./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-009.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-009.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 467fcaafa9af0a00772f5009c99943c6cb7078cb0bca94a00a243b41a6183129 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:21:48,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:21:48,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:21:48,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:21:48,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:21:48,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:21:48,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:21:48,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:21:48,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:21:48,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:21:48,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:21:48,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:21:48,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:21:48,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:21:48,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:21:48,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:21:48,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:21:48,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:21:48,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:21:48,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:21:48,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:21:48,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:21:48,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:21:48,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:21:48,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:21:48,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:21:48,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:21:48,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:21:48,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:21:48,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:21:48,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:21:48,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:21:48,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:21:48,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:21:48,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:21:48,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:21:48,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:21:48,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:21:48,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:21:48,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:21:48,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:21:48,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:21:48,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:21:48,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:21:48,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:21:48,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:21:48,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:21:48,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:21:48,406 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:21:48,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:21:48,407 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:21:48,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:21:48,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:21:48,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:21:48,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:21:48,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:21:48,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:21:48,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:21:48,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:21:48,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:21:48,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:21:48,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:21:48,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:21:48,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:21:48,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:21:48,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:21:48,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:21:48,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:21:48,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:21:48,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:21:48,411 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:21:48,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:21:48,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:21:48,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:21:48,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 467fcaafa9af0a00772f5009c99943c6cb7078cb0bca94a00a243b41a6183129 [2021-11-22 14:21:48,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:21:48,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:21:48,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:21:48,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:21:48,762 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:21:48,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/xcsp/AllInterval-009.c [2021-11-22 14:21:48,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/data/26065a360/1fe0ba6b7d4644d6be6f2cb54b5dcba5/FLAG1fea3852c [2021-11-22 14:21:49,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:21:49,420 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/sv-benchmarks/c/xcsp/AllInterval-009.c [2021-11-22 14:21:49,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/data/26065a360/1fe0ba6b7d4644d6be6f2cb54b5dcba5/FLAG1fea3852c [2021-11-22 14:21:49,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/data/26065a360/1fe0ba6b7d4644d6be6f2cb54b5dcba5 [2021-11-22 14:21:49,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:21:49,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:21:49,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:21:49,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:21:49,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:21:49,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:49" (1/1) ... [2021-11-22 14:21:49,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1772d108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:49, skipping insertion in model container [2021-11-22 14:21:49,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:49" (1/1) ... [2021-11-22 14:21:49,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:21:49,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:21:50,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/sv-benchmarks/c/xcsp/AllInterval-009.c[5030,5043] [2021-11-22 14:21:50,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:21:50,016 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:21:50,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/sv-benchmarks/c/xcsp/AllInterval-009.c[5030,5043] [2021-11-22 14:21:50,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:21:50,064 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:21:50,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50 WrapperNode [2021-11-22 14:21:50,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:21:50,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:21:50,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:21:50,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:21:50,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,151 INFO L137 Inliner]: procedures = 13, calls = 113, calls flagged for inlining = 108, calls inlined = 108, statements flattened = 558 [2021-11-22 14:21:50,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:21:50,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:21:50,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:21:50,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:21:50,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:21:50,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:21:50,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:21:50,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:21:50,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (1/1) ... [2021-11-22 14:21:50,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:21:50,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:21:50,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:21:50,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853202f8-22a4-40e7-88da-4db7802720e1/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:21:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:21:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:21:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:21:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:21:50,457 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:21:50,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:21:51,047 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:21:51,059 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:21:51,059 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 14:21:51,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:21:51 BoogieIcfgContainer [2021-11-22 