./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-2.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 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:41:18,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:41:18,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:41:18,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:41:18,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:41:18,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:41:18,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:41:18,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:41:18,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:41:18,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:41:18,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:41:18,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:41:18,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:41:18,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:41:18,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:41:18,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:41:18,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:41:18,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:41:18,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:41:18,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:41:18,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:41:18,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:41:18,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:41:18,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:41:18,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:41:18,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:41:18,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:41:18,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:41:18,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:41:18,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:41:18,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:41:18,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:41:18,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:41:18,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:41:18,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:41:18,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:41:18,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:41:18,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:41:18,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:41:18,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:41:18,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:41:18,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:41:18,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:41:18,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:41:18,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:41:18,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:41:18,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:41:18,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:41:18,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:41:18,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:41:18,876 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:41:18,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:41:18,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:41:18,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:41:18,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:41:18,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:41:18,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:41:18,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:41:18,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:41:18,878 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:41:18,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:41:18,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:41:18,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:41:18,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:41:18,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:41:18,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:41:18,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:41:18,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:41:18,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:41:18,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:41:18,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:41:18,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:41:18,882 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:41:18,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:41:18,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:41:18,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:41:18,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 [2021-12-16 01:41:19,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:41:19,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:41:19,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:41:19,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:41:19,101 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:41:19,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-2.i [2021-12-16 01:41:19,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93fd87ef0/a71ef7b353a648ff9ea125101e919350/FLAG34c4734b7 [2021-12-16 01:41:19,620 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:41:19,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i [2021-12-16 01:41:19,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93fd87ef0/a71ef7b353a648ff9ea125101e919350/FLAG34c4734b7 [2021-12-16 01:41:19,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93fd87ef0/a71ef7b353a648ff9ea125101e919350 [2021-12-16 01:41:19,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:41:19,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:41:19,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:41:19,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:41:19,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:41:19,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:41:19" (1/1) ... [2021-12-16 01:41:19,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1b83fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:19, skipping insertion in model container [2021-12-16 01:41:19,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:41:19" (1/1) ... [2021-12-16 01:41:19,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:41:20,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:41:20,342 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-2.i[34556,34569] [2021-12-16 01:41:20,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:41:20,448 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:41:20,475 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-2.i[34556,34569] [2021-12-16 01:41:20,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:41:20,604 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:41:20,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20 WrapperNode [2021-12-16 01:41:20,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:41:20,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:41:20,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:41:20,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:41:20,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,695 INFO L137 Inliner]: procedures = 252, calls = 270, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 603 [2021-12-16 01:41:20,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:41:20,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:41:20,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:41:20,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:41:20,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:41:20,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:41:20,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:41:20,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:41:20,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (1/1) ... [2021-12-16 01:41:20,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:41:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:41:20,784 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) [2021-12-16 01:41:20,792 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 [2021-12-16 01:41:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 01:41:20,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 01:41:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 01:41:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2021-12-16 01:41:20,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2021-12-16 01:41:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 01:41:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 01:41:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 01:41:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2021-12-16 01:41:20,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2021-12-16 01:41:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 01:41:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 01:41:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2021-12-16 01:41:20,831 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2021-12-16 01:41:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:41:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 01:41:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2021-12-16 01:41:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2021-12-16 01:41:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2021-12-16 01:41:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2021-12-16 01:41:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-16 01:41:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-16 01:41:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-16 01:41:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-16 01:41:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2021-12-16 01:41:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2021-12-16 01:41:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:41:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:41:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:41:21,025 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:41:21,027 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:41:21,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2021-12-16 01:41:21,109 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0 != ~__CS_ret~0 % 256; [2021-12-16 01:41:21,109 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,109 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,109 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2021-12-16 01:41:21,110 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2021-12-16 01:41:21,110 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,110 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,110 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2021-12-16 01:41:21,110 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2021-12-16 01:41:21,321 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,322 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-12-16 01:41:21,322 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,322 