/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:26:18,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:26:18,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:26:18,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:26:18,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:26:18,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:26:18,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:26:18,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:26:18,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:26:18,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:26:18,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:26:18,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:26:18,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:26:18,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:26:18,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:26:18,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:26:18,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:26:18,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:26:18,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:26:18,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:26:18,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:26:18,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:26:18,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:26:18,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:26:18,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:26:18,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:26:18,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:26:18,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:26:18,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:26:18,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:26:18,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:26:18,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:26:18,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:26:18,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:26:18,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:26:18,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:26:18,303 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 02:26:18,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:26:18,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:26:18,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:26:18,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:26:18,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:26:18,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:26:18,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:26:18,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:26:18,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:26:18,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:26:18,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:26:18,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:26:18,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:26:18,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:26:18,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:26:18,331 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:26:18,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:26:18,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:26:18,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:26:18,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:26:18,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:26:18,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:26:18,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:26:18,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:26:18,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:26:18,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:26:18,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:26:18,802 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:26:18,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-11-07 02:26:18,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80635263c/2dfb849badda4508a25567aecef170bb/FLAG238455833 [2020-11-07 02:26:19,732 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:26:19,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-11-07 02:26:19,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80635263c/2dfb849badda4508a25567aecef170bb/FLAG238455833 [2020-11-07 02:26:19,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80635263c/2dfb849badda4508a25567aecef170bb [2020-11-07 02:26:19,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:26:19,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:26:19,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:26:19,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:26:19,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:26:19,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:26:19" (1/1) ... [2020-11-07 02:26:19,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484f13da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:19, skipping insertion in model container [2020-11-07 02:26:19,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:26:19" (1/1) ... [2020-11-07 02:26:19,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:26:20,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:26:20,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:26:20,709 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:26:21,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:26:21,075 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:26:21,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21 WrapperNode [2020-11-07 02:26:21,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:26:21,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:26:21,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:26:21,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:26:21,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (1/1) ... [2020-11-07 