14:21:51,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:21:51,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:21:51,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:21:51,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:21:51,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:21:49" (1/3) ... [2021-11-22 14:21:51,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491c1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:21:51, skipping insertion in model container [2021-11-22 14:21:51,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:50" (2/3) ... [2021-11-22 14:21:51,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491c1fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:21:51, skipping insertion in model container [2021-11-22 14:21:51,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:21:51" (3/3) ... [2021-11-22 14:21:51,093 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-009.c [2021-11-22 14:21:51,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:21:51,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:21:51,161 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:21:51,169 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:21:51,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:21:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 233 states have (on average 1.4935622317596566) internal successors, (348), 234 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:21:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-22 14:21:51,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:21:51,217 INFO L514 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] [2021-11-22 14:21:51,218 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:21:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:21:51,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1771615758, now seen corresponding path program 1 times [2021-11-22 14:21:51,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:21:51,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785575954] [2021-11-22 14:21:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:21:51,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:21:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:21:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:21:51,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:21:51,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785575954] [2021-11-22 14:21:51,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785575954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:21:51,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:21:51,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:21:51,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720427691] [2021-11-22 14:21:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:21:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:21:51,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:21:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:21:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:21:51,495 INFO L87 Difference]: Start difference. First operand has 235 states, 233 states have (on average 1.4935622317596566) internal successors, (348), 234 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:21:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:21:51,533 INFO L93 Difference]: Finished difference Result 464 states and 690 transitions. [2021-11-22 14:21:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:21:51,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-11-22 14:21:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:21:51,547 INFO L225 Difference]: With dead ends: 464 [2021-11-22 14:21:51,547 INFO L226 Difference]: Without dead ends: 232 [2021-11-22 14:21:51,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:21:51,554 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:21:51,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:21:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-22 14:21:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-22 14:21:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0346320346320346) internal successors, (239), 231 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:21:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 239 transitions. [2021-11-22 14:21:51,605 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 239 transitions. Word has length 231 [2021-11-22 14:21:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:21:51,605 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 239 transitions. [2021-11-22 14:21:51,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:21:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 239 transitions. [2021-11-22 14:21:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-22 14:21:51,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:21:51,612 INFO L514 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] [2021-11-22 14:21:51,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:21:51,613 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:21:51,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:21:51,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1473728428, now seen corresponding path program 1 times [2021-11-22 14:21:51,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:21:51,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152931776] [2021-11-22 14:21:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:21:51,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:21:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:21,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:22:21,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152931776] [2021-11-22 14:22:21,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152931776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:21,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:21,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-11-22 14:22:21,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022817939] [2021-11-22 14:22:21,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:21,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-22 14:22:21,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:22:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-22 14:22:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2021-11-22 14:22:21,880 INFO L87 Difference]: Start difference. First operand 232 states and 239 transitions. Second operand has 54 states, 54 states have (on average 4.277777777777778) internal successors, (231), 54 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:23:53,840 INFO L93 Difference]: Finished difference Result 310 states and 322 transitions. [2021-11-22 14:23:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-22 14:23:53,845 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.277777777777778) internal successors, (231), 54 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2021-11-22 14:23:53,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:23:53,849 INFO L225 Difference]: With dead ends: 310 [2021-11-22 14:23:53,849 INFO L226 Difference]: Without dead ends: 305 [2021-11-22 14:23:53,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 96.0s TimeCoverageRelationStatistics Valid=3310, Invalid=8680, Unknown=0, NotChecked=0, Total=11990 [2021-11-22 14:23:53,857 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2392 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 4517 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:23:53,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2392 Valid, 2321 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 4517 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-11-22 14:23:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-22 14:23:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 248. [2021-11-22 14:23:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0445344129554657) internal successors, (258), 247 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 258 transitions. [2021-11-22 14:23:53,877 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 258 transitions. Word has length 231 [2021-11-22 14:23:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:23:53,879 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 258 transitions. [2021-11-22 14:23:53,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.277777777777778) internal successors, (231), 54 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 258 transitions. [2021-11-22 14:23:53,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-22 14:23:53,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:23:53,893 INFO L514 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] [2021-11-22 14:23:53,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:23:53,894 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:23:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:23:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1475575470, now seen corresponding path program 1 times [2021-11-22 14:23:53,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:23:53,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803682019] [2021-11-22 14:23:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:23:53,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:23:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat