4 MB in the beginning and 507.5 MB in the end (delta: 305.1 MB). Free memory was 157.7 MB in the beginning and 426.0 MB in the end (delta: -268.4 MB). Peak memory consumption was 284.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:34:27,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 128.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 819.21 ms. Allocated memory is still 157.3 MB. Free memory was 129.7 MB in the beginning and 137.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 131.97 ms. Allocated memory is still 157.3 MB. Free memory was 137.4 MB in the beginning and 132.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1500.37 ms. Allocated memory was 157.3 MB in the beginning and 202.4 MB in the end (delta: 45.1 MB). Free memory was 132.0 MB in the beginning and 158.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23848.27 ms. Allocated memory was 202.4 MB in the beginning and 507.5 MB in the end (delta: 305.1 MB). Free memory was 157.7 MB in the beginning and 426.0 MB in the end (delta: -268.4 MB). Peak memory consumption was 284.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: ((((((!(\old(a17) == 1) || (a20 == 1 && a17 == 1)) || 14 <= a8) || !(15 <= \old(a8))) || !(\old(a20) == 1)) || (6 <= a16 && a20 == 1)) || a16 == 4) || !(\old(a7) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.0s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 452 SDtfs, 2284 SDslu, 298 SDs, 0 SdLazy, 5715 SolverSat, 997 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 780 GetRequests, 707 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3095occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 887 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 328 PreInvPairs, 488 NumberOfFragments, 345 HoareAnnotationTreeSize, 328 FomulaSimplifications, 93419 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 5077 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1951 NumberOfCodeBlocks, 1951 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1939 ConstructedInterpolants, 0 QuantifiedInterpolants, 733325 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2094 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 300/310 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...