02:26:21,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (1/1) ... [2020-11-07 02:26:21,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (1/1) ... [2020-11-07 02:26:21,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (1/1) ... [2020-11-07 02:26:21,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (1/1) ... [2020-11-07 02:26:21,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (1/1) ... [2020-11-07 02:26:21,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (1/1) ... [2020-11-07 02:26:21,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:26:21,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:26:21,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:26:21,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:26:21,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (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 02:26:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:26:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:26:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:26:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:26:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:26:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:26:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:26:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:26:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:26:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-07 02:26:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-11-07 02:26:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 02:26:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-11-07 02:26:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:26:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-11-07 02:26:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-11-07 02:26:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-11-07 02:26:21,364 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-11-07 02:26:21,364 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-11-07 02:26:21,364 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-07 02:26:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 02:26:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:26:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:26:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:26:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:26:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:26:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:26:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:26:23,310 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:26:23,310 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 02:26:23,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:26:23 BoogieIcfgContainer [2020-11-07 02:26:23,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:26:23,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:26:23,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:26:23,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:26:23,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:26:19" (1/3) ... [2020-11-07 02:26:23,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574c8bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:26:23, skipping insertion in model container [2020-11-07 02:26:23,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:21" (2/3) ... [2020-11-07 02:26:23,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574c8bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:26:23, skipping insertion in model container [2020-11-07 02:26:23,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:26:23" (3/3) ... [2020-11-07 02:26:23,323 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-11-07 02:26:23,340 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:26:23,345 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:26:23,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:26:23,384 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:26:23,384 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:26:23,385 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:26:23,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:26:23,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:26:23,385 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:26:23,385 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:26:23,385 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:26:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states. [2020-11-07 02:26:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-11-07 02:26:23,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:23,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:23,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:23,510 INFO L82 PathProgramCache]: Analyzing trace with hash 298964327, now seen corresponding path program 1 times [2020-11-07 02:26:23,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:23,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362940014] [2020-11-07 02:26:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:23,604 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:24,764 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-11-07 02:26:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:25,405 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 02:26:25,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362940014] [2020-11-07 02:26:25,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:25,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:26:25,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156989647] [2020-11-07 02:26:25,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:26:25,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:26:25,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:26:25,446 INFO L87 Difference]: Start difference. First operand 1240 states. Second operand 4 states. [2020-11-07 02:26:30,525 WARN L194 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-11-07 02:26:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:31,674 INFO L93 Difference]: Finished difference Result 2027 states and 2617 transitions. [2020-11-07 02:26:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 02:26:31,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2020-11-07 02:26:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:31,716 INFO L225 Difference]: With dead ends: 2027 [2020-11-07 02:26:31,716 INFO L226 Difference]: Without dead ends: 1473 [2020-11-07 02:26:31,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:26:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-11-07 02:26:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1463. [2020-11-07 02:26:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-11-07 02:26:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1757 transitions. [2020-11-07 02:26:31,910 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1757 transitions. Word has length 465 [2020-11-07 02:26:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:31,913 INFO L481 AbstractCegarLoop]: Abstraction has 1463 states and 1757 transitions. [2020-11-07 02:26:31,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:26:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1757 transitions. [2020-11-07 02:26:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-11-07 02:26:31,926 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:31,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:31,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:26:31,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:31,929 INFO L82 PathProgramCache]: Analyzing trace with hash -432297489, now seen corresponding path program 1 times [2020-11-07 02:26:31,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:31,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680815339] [2020-11-07 02:26:31,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:31,937 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:32,662 WARN L194 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-11-07 02:26:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:33,050 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 02:26:33,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680815339] [2020-11-07 02:26:33,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:33,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:26:33,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35820229] [2020-11-07 02:26:33,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:26:33,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:33,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:26:33,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:26:33,058 INFO L87 Difference]: Start difference. First operand 1463 states and 1757 transitions. Second operand 5 states. [2020-11-07 02:26:38,853 WARN L194 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:26:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:40,622 INFO L93 Difference]: Finished difference Result 3932 states and 4780 transitions. [2020-11-07 02:26:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:26:40,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-11-07 02:26:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:40,639 INFO L225 Difference]: With dead ends: 3932 [2020-11-07 02:26:40,640 INFO L226 Difference]: Without dead ends: 2664 [2020-11-07 02:26:40,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:26:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2020-11-07 02:26:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2536. [2020-11-07 02:26:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2536 states. [2020-11-07 02:26:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 3078 transitions. [2020-11-07 02:26:40,827 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 3078 transitions. Word has length 465 [2020-11-07 02:26:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:40,828 INFO L481 AbstractCegarLoop]: Abstraction has 2536 states and 3078 transitions. [2020-11-07 02:26:40,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:26:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 3078 transitions. [2020-11-07 02:26:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-11-07 02:26:40,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:40,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:40,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:26:40,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:40,838 INFO L82 PathProgramCache]: Analyzing trace with hash -26081531, now seen corresponding path program 1 times [2020-11-07 02:26:40,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:40,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173809274] [2020-11-07 02:26:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:40,844 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:41,360 WARN L194 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-11-07 02:26:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:41,607 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 02:26:41,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173809274] [2020-11-07 02:26:41,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:41,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:26:41,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443986846] [2020-11-07 02:26:41,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:26:41,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:41,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:26:41,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:26:41,610 INFO L87 Difference]: Start difference. First operand 2536 states and 3078 transitions. Second operand 4 states. [2020-11-07 02:26:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:46,981 INFO L93 Difference]: Finished difference Result 7179 states and 8782 transitions. [2020-11-07 02:26:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:26:46,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2020-11-07 02:26:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:47,007 INFO L225 Difference]: With dead ends: 7179 [2020-11-07 02:26:47,007 INFO L226 Difference]: Without dead ends: 4872 [2020-11-07 02:26:47,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:26:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2020-11-07 02:26:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 2538. [2020-11-07 02:26:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2538 states. [2020-11-07 02:26:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3080 transitions. [2020-11-07 02:26:47,265 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3080 transitions. Word has length 466 [2020-11-07 02:26:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:47,266 INFO L481 AbstractCegarLoop]: Abstraction has 2538 states and 3080 transitions. [2020-11-07 02:26:47,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:26:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3080 transitions. [2020-11-07 02:26:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-11-07 02:26:47,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:47,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:47,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:26:47,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2116654625, now seen corresponding path program 1 times [2020-11-07 02:26:47,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:47,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221245217] [2020-11-07 02:26:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:47,281 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:47,934 WARN L194 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-11-07 02:26:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:48,209 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 02:26:48,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221245217] [2020-11-07 02:26:48,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:48,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:26:48,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274100306] [2020-11-07 02:26:48,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:26:48,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:48,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:26:48,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:26:48,214 INFO L87 Difference]: Start difference. First operand 2538 states and 3080 transitions. Second operand 5 states. [2020-11-07 02:26:54,363 WARN L194 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:26:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:26:56,248 INFO L93 Difference]: Finished difference Result 7032 states and 8584 transitions. [2020-11-07 02:26:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:26:56,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2020-11-07 02:26:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:26:56,272 INFO L225 Difference]: With dead ends: 7032 [2020-11-07 02:26:56,273 INFO L226 Difference]: Without dead ends: 4726 [2020-11-07 02:26:56,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:26:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2020-11-07 02:26:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4598. [2020-11-07 02:26:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4598 states. [2020-11-07 02:26:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 5599 transitions. [2020-11-07 02:26:56,726 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 5599 transitions. Word has length 467 [2020-11-07 02:26:56,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:26:56,727 INFO L481 AbstractCegarLoop]: Abstraction has 4598 states and 5599 transitions. [2020-11-07 02:26:56,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:26:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 5599 transitions. [2020-11-07 02:26:56,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-11-07 02:26:56,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:26:56,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:56,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:26:56,739 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:26:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:26:56,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1709089255, now seen corresponding path program 1 times [2020-11-07 02:26:56,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:26:56,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305874817] [2020-11-07 02:26:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:26:56,744 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:26:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:57,255 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-11-07 02:26:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:26:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:26:57,478 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 02:26:57,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305874817] [2020-11-07 02:26:57,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:26:57,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:26:57,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038656879] [2020-11-07 