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-16 01:41:21,322 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,323 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-16 01:41:21,323 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:21,323 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-16 01:41:21,323 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2021-12-16 01:41:21,323 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2021-12-16 01:41:21,323 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-4: SUMMARY for call __CS_cs(); srcloc: null [2021-12-16 01:41:21,324 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2021-12-16 01:41:21,324 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2021-12-16 01:41:23,628 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:41:23,636 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:41:23,639 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 01:41:23,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:41:23 BoogieIcfgContainer [2021-12-16 01:41:23,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:41:23,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:41:23,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:41:23,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:41:23,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:41:19" (1/3) ... [2021-12-16 01:41:23,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870df85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:41:23, skipping insertion in model container [2021-12-16 01:41:23,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:41:20" (2/3) ... [2021-12-16 01:41:23,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@870df85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:41:23, skipping insertion in model container [2021-12-16 01:41:23,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:41:23" (3/3) ... [2021-12-16 01:41:23,648 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2021-12-16 01:41:23,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:41:23,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:41:23,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:41:23,713 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 [2021-12-16 01:41:23,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:41:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-12-16 01:41:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:41:23,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:41:23,760 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] [2021-12-16 01:41:23,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:41:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:41:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1676979695, now seen corresponding path program 1 times [2021-12-16 01:41:23,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:41:23,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883380245] [2021-12-16 01:41:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:41:23,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:41:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 01:41:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:41:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:41:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 01:41:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:41:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 01:41:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 01:41:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 01:41:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 01:41:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 01:41:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 01:41:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 01:41:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 01:41:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 01:41:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-16 01:41:31,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:41:31,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883380245] [2021-12-16 01:41:31,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883380245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:41:31,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:41:31,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 01:41:31,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376931696] [2021-12-16 01:41:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:41:31,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 01:41:31,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:41:31,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 01:41:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 01:41:31,583 INFO L87 Difference]: Start difference. First operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:41:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:41:31,634 INFO L93 Difference]: Finished difference Result 440 states and 775 transitions. [2021-12-16 01:41:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 01:41:31,637 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2021-12-16 01:41:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:41:31,647 INFO L225 Difference]: With dead ends: 440 [2021-12-16 01:41:31,647 INFO L226 Difference]: Without dead ends: 218 [2021-12-16 01:41:31,658 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 [2021-12-16 01:41:31,661 INFO L933 BasicCegarLoop]: 352 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, 352 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 [2021-12-16 01:41:31,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:41:31,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-12-16 01:41:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-12-16 01:41:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 133 states have (on average 1.4887218045112782) internal successors, (198), 135 states have internal predecessors, (198), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-12-16 01:41:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 348 transitions. [2021-12-16 01:41:31,725 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 348 transitions. Word has length 94 [2021-12-16 01:41:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:41:31,725 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 348 transitions. [2021-12-16 01:41:31,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:41:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 348 transitions. [2021-12-16 01:41:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-16 01:41:31,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:41:31,731 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] [2021-12-16 01:41:31,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:41:31,732 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:41:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:41:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1062498259, now seen corresponding path program 1 times [2021-12-16 01:41:31,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:41:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134323537] [2021-12-16 01:41:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:41:31,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:41:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 01:41:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:41:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:41:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 01:41:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:41:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 01:41:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 01:41:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 01:41:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 01:41:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 01:41:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 01:41:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 01:41:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 01:41:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 01:41:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-16 01:41:42,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:41:42,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134323537] [2021-12-16 01:41:42,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134323537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:41:42,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:41:42,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:41:42,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999306778] [2021-12-16 01:41:42,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:41:42,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:41:42,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:41:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:41:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:41:42,887 INFO L87 Difference]: Start difference. First operand 218 states and 348 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-16 01:41:42,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:41:42,976 INFO L93 Difference]: Finished difference Result 432 states and 699 transitions. [2021-12-16 01:41:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:41:42,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 94 [2021-12-16 01:41:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:41:42,987 INFO L225 Difference]: With dead ends: 432 [2021-12-16 01:41:42,987 INFO L226 Difference]: Without dead ends: 398 [2021-12-16 01:41:42,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:41:42,989 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 307 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1225 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 [2021-12-16 01:41:42,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:41:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-16 01:41:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2021-12-16 01:41:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 135 states have call successors, (135), 18 states have call predecessors, (135), 18 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2021-12-16 01:41:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 648 transitions. [2021-12-16 01:41:43,033 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 648 transitions. Word has length 94 [2021-12-16 01:41:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:41:43,033 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 648 transitions. [2021-12-16 01:41:43,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-16 01:41:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 648 transitions. [2021-12-16 01:41:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-16 01:41:43,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:41:43,039 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:41:43,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:41:43,039 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:41:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:41:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash -800885455, now seen corresponding path program 1 times [2021-12-16 01:41:43,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:41:43,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331334213] [2021-12-16 01:41:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:41:43,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:41:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 01:41:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:41:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:41:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:41:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:41:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:41:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:41:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:41:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 01:41:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:41:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 01:41:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 01:41:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:41:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:41:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 01:41:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:41:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 01:41:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 01:41:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 01:41:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 01:41:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:41:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 01:41:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-16 01:41:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-16 01:41:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-16 01:41:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-16 01:41:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 01:41:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:41:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-16 01:41:52,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:41:52,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331334213] [2021-12-16 01:41:52,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331334213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:41:52,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:41:52,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 01:41:52,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619549317] [2021-12-16 01:41:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:41:52,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:41:52,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:41:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:41:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:41:52,540 INFO L87 Difference]: Start difference. First operand 397 states and 648 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-16 01:41:54,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 01:41:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:41:56,388 INFO L93 Difference]: Finished difference Result 1402 states and 2348 transitions. [2021-12-16 01:41:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 01:41:56,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2021-12-16 01:41:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:41:56,399 INFO L225 Difference]: With dead ends: 1402 [2021-12-16 01:41:56,399 INFO L226 Difference]: Without dead ends: 1014 [2021-12-16 01:41:56,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-12-16 01:41:56,403 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 708 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:41:56,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1872 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1203 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-12-16 01:41:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-12-16 01:41:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 893. [2021-12-16 01:41:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 542 states have (on average 1.529520295202952) internal successors, (829), 559 states have internal predecessors, (829), 307 states have call successors, (307), 36 states have call predecessors, (307), 43 states have return successors, (350), 307 states have call predecessors, (350), 307 states have call successors, (350) [2021-12-16 01:41:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1486 transitions. [2021-12-16 01:41:56,495 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1486 transitions. Word has length 183 [2021-12-16 01:41:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:41:56,496 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 1486 transitions. [2021-12-16 01:41:56,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-16 01:41:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1486 transitions. [2021-12-16 01:41:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-16 01:41:56,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:41:56,506 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:41:56,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:41:56,506 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:41:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:41:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -856649123, now seen corresponding path program 1 times [2021-12-16 01:41:56,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:41:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314392523] [2021-12-16 01:41:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:41:56,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:42:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:42:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:42:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:42:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:42:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:42:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:42:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:42:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:42:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 01:42:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:42:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 01:42:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 01:42:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 01:42:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:42:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 01:42:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:42:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 01:42:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 01:42:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 01:42:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 01:42:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 01:42:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 01:42:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-16 01:42:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-16 01:42:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-16 01:42:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-16 01:42:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 01:42:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:42:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-16 01:42:05,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:42:05,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314392523] [2021-12-16 01:42:05,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314392523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:42:05,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:42:05,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 01:42:05,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046383377] [2021-12-16 01:42:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:42:05,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:42:05,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:42:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:42:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:42:05,490 INFO L87 Difference]: Start difference. First operand 893 states and 1486 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-16 01:42:07,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 01:42:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:42:09,257 INFO L93 Difference]: Finished difference Result 1883 states and 3132 transitions. [2021-12-16 01:42:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 01:42:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2021-12-16 01:42:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:42:09,265 INFO L225 Difference]: With dead ends: 1883 [2021-12-16 01:42:09,265 INFO L226 Difference]: Without dead ends: 959 [2021-12-16 01:42:09,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-12-16 01:42:09,271 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 855 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 452 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:42:09,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 1567 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-12-16 01:42:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-12-16 01:42:09,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 875. [2021-12-16 01:42:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 532 states have (on average 1.5244360902255638) internal successors, (811), 549 states have internal predecessors, (811), 299 states have call successors, (299), 35 states have call predecessors, (299), 43 states have return successors, (335), 300 states have call predecessors, (335), 299 states have call successors, (335) [2021-12-16 01:42:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1445 transitions. [2021-12-16 01:42:09,332 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1445 transitions. Word has length 183 [2021-12-16 01:42:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:42:09,334 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1445 transitions. [2021-12-16 01:42:09,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-16 01:42:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1445 transitions. [2021-12-16 01:42:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-16 01:42:09,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:42:09,343 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:42:09,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:42:09,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:42:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:42:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1909419641, now seen corresponding path program 1 times [2021-12-16 01:42:09,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:42:09,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461038890] [2021-12-16 01:42:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:42:09,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:42:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat