./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:58:57,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:58:57,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:58:57,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:58:57,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:58:57,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:58:57,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:58:57,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:58:57,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:58:57,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:58:57,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:58:57,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:58:57,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:58:57,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:58:57,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:58:57,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:58:57,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:58:57,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:58:57,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:58:57,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:58:57,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:58:58,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:58:58,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:58:58,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:58:58,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:58:58,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:58:58,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:58:58,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:58:58,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:58:58,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:58:58,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:58:58,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:58:58,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:58:58,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:58:58,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:58:58,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:58:58,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:58:58,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:58:58,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:58:58,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:58:58,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:58:58,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:58:58,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:58:58,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:58:58,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:58:58,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:58:58,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:58:58,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:58:58,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:58:58,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:58:58,036 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:58:58,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:58:58,037 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:58:58,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:58:58,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:58:58,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:58:58,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:58:58,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:58:58,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:58:58,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:58:58,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:58:58,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:58:58,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:58:58,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:58:58,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:58:58,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:58:58,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:58:58,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:58:58,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:58:58,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2021-12-21 13:58:58,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:58:58,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:58:58,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:58:58,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:58:58,270 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:58:58,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2021-12-21 13:58:58,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f19328f7/837c0d0bd3cb475f8bdcbd97d8afaaa0/FLAG1852ff7b4 [2021-12-21 13:58:58,741 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:58:58,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2021-12-21 13:58:58,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f19328f7/837c0d0bd3cb475f8bdcbd97d8afaaa0/FLAG1852ff7b4 [2021-12-21 13:58:58,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f19328f7/837c0d0bd3cb475f8bdcbd97d8afaaa0 [2021-12-21 13:58:58,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:58:58,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:58:58,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:58:58,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:58:58,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:58:58,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:58:58" (1/1) ... [2021-12-21 13:58:58,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597ab5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:58, skipping insertion in model container [2021-12-21 13:58:58,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:58:58" (1/1) ... [2021-12-21 13:58:58,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:58:58,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:58:59,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2021-12-21 13:58:59,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:58:59,189 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:58:59,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2021-12-21 13:58:59,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:58:59,306 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:58:59,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59 WrapperNode [2021-12-21 13:58:59,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:58:59,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:58:59,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:58:59,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:58:59,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,376 INFO L137 Inliner]: procedures = 254, calls = 276, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 640 [2021-12-21 13:58:59,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:58:59,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:58:59,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:58:59,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:58:59,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:58:59,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:58:59,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:58:59,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:58:59,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (1/1) ... [2021-12-21 13:58:59,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:58:59,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:58:59,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:58:59,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:58:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 13:58:59,517 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 13:58:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 13:58:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2021-12-21 13:58:59,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2021-12-21 13:58:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 13:58:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 13:58:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 13:58:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2021-12-21 13:58:59,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2021-12-21 13:58:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 13:58:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 13:58:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2021-12-21 13:58:59,518 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2021-12-21 13:58:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:58:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 13:58:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-12-21 13:58:59,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-12-21 13:58:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-12-21 13:58:59,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-12-21 13:58:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-21 13:58:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-21 13:58:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-21 13:58:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-21 13:58:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-12-21 13:58:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-12-21 13:58:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:58:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:58:59,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:58:59,714 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:58:59,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:58:59,786 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:58:59,787 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2021-12-21 13:58:59,808 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:58:59,808 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:58:59,808 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:58:59,808 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:58:59,808 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:58:59,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2021-12-21 13:58:59,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:58:59,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:58:59,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2021-12-21 13:59:00,072 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:00,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-12-21 13:59:00,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:00,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:00,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:00,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:00,073 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:00,074 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:00,074 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-21 13:59:00,074 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2021-12-21 13:59:00,074 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2021-12-21 13:59:00,074 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-12-21 13:59:00,074 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2021-12-21 13:59:02,304 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:59:02,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:59:02,313 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-21 13:59:02,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:59:02 BoogieIcfgContainer [2021-12-21 13:59:02,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:59:02,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:59:02,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:59:02,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:59:02,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:58:58" (1/3) ... [2021-12-21 13:59:02,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3308b2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:59:02, skipping insertion in model container [2021-12-21 13:59:02,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:58:59" (2/3) ... [2021-12-21 13:59:02,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3308b2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:59:02, skipping insertion in model container [2021-12-21 13:59:02,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:59:02" (3/3) ... [2021-12-21 13:59:02,320 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2021-12-21 13:59:02,323 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:59:02,324 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:59:02,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:59:02,365 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 [2021-12-21 13:59:02,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:59:02,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 145 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-21 13:59:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 13:59:02,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:02,401 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:02,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2082055361, now seen corresponding path program 1 times [2021-12-21 13:59:02,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:02,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254855420] [2021-12-21 13:59:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:02,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 13:59:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 13:59:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:59:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:59:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 13:59:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:59:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 13:59:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:59:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:59:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:59:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:59:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:59:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:59:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:59:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-21 13:59:03,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:03,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254855420] [2021-12-21 13:59:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254855420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:59:03,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:59:03,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 13:59:03,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462088720] [2021-12-21 13:59:03,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:59:03,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:59:03,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:59:03,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:59:03,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 13:59:03,828 INFO L87 Difference]: Start difference. First operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 145 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:59:03,884 INFO L93 Difference]: Finished difference Result 450 states and 791 transitions. [2021-12-21 13:59:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:59:03,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2021-12-21 13:59:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:59:03,895 INFO L225 Difference]: With dead ends: 450 [2021-12-21 13:59:03,895 INFO L226 Difference]: Without dead ends: 222 [2021-12-21 13:59:03,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 13:59:03,908 INFO L933 BasicCegarLoop]: 356 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, 356 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 [2021-12-21 13:59:03,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:59:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-21 13:59:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-21 13:59:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 139 states have (on average 1.4820143884892085) internal successors, (206), 141 states have internal predecessors, (206), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-21 13:59:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 352 transitions. [2021-12-21 13:59:03,967 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 352 transitions. Word has length 96 [2021-12-21 13:59:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:59:03,967 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 352 transitions. [2021-12-21 13:59:03,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 352 transitions. [2021-12-21 13:59:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 13:59:03,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:03,973 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:03,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:59:03,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1601368773, now seen corresponding path program 1 times [2021-12-21 13:59:03,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:03,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652366523] [2021-12-21 13:59:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:03,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 13:59:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 13:59:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 13:59:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:59:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 13:59:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:59:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 13:59:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:59:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:59:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:59:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:59:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:59:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:59:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:59:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-21 13:59:06,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652366523] [2021-12-21 13:59:06,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652366523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:59:06,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:59:06,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:59:06,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614934009] [2021-12-21 13:59:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:59:06,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:59:06,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:59:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:59:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:59:06,404 INFO L87 Difference]: Start difference. First operand 222 states and 352 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:59:06,461 INFO L93 Difference]: Finished difference Result 442 states and 702 transitions. [2021-12-21 13:59:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:59:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2021-12-21 13:59:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:59:06,466 INFO L225 Difference]: With dead ends: 442 [2021-12-21 13:59:06,466 INFO L226 Difference]: Without dead ends: 229 [2021-12-21 13:59:06,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:59:06,469 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 8 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:59:06,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 694 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:59:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-21 13:59:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2021-12-21 13:59:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 142 states have internal predecessors, (207), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-21 13:59:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 353 transitions. [2021-12-21 13:59:06,490 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 353 transitions. Word has length 96 [2021-12-21 13:59:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:59:06,490 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 353 transitions. [2021-12-21 13:59:06,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 353 transitions. [2021-12-21 13:59:06,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 13:59:06,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:06,495 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:06,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:59:06,496 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:06,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:06,496 INFO L85 PathProgramCache]: Analyzing trace with hash -36735240, now seen corresponding path program 1 times [2021-12-21 13:59:06,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:06,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894222627] [2021-12-21 13:59:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:06,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 13:59:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-21 13:59:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 13:59:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:59:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:59:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 13:59:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 13:59:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:59:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:59:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:59:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:59:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:59:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:59:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:59:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-21 13:59:07,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:07,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894222627] [2021-12-21 13:59:07,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894222627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:59:07,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:59:07,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:59:07,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880158331] [2021-12-21 13:59:07,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:59:07,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:59:07,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:59:07,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:59:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:59:07,624 INFO L87 Difference]: Start difference. First operand 223 states and 353 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:59:07,657 INFO L93 Difference]: Finished difference Result 447 states and 709 transitions. [2021-12-21 13:59:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:59:07,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 101 [2021-12-21 13:59:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:59:07,661 INFO L225 Difference]: With dead ends: 447 [2021-12-21 13:59:07,661 INFO L226 Difference]: Without dead ends: 227 [2021-12-21 13:59:07,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:59:07,665 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 2 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:59:07,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 691 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:59:07,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-21 13:59:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2021-12-21 13:59:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 142 states have (on average 1.471830985915493) internal successors, (209), 144 states have internal predecessors, (209), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-21 13:59:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 355 transitions. [2021-12-21 13:59:07,741 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 355 transitions. Word has length 101 [2021-12-21 13:59:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:59:07,742 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 355 transitions. [2021-12-21 13:59:07,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 13:59:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 355 transitions. [2021-12-21 13:59:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-21 13:59:07,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:07,743 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:07,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:59:07,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1158934788, now seen corresponding path program 1 times [2021-12-21 13:59:07,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:07,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589412480] [2021-12-21 13:59:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:07,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:59:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:59:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:59:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:59:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 