02:26:57,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:26:57,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:26:57,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:26:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:26:57,483 INFO L87 Difference]: Start difference. First operand 4598 states and 5599 transitions. Second operand 4 states. [2020-11-07 02:27:02,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:27:02,951 INFO L93 Difference]: Finished difference Result 13302 states and 16262 transitions. [2020-11-07 02:27:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:27:02,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2020-11-07 02:27:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:27:02,999 INFO L225 Difference]: With dead ends: 13302 [2020-11-07 02:27:03,000 INFO L226 Difference]: Without dead ends: 8956 [2020-11-07 02:27:03,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:27:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2020-11-07 02:27:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 4602. [2020-11-07 02:27:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4602 states. [2020-11-07 02:27:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 5603 transitions. [2020-11-07 02:27:03,557 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 5603 transitions. Word has length 468 [2020-11-07 02:27:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:27:03,558 INFO L481 AbstractCegarLoop]: Abstraction has 4602 states and 5603 transitions. [2020-11-07 02:27:03,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:27:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 5603 transitions. [2020-11-07 02:27:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-11-07 02:27:03,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:27:03,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:03,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:27:03,569 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:27:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:27:03,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2035617877, now seen corresponding path program 1 times [2020-11-07 02:27:03,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:27:03,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800639099] [2020-11-07 02:27:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:27:03,574 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:27:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:27:04,219 WARN L194 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-11-07 02:27:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:27:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:27:04,486 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 02:27:04,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800639099] [2020-11-07 02:27:04,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:27:04,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 02:27:04,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958299497] [2020-11-07 02:27:04,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 02:27:04,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:27:04,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 02:27:04,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 02:27:04,489 INFO L87 Difference]: Start difference. First operand 4602 states and 5603 transitions. Second operand 5 states. [2020-11-07 02:27:11,045 WARN L194 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-11-07 02:27:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:27:13,122 INFO L93 Difference]: Finished difference Result 13046 states and 15921 transitions. [2020-11-07 02:27:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:27:13,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 469 [2020-11-07 02:27:13,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:27:13,159 INFO L225 Difference]: With dead ends: 13046 [2020-11-07 02:27:13,159 INFO L226 Difference]: Without dead ends: 8702 [2020-11-07 02:27:13,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:27:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8702 states. [2020-11-07 02:27:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8702 to 8574. [2020-11-07 02:27:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8574 states. [2020-11-07 02:27:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8574 states to 8574 states and 10421 transitions. [2020-11-07 02:27:13,922 INFO L78 Accepts]: Start accepts. Automaton has 8574 states and 10421 transitions. Word has length 469 [2020-11-07 02:27:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:27:13,923 INFO L481 AbstractCegarLoop]: Abstraction has 8574 states and 10421 transitions. [2020-11-07 02:27:13,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 02:27:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 8574 states and 10421 transitions. [2020-11-07 02:27:13,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-11-07 02:27:13,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:27:13,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:13,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:27:13,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:27:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:27:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1003337841, now seen corresponding path program 1 times [2020-11-07 02:27:13,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:27:13,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766629012] [2020-11-07 02:27:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:27:13,946 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:27:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:27:14,525 WARN L194 