/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:16:15,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:16:15,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:16:15,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:16:15,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:16:15,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:16:15,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:16:15,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:16:15,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:16:15,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:16:15,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:16:15,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:16:15,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:16:15,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:16:15,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:16:15,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:16:15,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:16:15,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:16:15,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:16:15,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:16:15,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:16:15,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:16:15,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:16:15,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:16:15,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:16:15,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:16:15,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:16:15,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:16:15,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:16:15,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:16:15,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:16:15,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:16:15,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:16:15,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:16:15,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:16:15,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:16:15,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:16:15,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:16:15,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:16:15,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:16:15,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:16:15,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:16:15,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:16:15,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:16:15,646 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:16:15,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:16:15,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:16:15,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:15,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:16:15,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:16:15,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:16:15,648 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:16:16,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:16:16,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:16:16,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:16:16,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:16:16,029 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:16:16,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-11-07 05:16:16,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6fefd0c/ac366d427f0946559acb9245369ec7ec/FLAGd665da967 [2020-11-07 05:16:16,717 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:16:16,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-11-07 05:16:16,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6fefd0c/ac366d427f0946559acb9245369ec7ec/FLAGd665da967 [2020-11-07 05:16:17,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec6fefd0c/ac366d427f0946559acb9245369ec7ec [2020-11-07 05:16:17,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:16:17,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:16:17,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:17,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:16:17,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:16:17,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc8c830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17, skipping insertion in model container [2020-11-07 05:16:17,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:16:17,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:16:17,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:17,399 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:16:17,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:17,476 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:16:17,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17 WrapperNode [2020-11-07 05:16:17,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:17,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:16:17,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:16:17,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:16:17,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (1/1) ... [2020-11-07 05:16:17,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:16:17,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:16:17,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:16:17,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:16:17,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (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 [2020-11-07 05:16:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:16:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:16:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:16:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-11-07 05:16:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-11-07 05:16:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-11-07 05:16:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-11-07 05:16:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-11-07 05:16:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-11-07 05:16:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-11-07 05:16:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-11-07 05:16:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-11-07 05:16:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:16:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:16:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:16:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:16:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:16:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-11-07 05:16:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:16:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-11-07 05:16:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-11-07 05:16:17,647 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-11-07 05:16:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-11-07 05:16:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-11-07 05:16:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-11-07 05:16:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-11-07 05:16:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-11-07 05:16:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:16:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:16:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:16:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:16:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:16:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:16:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:16:18,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:16:18,120 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:16:18,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:18 BoogieIcfgContainer [2020-11-07 05:16:18,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:16:18,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:16:18,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:16:18,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:16:18,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:16:17" (1/3) ... [2020-11-07 05:16:18,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a3252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:18, skipping insertion in model container [2020-11-07 05:16:18,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:17" (2/3) ... [2020-11-07 05:16:18,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a3252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:18, skipping insertion in model container [2020-11-07 05:16:18,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:18" (3/3) ... [2020-11-07 05:16:18,131 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-11-07 05:16:18,146 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:16:18,149 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:16:18,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:16:18,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:16:18,182 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:16:18,182 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:16:18,182 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:16:18,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:16:18,182 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:16:18,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:16:18,182 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:16:18,199 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-11-07 05:16:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 05:16:18,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:18,210 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] [2020-11-07 05:16:18,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:18,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:18,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1164333913, now seen corresponding path program 1 times [2020-11-07 05:16:18,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:18,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591889311] [2020-11-07 05:16:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:16:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:18,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591889311] [2020-11-07 05:16:18,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:18,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:16:18,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395861135] [2020-11-07 05:16:18,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:16:18,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:18,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:16:18,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:16:18,655 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-11-07 05:16:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:19,203 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2020-11-07 05:16:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 05:16:19,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-07 05:16:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:19,218 INFO L225 Difference]: With dead ends: 212 [2020-11-07 05:16:19,218 INFO L226 Difference]: Without dead ends: 110 [2020-11-07 05:16:19,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:16:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-07 05:16:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2020-11-07 05:16:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-07 05:16:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-11-07 05:16:19,287 