13:59:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 13:59:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:59:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:59:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:59:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:59:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:59:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:59:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:59:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:59:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-12-21 13:59:08,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:08,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589412480] [2021-12-21 13:59:08,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589412480] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:59:08,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002283461] [2021-12-21 13:59:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:08,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:59:08,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:59:08,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:59:08,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:59:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:13,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 16939 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:59:13,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:59:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-12-21 13:59:13,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:59:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-12-21 13:59:13,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002283461] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:59:13,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:59:13,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-21 13:59:13,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152803326] [2021-12-21 13:59:13,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:59:13,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:59:13,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:59:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:59:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:59:13,941 INFO L87 Difference]: Start difference. First operand 225 states and 355 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-21 13:59:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:59:13,977 INFO L93 Difference]: Finished difference Result 456 states and 720 transitions. [2021-12-21 13:59:13,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:59:13,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 105 [2021-12-21 13:59:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:59:13,984 INFO L225 Difference]: With dead ends: 456 [2021-12-21 13:59:13,984 INFO L226 Difference]: Without dead ends: 234 [2021-12-21 13:59:13,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:59:13,987 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 8 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:59:13,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 691 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:59:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-21 13:59:14,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2021-12-21 13:59:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 150 states have (on average 1.4466666666666668) internal successors, (217), 152 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-21 13:59:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 363 transitions. [2021-12-21 13:59:14,012 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 363 transitions. Word has length 105 [2021-12-21 13:59:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:59:14,015 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 363 transitions. [2021-12-21 13:59:14,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2021-12-21 13:59:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 363 transitions. [2021-12-21 13:59:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 13:59:14,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:59:14,018 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:59:14,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 13:59:14,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:59:14,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:59:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:59:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash -613512956, now seen corresponding path program 2 times [2021-12-21 13:59:14,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:59:14,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669051173] [2021-12-21 13:59:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:59:14,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:59:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 13:59:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:59:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:59:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 13:59:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 13:59:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:59:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:59:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:59:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:59:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:59:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:59:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:59:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:59:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:59:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:59:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-12-21 13:59:16,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:59:16,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669051173] [2021-12-21 13:59:16,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669051173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:59:16,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306989970] [2021-12-21 13:59:16,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 13:59:16,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:59:16,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:59:16,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:59:16,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 14:00:01,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 14:00:01,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 14:00:01,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 16657 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 14:00:01,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:00:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-12-21 14:00:01,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:00:01,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306989970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:00:01,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 14:00:01,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-21 14:00:01,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194238364] [2021-12-21 14:00:01,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:00:01,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:00:01,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:00:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:00:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:00:01,769 INFO L87 Difference]: Start difference. First operand 233 states and 363 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 14:00:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:00:01,825 INFO L93 Difference]: Finished difference Result 443 states and 707 transitions. [2021-12-21 14:00:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 14:00:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2021-12-21 14:00:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:00:01,830 INFO L225 Difference]: With dead ends: 443 [2021-12-21 14:00:01,831 INFO L226 Difference]: Without dead ends: 409 [2021-12-21 14:00:01,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:00:01,832 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 283 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:00:01,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 1222 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:00:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-12-21 14:00:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 408. [2021-12-21 14:00:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 258 states have (on average 1.496124031007752) internal successors, (386), 262 states have internal predecessors, (386), 131 states have call successors, (131), 18 states have call predecessors, (131), 18 states have return successors, (139), 131 states have call predecessors, (139), 131 states have call successors, (139) [2021-12-21 14:00:01,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 656 transitions. [2021-12-21 14:00:01,856 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 656 transitions. Word has length 113 [2021-12-21 14:00:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:00:01,856 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 656 transitions. [2021-12-21 14:00:01,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 14:00:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 656 transitions. [2021-12-21 14:00:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-21 14:00:01,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:00:01,862 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:00:01,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 14:00:02,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:00:02,062 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:00:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:00:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1675025166, now seen corresponding path program 1 times [2021-12-21 14:00:02,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:00:02,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565705435] [2021-12-21 14:00:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:00:02,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:00:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:03,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 14:00:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 14:00:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:00:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:00:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:00:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 14:00:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 14:00:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:00:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:00:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 14:00:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 14:00:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 14:00:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 14:00:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 14:00:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 14:00:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 14:00:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 14:00:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 14:00:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 14:00:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-21 14:00:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 14:00:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-21 14:00:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-21 14:00:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:00:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-21 14:00:04,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:00:04,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565705435] [2021-12-21 14:00:04,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565705435] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 14:00:04,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329177200] [2021-12-21 14:00:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:00:04,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:00:04,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:00:04,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 14:00:04,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process