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-11-07 02:27:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:27:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:27:14,734 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 02:27:14,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766629012] [2020-11-07 02:27:14,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:27:14,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:27:14,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036119953] [2020-11-07 02:27:14,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:27:14,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:27:14,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:27:14,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:27:14,739 INFO L87 Difference]: Start difference. First operand 8574 states and 10421 transitions. Second operand 4 states. [2020-11-07 02:27:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:27:21,116 INFO L93 Difference]: Finished difference Result 24720 states and 30116 transitions. [2020-11-07 02:27:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 02:27:21,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2020-11-07 02:27:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:27:21,153 INFO L225 Difference]: With dead ends: 24720 [2020-11-07 02:27:21,153 INFO L226 Difference]: Without dead ends: 16812 [2020-11-07 02:27:21,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:27:21,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16812 states. [2020-11-07 02:27:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16812 to 8582. [2020-11-07 02:27:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8582 states. [2020-11-07 02:27:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8582 states to 8582 states and 10429 transitions. [2020-11-07 02:27:22,083 INFO L78 Accepts]: Start accepts. Automaton has 8582 states and 10429 transitions. Word has length 470 [2020-11-07 02:27:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:27:22,084 INFO L481 AbstractCegarLoop]: Abstraction has 8582 states and 10429 transitions. [2020-11-07 02:27:22,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:27:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 8582 states and 10429 transitions. [2020-11-07 02:27:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-11-07 02:27:22,100 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:27:22,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:22,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:27:22,101 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:27:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:27:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1324735347, now seen corresponding path program 1 times [2020-11-07 02:27:22,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:27:22,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010082862] [2020-11-07 02:27:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:27:22,106 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:27:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:27:22,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:27:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:27:22,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:27:23,024 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 02:27:23,025 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 02:27:23,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 02:27:23,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:27:23 BoogieIcfgContainer [2020-11-07 02:27:23,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:27:23,098 INFO L168 Benchmark]: Toolchain (without parser) took 63212.60 ms. Allocated memory was 151.0 MB in the beginning and 1.1 GB in the end (delta: 901.8 MB). Free memory was 126.0 MB in the beginning and 501.1 MB in the end (delta: -375.0 MB). Peak memory consumption was 527.7 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:23,098 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 79.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:27:23,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1178.72 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 123.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:23,100 INFO L168 Benchmark]: Boogie Preprocessor took 188.70 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 118.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:23,101 INFO L168 Benchmark]: RCFGBuilder took 2047.65 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 118.1 MB in the beginning and 64.2 MB in the end (delta: 53.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:23,102 INFO L168 Benchmark]: TraceAbstraction took 59779.48 ms. Allocated memory was 181.4 MB in the beginning and 1.1 GB in the end (delta: 871.4 MB). Free memory was 64.2 MB in the beginning and 501.1 MB in the end (delta: -436.8 MB). Peak memory consumption was 434.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:27:23,106 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 151.0 MB. Free memory was 126.5 MB in the beginning and 126.4 MB in the end (delta: 79.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1178.72 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 123.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 188.70 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 118.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2047.65 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 118.1 MB in the beginning and 64.2 MB in the end (delta: 53.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 59779.48 ms. Allocated memory was 181.4 MB in the beginning and 1.1 GB in the end (delta: 871.4 MB). Free memory was 64.2 MB in the beginning and 501.1 MB in the end (delta: -436.8 MB). Peak memory consumption was 434.