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 28 [2020-11-07 05:16:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:19,288 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-11-07 05:16:19,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:16:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-11-07 05:16:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 05:16:19,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:19,290 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] [2020-11-07 05:16:19,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:16:19,291 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:19,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:19,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1140018033, now seen corresponding path program 1 times [2020-11-07 05:16:19,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:19,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292963990] [2020-11-07 05:16:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:19,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:16:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:19,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292963990] [2020-11-07 05:16:19,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:19,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:16:19,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055630226] [2020-11-07 05:16:19,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:16:19,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:19,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:16:19,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:16:19,492 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 5 states. [2020-11-07 05:16:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:19,981 INFO L93 Difference]: Finished difference Result 181 states and 212 transitions. [2020-11-07 05:16:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:16:19,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-07 05:16:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:19,985 INFO L225 Difference]: With dead ends: 181 [2020-11-07 05:16:19,985 INFO L226 Difference]: Without dead ends: 173 [2020-11-07 05:16:19,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:16:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-07 05:16:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2020-11-07 05:16:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-11-07 05:16:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 199 transitions. [2020-11-07 05:16:20,021 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 199 transitions. Word has length 30 [2020-11-07 05:16:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:20,021 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 199 transitions. [2020-11-07 05:16:20,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:16:20,022 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 199 transitions. [2020-11-07 05:16:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 05:16:20,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:20,024 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] [2020-11-07 05:16:20,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:16:20,025 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:20,025 INFO L82 PathProgramCache]: Analyzing trace with hash -555133441, now seen corresponding path program 1 times [2020-11-07 05:16:20,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:20,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819965113] [2020-11-07 05:16:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:16:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-07 05:16:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:20,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819965113] [2020-11-07 05:16:20,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:20,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:16:20,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185222230] [2020-11-07 05:16:20,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:16:20,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:20,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:16:20,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:16:20,197 INFO L87 Difference]: Start difference. First operand 169 states and 199 transitions. Second operand 6 states. [2020-11-07 05:16:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:20,669 INFO L93 Difference]: Finished difference Result 421 states and 524 transitions. [2020-11-07 05:16:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 05:16:20,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-11-07 05:16:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:20,673 INFO L225 Difference]: With dead ends: 421 [2020-11-07 05:16:20,673 INFO L226 Difference]: Without dead ends: 274 [2020-11-07 05:16:20,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:16:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-11-07 05:16:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 209. [2020-11-07 05:16:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-07 05:16:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2020-11-07 05:16:20,709 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 47 [2020-11-07 05:16:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:20,709 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2020-11-07 05:16:20,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:16:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2020-11-07 05:16:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-07 05:16:20,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:20,713 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] [2020-11-07 05:16:20,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:16:20,713 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash -255317781, now seen corresponding path program 1 times [2020-11-07 05:16:20,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:20,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747502305] [2020-11-07 05:16:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:16:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 05:16:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:20,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747502305] [2020-11-07 05:16:20,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:16:20,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 05:16:20,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779980322] [2020-11-07 05:16:20,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:16:20,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:20,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:16:20,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:16:20,938 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 8 states. [2020-11-07 05:16:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:21,612 INFO L93 Difference]: Finished difference Result 523 states and 653 transitions. [2020-11-07 05:16:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 05:16:21,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-11-07 05:16:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:21,616 INFO L225 Difference]: With dead ends: 523 [2020-11-07 05:16:21,616 INFO L226 Difference]: Without dead ends: 336 [2020-11-07 05:16:21,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:16:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-11-07 05:16:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 249. [2020-11-07 05:16:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-11-07 05:16:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 305 transitions. [2020-11-07 05:16:21,667 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 305 transitions. Word has length 68 [2020-11-07 05:16:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:21,670 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 305 transitions. [2020-11-07 05:16:21,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:16:21,670 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 305 transitions. [2020-11-07 05:16:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 05:16:21,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:21,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-11-07 05:16:21,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:16:21,682 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:21,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1130016885, now seen corresponding path program 1 times [2020-11-07 05:16:21,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:21,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453179601] [2020-11-07 05:16:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:16:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 05:16:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-11-07 05:16:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-07 05:16:21,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453179601] [2020-11-07 05:16:21,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:21,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:16:21,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144966153] [2020-11-07 05:16:21,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:16:21,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:21,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:16:21,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:16:21,963 INFO L87 Difference]: Start difference. First operand 249 states and 305 transitions. Second operand 6 states. [2020-11-07 05:16:22,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:22,720 INFO L93 Difference]: Finished difference Result 863 states and 1097 transitions. [2020-11-07 05:16:22,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 05:16:22,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-11-07 05:16:22,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:22,728 INFO L225 Difference]: With dead ends: 863 [2020-11-07 05:16:22,728 INFO L226 Difference]: Without dead ends: 636 [2020-11-07 05:16:22,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-07 05:16:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-11-07 05:16:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 402. [2020-11-07 05:16:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-11-07 05:16:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 498 transitions. [2020-11-07 05:16:22,807 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 498 transitions. Word has length 88 [2020-11-07 05:16:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:22,807 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 498 transitions. [2020-11-07 05:16:22,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:16:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 498 transitions. [2020-11-07 05:16:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-07 05:16:22,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:22,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-11-07 05:16:22,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:16:22,811 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:22,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1472238029, now seen corresponding path program 1 times [2020-11-07 05:16:22,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:22,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510273565] [2020-11-07 05:16:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:16:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 05:16:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 05:16:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-07 05:16:22,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510273565] [2020-11-07 05:16:22,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:22,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:16:22,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799401982] [2020-11-07 05:16:22,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:16:22,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:22,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:16:22,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:16:22,986 INFO L87 Difference]: Start difference. First operand 402 states and 498 transitions. Second operand 6 states. [2020-11-07 05:16:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:23,409 INFO L93 Difference]: Finished difference Result 938 states and 1175 transitions. [2020-11-07 05:16:23,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:16:23,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-11-07 05:16:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:23,414 INFO L225 Difference]: With dead ends: 938 [2020-11-07 05:16:23,414 INFO L226 Difference]: Without dead ends: 558 [2020-11-07 05:16:23,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-07 05:16:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-11-07 05:16:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 408. [2020-11-07 05:16:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-11-07 05:16:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 498 transitions. [2020-11-07 05:16:23,473 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 498 transitions. Word has length 89 [2020-11-07 05:16:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:23,474 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 498 transitions. [2020-11-07 05:16:23,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:16:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 498 transitions. [2020-11-07 05:16:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-07 05:16:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:23,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-11-07 05:16:23,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:16:23,476 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:23,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2103210319, now seen corresponding path program 1 times [2020-11-07 05:16:23,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:23,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898518504] [2020-11-07 05:16:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 05:16:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 05:16:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-11-07 05:16:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 05:16:23,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898518504] [2020-11-07 05:16:23,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:23,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:16:23,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646205546] [2020-11-07 05:16:23,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:16:23,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:23,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:16:23,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:16:23,615 INFO L87 Difference]: Start difference. First operand 408 states and 498 transitions. Second operand 8 states. [2020-11-07 05:16:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:24,239 INFO L93 Difference]: Finished difference Result 1180 states and 1519 transitions. [2020-11-07 05:16:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 05:16:24,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-11-07 05:16:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:24,245 INFO L225 Difference]: With dead ends: 1180 [2020-11-07 05:16:24,245 INFO L226 Difference]: Without dead ends: 794 [2020-11-07 05:16:24,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:16:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-11-07 05:16:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 488. [2020-11-07 05:16:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-11-07 05:16:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 612 transitions. [2020-11-07 05:16:24,307 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 612 transitions. Word has length 88 [2020-11-07 05:16:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:24,308 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 612 transitions. [2020-11-07 05:16:24,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:16:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 612 transitions. [2020-11-07 05:16:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-11-07 05:16:24,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:24,310 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-11-07 05:16:24,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:16:24,311 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash -583058978, now seen corresponding path program 1 times [2020-11-07 05:16:24,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:24,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546759001] [2020-11-07 05:16:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:16:24,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:16:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:16:24,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:16:24,383 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:16:24,383 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:16:24,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 05:16:24,429 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,430 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,432 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,432 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,433 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,434 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,434 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,436 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,436 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,437 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,438 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,438 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,439 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,440 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,441 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,441 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,442 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,443 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,443 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,444 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-11-07 05:16:24,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:16:24 BoogieIcfgContainer [2020-11-07 05:16:24,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:16:24,463 INFO L168 Benchmark]: Toolchain (without parser) took 7347.78 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 126.7 MB in the beginning and 114.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 79.6 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:24,465 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:16:24,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.67 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:24,467 INFO L168 Benchmark]: Boogie Preprocessor took 71.37 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:24,467 INFO L168 Benchmark]: RCFGBuilder took 566.69 ms. Allocated memory is still 152.0 MB. Free memory was 114.6 MB in the beginning and 127.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:24,468 INFO L168 Benchmark]: TraceAbstraction took 6336.91 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 126.9 MB in the beginning and 114.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:24,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 348.67 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.37 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 566.69 ms. Allocated memory is still 152.0 MB. Free memory was 114.6 MB in the beginning and 127.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6336.91 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 126.9 MB in the beginning and 114.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int ldv_mutex = 1; VAL [\old(ldv_mutex)=55, \old(open_called)=51, ldv_mutex=1, open_called=51] [L13] int open_called = 0; VAL [\old(ldv_mutex)=55, \old(open_called)=51, ldv_mutex=1, open_called=0] [L76] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L77] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L71] open_called = 0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L72] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L77] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L83] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L84] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L59] COND TRUE __VERIFIER_nondet_int() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, open_called=0] [L61] return 1; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=1, ldv_mutex=1, open_called=0] [L84] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L85] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L82] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L91] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L92] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L54] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L92] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L93] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L82] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L90] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L99] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L100] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L50] return 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, \result=0, ldv_mutex=1, open_called=0] [L100] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L101] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L78] COND TRUE __VERIFIER_nondet_int() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L82] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L90] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L98] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L107] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L108] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L36] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L43] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L19] ldv_mutex = 2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L43] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L44] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L18] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L18] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L6] CALL reach_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L3] __assert_fail("0", "stateful_check.c", 3, "reach_error") VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 847 SDtfs, 1261 SDslu, 1529 SDs, 0 SdLazy, 1445 SolverSat, 335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred 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: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 851 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 548 NumberOfCodeBlocks, 548 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 431 ConstructedInterpolants, 0 QuantifiedInterpolants, 76187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 68/74 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 incorrect! Received shutdown request...