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_3084; [L78] int __return_3053; [L79] int __return_2989; [L80] int __return_2955; [L81] int __return_2551; [L82] int __return_2840; [L83] int __return_2806; [L84] int __return_2721; [L85] int __return_2426; [L88] int main__c1; [L89] int main__i2; [L90] main__c1 = 0 [L91] ep12 = __VERIFIER_nondet_bool() [L92] ep13 = __VERIFIER_nondet_bool() [L93] ep21 = __VERIFIER_nondet_bool() [L94] ep23 = __VERIFIER_nondet_bool() [L95] ep31 = __VERIFIER_nondet_bool() [L96] ep32 = __VERIFIER_nondet_bool() [L97] id1 = __VERIFIER_nondet_char() [L98] r1 = __VERIFIER_nondet_uchar() [L99] st1 = __VERIFIER_nondet_char() [L100] nl1 = __VERIFIER_nondet_char() [L101] m1 = __VERIFIER_nondet_char() [L102] max1 = __VERIFIER_nondet_char() [L103] mode1 = __VERIFIER_nondet_bool() [L104] newmax1 = __VERIFIER_nondet_bool() [L105] id2 = __VERIFIER_nondet_char() [L106] r2 = __VERIFIER_nondet_uchar() [L107] st2 = __VERIFIER_nondet_char() [L108] nl2 = __VERIFIER_nondet_char() [L109] m2 = __VERIFIER_nondet_char() [L110] max2 = __VERIFIER_nondet_char() [L111] mode2 = __VERIFIER_nondet_bool() [L112] newmax2 = __VERIFIER_nondet_bool() [L113] id3 = __VERIFIER_nondet_char() [L114] r3 = __VERIFIER_nondet_uchar() [L115] st3 = __VERIFIER_nondet_char() [L116] nl3 = __VERIFIER_nondet_char() [L117] m3 = __VERIFIER_nondet_char() [L118] max3 = __VERIFIER_nondet_char() [L119] mode3 = __VERIFIER_nondet_bool() [L120] newmax3 = __VERIFIER_nondet_bool() [L122] _Bool init__r121; [L123] _Bool init__r131; [L124] _Bool init__r211; [L125] _Bool init__r231; [L126] _Bool init__r311; [L127] _Bool init__r321; [L128] _Bool init__r122; [L129] int init__tmp; [L130] _Bool init__r132; [L131] int init__tmp___0; [L132] _Bool init__r212; [L133] int init__tmp___1; [L134] _Bool init__r232; [L135] int init__tmp___2; [L136] _Bool init__r312; [L137] int init__tmp___3; [L138] _Bool init__r322; [L139] int init__tmp___4; [L140] int init__tmp___5; [L141] init__r121 = ep12 [L142] init__r131 = ep13 [L143] init__r211 = ep21 [L144] init__r231 = ep23 [L145] init__r311 = ep31 [L146] init__r321 = ep32 [L147] COND FALSE !(!(init__r121 == 0)) [L3188] COND FALSE !(!(init__r131 == 0)) [L3204] init__tmp = 0 [L151] init__r122 = (_Bool)init__tmp [L152] COND FALSE !(!(init__r131 == 0)) [L3165] COND FALSE !(!(init__r121 == 0)) [L3181] init__tmp___0 = 0 [L156] init__r132 = (_Bool)init__tmp___0 [L157] COND FALSE !(!(init__r211 == 0)) [L3142] COND FALSE !(!(init__r231 == 0)) [L3158] init__tmp___1 = 0 [L161] init__r212 = (_Bool)init__tmp___1 [L162] COND FALSE !(!(init__r231 == 0)) [L3119] COND FALSE !(!(init__r211 == 0)) [L3135] init__tmp___2 = 0 [L166] init__r232 = (_Bool)init__tmp___2 [L167] COND FALSE !(!(init__r311 == 0)) [L3096] COND FALSE !(!(init__r321 == 0)) [L3112] init__tmp___3 = 0 [L171] init__r312 = (_Bool)init__tmp___3 [L172] COND FALSE !(!(init__r321 == 0)) [L3073] COND FALSE !(!(init__r311 == 0)) [L3089] init__tmp___4 = 0 [L176] init__r322 = (_Bool)init__tmp___4 [L177] COND TRUE ((int)id1) != ((int)id2) [L179] COND TRUE ((int)id1) != ((int)id3) [L181] COND TRUE ((int)id2) != ((int)id3) [L183] COND TRUE ((int)id1) >= 0 [L185] COND TRUE ((int)id2) >= 0 [L187] COND TRUE ((int)id3) >= 0 [L189] COND TRUE ((int)r1) == 0 [L191] COND TRUE ((int)r2) == 0 [L193] COND TRUE ((int)r3) == 0 [L195] COND TRUE ((int)max1) == ((int)id1) [L197] COND TRUE ((int)max2) == ((int)id2) [L199] COND TRUE ((int)max3) == ((int)id3) [L201] COND TRUE ((int)st1) == 0 [L203] COND TRUE ((int)st2) == 0 [L205] COND TRUE ((int)st3) == 0 [L207] COND TRUE ((int)nl1) == 0 [L209] COND TRUE ((int)nl2) == 0 [L211] COND TRUE ((int)nl3) == 0 [L213] COND TRUE ((int)mode1) == 0 [L215] COND TRUE ((int)mode2) == 0 [L217] COND TRUE ((int)mode3) == 0 [L219] COND TRUE !(newmax1 == 0) [L221] COND TRUE !(newmax2 == 0) [L223] COND TRUE !(newmax3 == 0) [L225] init__tmp___5 = 1 [L226] __return_1873 = init__tmp___5 [L227] main__i2 = __return_1873 [L228] COND TRUE main__i2 != 0 [L230] p12_old = nomsg [L231] p12_new = nomsg [L232] p13_old = nomsg [L233] p13_new = nomsg [L234] p21_old = nomsg [L235] p21_new = nomsg [L236] p23_old = nomsg [L237] p23_new = nomsg [L238] p31_old = nomsg [L239] p31_new = nomsg [L240] p32_old = nomsg [L241] p32_new = nomsg [L242] main__i2 = 0 [L244] _Bool node1__newmax; [L245] node1__newmax = 0 [L246] COND FALSE !(!(mode1 == 0)) [L252] COND TRUE ((int)r1) < 2 [L254] COND FALSE !(!(ep12 == 0)) [L267] COND FALSE !(!(ep13 == 0)) [L280] mode1 = 1 [L282] _Bool node2__newmax; [L283] node2__newmax = 0 [L284] COND FALSE !(!(mode2 == 0)) [L290] COND TRUE ((int)r2) < 2 [L292] COND FALSE !(!(ep21 == 0)) [L305] COND FALSE !(!(ep23 == 0)) [L318] mode2 = 1 [L320] _Bool node3__newmax; [L321] node3__newmax = 0 [L322] COND FALSE !(!(mode3 == 0)) [L328] COND TRUE ((int)r3) < 2 [L330] COND FALSE !(!(ep31 == 0)) [L343] COND FALSE !(!(ep32 == 0)) [L356] mode3 = 1 [L357] p12_old = p12_new [L358] p12_new = nomsg [L359] p13_old = p13_new [L360] p13_new = nomsg [L361] p21_old = p21_new [L362] p21_new = nomsg [L363] p23_old = p23_new [L364] p23_new = nomsg [L365] p31_old = p31_new [L366] p31_new = nomsg [L367] p32_old = p32_new [L368] p32_new = nomsg [L370] int check__tmp; [L371] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L373] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L375] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L377] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L379] COND FALSE !(((int)r1) >= 2) [L385] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L387] COND TRUE ((int)r1) < 2 [L389] COND FALSE !(((int)r1) >= 2) [L395] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L397] COND TRUE ((int)r1) < 2 [L399] check__tmp = 1 [L400] __return_2019 = check__tmp [L401] main__c1 = __return_2019 [L403] _Bool __tmp_1; [L404] __tmp_1 = main__c1 [L405] _Bool assert__arg; [L406] assert__arg = __tmp_1 [L407] COND FALSE !(assert__arg == 0) [L414] _Bool node1__newmax; [L415] node1__newmax = 0 [L416] COND TRUE !(mode1 == 0) [L418] COND FALSE !(r1 == 255) [L424] r1 = r1 + 1 [L425] COND FALSE !(!(ep21 == 0)) [L434] COND FALSE !(!(ep31 == 0)) [L443] newmax1 = node1__newmax [L444] COND FALSE !(((int)r1) == 2) [L450] mode1 = 0 [L452] _Bool node2__newmax; [L453] node2__newmax = 0 [L454] COND TRUE !(mode2 == 0) [L456] COND FALSE !(r2 == 255) [L462] r2 = r2 + 1 [L463] COND FALSE !(!(ep12 == 0)) [L472] COND FALSE !(!(ep32 == 0)) [L481] newmax2 = node2__newmax [L482] COND FALSE !(((int)r2) == 2) [L488] mode2 = 0 [L490] _Bool node3__newmax; [L491] node3__newmax = 0 [L492] COND TRUE !(mode3 == 0) [L494] COND FALSE !(r3 == 255) [L500] r3 = r3 + 1 [L501] COND FALSE !(!(ep13 == 0)) [L510] COND FALSE !(!(ep23 == 0)) [L519] newmax3 = node3__newmax [L520] COND FALSE !(((int)r3) == 2) [L526] mode3 = 0 [L527] p12_old = p12_new [L528] p12_new = nomsg [L529] p13_old = p13_new [L530] p13_new = nomsg [L531] p21_old = p21_new [L532] p21_new = nomsg [L533] p23_old = p23_new [L534] p23_new = nomsg [L535] p31_old = p31_new [L536] p31_new = nomsg [L537] p32_old = p32_new [L538] p32_new = nomsg [L540] int check__tmp; [L541] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L543] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L545] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L547] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L549] COND FALSE !(((int)r1) >= 2) [L555] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L557] COND TRUE ((int)r1) < 2 [L559] COND FALSE !(((int)r1) >= 2) [L565] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L567] COND TRUE ((int)r1) < 2 [L569] check__tmp = 1 [L570] __return_2152 = check__tmp [L571] main__c1 = __return_2152 [L573] _Bool __tmp_2; [L574] __tmp_2 = main__c1 [L575] _Bool assert__arg; [L576] assert__arg = __tmp_2 [L577] COND FALSE !(assert__arg == 0) [L584] _Bool node1__newmax; [L585] node1__newmax = 0 [L586] COND FALSE !(!(mode1 == 0)) [L592] COND TRUE ((int)r1) < 2 [L594] COND FALSE !(!(ep12 == 0)) [L607] COND FALSE !(!(ep13 == 0)) [L620] mode1 = 1 [L622] _Bool node2__newmax; [L623] node2__newmax = 0 [L624] COND FALSE !(!(mode2 == 0)) [L630] COND TRUE ((int)r2) < 2 [L632] COND FALSE !(!(ep21 == 0)) [L645] COND FALSE !(!(ep23 == 0)) [L658] mode2 = 1 [L660] _Bool node3__newmax; [L661] node3__newmax = 0 [L662] COND FALSE !(!(mode3 == 0)) [L668] COND TRUE ((int)r3) < 2 [L670] COND FALSE !(!(ep31 == 0)) [L683] COND FALSE !(!(ep32 == 0)) [L696] mode3 = 1 [L697] p12_old = p12_new [L698] p12_new = nomsg [L699] p13_old = p13_new [L700] p13_new = nomsg [L701] p21_old = p21_new [L702] p21_new = nomsg [L703] p23_old = p23_new [L704] p23_new = nomsg [L705] p31_old = p31_new [L706] p31_new = nomsg [L707] p32_old = p32_new [L708] p32_new = nomsg [L710] int check__tmp; [L711] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L713] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L715] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L717] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L719] COND FALSE !(((int)r1) >= 2) [L725] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L727] COND TRUE ((int)r1) < 2 [L729] COND FALSE !(((int)r1) >= 2) [L735] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L737] COND TRUE ((int)r1) < 2 [L739] check__tmp = 1 [L740] __return_2288 = check__tmp [L741] main__c1 = __return_2288 [L743] _Bool __tmp_3; [L744] __tmp_3 = main__c1 [L745] _Bool assert__arg; [L746] assert__arg = __tmp_3 [L747] COND FALSE !(assert__arg == 0) [L754] _Bool node1__newmax; [L755] node1__newmax = 0 [L756] COND TRUE !(mode1 == 0) [L758] COND FALSE !(r1 == 255) [L764] r1 = r1 + 1 [L765] COND FALSE !(!(ep21 == 0)) [L774] COND FALSE !(!(ep31 == 0)) [L783] newmax1 = node1__newmax [L784] COND TRUE ((int)r1) == 2 [L786] COND TRUE ((int)max1) == ((int)id1) [L788] st1 = 1 [L789] mode1 = 0 [L791] _Bool node2__newmax; [L792] node2__newmax = 0 [L793] COND TRUE !(mode2 == 0) [L795] COND FALSE !(r2 == 255) [L801] r2 = r2 + 1 [L802] COND FALSE !(!(ep12 == 0)) [L811] COND FALSE !(!(ep32 == 0)) [L820] newmax2 = node2__newmax [L821] COND TRUE ((int)r2) == 2 [L823] COND TRUE ((int)max2) == ((int)id2) [L825] st2 = 1 [L826] mode2 = 0 [L828] _Bool node3__newmax; [L829] node3__newmax = 0 [L830] COND TRUE !(mode3 == 0) [L832] COND FALSE !(r3 == 255) [L838] r3 = r3 + 1 [L839] COND FALSE !(!(ep13 == 0)) [L848] COND FALSE !(!(ep23 == 0)) [L857] newmax3 = node3__newmax [L858] COND TRUE ((int)r3) == 2 [L860] COND TRUE ((int)max3) == ((int)id3) [L862] st3 = 1 [L863] mode3 = 0 [L864] p12_old = p12_new [L865] p12_new = nomsg [L866] p13_old = p13_new [L867] p13_new = nomsg [L868] p21_old = p21_new [L869] p21_new = nomsg [L870] p23_old = p23_new [L871] p23_new = nomsg [L872] p31_old = p31_new [L873] p31_new = nomsg [L874] p32_old = p32_new [L875] p32_new = nomsg [L877] int check__tmp; [L878] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L884] check__tmp = 0 [L885] __return_3084 = check__tmp [L886] main__c1 = __return_3084 [L888] _Bool __tmp_4; [L889] __tmp_4 = main__c1 [L890] _Bool assert__arg; [L891] assert__arg = __tmp_4 [L892] COND TRUE assert__arg == 0 [L894] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 1245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 59.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 48.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12168 SDtfs, 10842 SDslu, 8942 SDs, 0 SdLazy, 12473 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8582occurred 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: 3.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 15312 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...