./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 35987657 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-?-3598765 [2022-07-21 06:20:23,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:20:23,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:20:23,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:20:23,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:20:23,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:20:23,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:20:23,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:20:23,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:20:23,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:20:23,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:20:23,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:20:23,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:20:23,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:20:23,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:20:23,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:20:23,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:20:23,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:20:23,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:20:23,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:20:23,781 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:20:23,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:20:23,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:20:23,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:20:23,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:20:23,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:20:23,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:20:23,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:20:23,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:20:23,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:20:23,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:20:23,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:20:23,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:20:23,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:20:23,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:20:23,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:20:23,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:20:23,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:20:23,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:20:23,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:20:23,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:20:23,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:20:23,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:20:23,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:20:23,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:20:23,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:20:23,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:20:23,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:20:23,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:20:23,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:20:23,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:20:23,851 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:20:23,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:20:23,852 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:20:23,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:20:23,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:20:23,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:20:23,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:20:23,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:20:23,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:20:23,854 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:20:23,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:20:23,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:20:23,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:20:23,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:20:23,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:20:23,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:20:23,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:20:23,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:20:23,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:20:23,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:20:23,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:20:23,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:20:23,857 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:20:23,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:20:23,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:20:23,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2022-07-21 06:20:24,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:20:24,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:20:24,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:20:24,253 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:20:24,254 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:20:24,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2022-07-21 06:20:24,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/facdca7aa/c8edd527f2e44d93873ba2cfec8316cf/FLAG2dc42f967 [2022-07-21 06:20:24,836 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:20:24,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2022-07-21 06:20:24,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/facdca7aa/c8edd527f2e44d93873ba2cfec8316cf/FLAG2dc42f967 [2022-07-21 06:20:25,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/facdca7aa/c8edd527f2e44d93873ba2cfec8316cf [2022-07-21 06:20:25,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:20:25,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:20:25,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:20:25,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:20:25,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:20:25,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:25,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152ee920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25, skipping insertion in model container [2022-07-21 06:20:25,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:25,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:20:25,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:20:25,603 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] [2022-07-21 06:20:25,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:20:25,796 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:20:25,836 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] [2022-07-21 06:20:25,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:20:25,958 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:20:25,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25 WrapperNode [2022-07-21 06:20:25,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:20:25,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:20:25,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:20:25,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:20:25,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,073 INFO L137 Inliner]: procedures = 254, calls = 276, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 640 [2022-07-21 06:20:26,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:20:26,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:20:26,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:20:26,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:20:26,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:20:26,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:20:26,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:20:26,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:20:26,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (1/1) ... [2022-07-21 06:20:26,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:20:26,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:20:26,182 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) [2022-07-21 06:20:26,186 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 [2022-07-21 06:20:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 06:20:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 06:20:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 06:20:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-07-21 06:20:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-07-21 06:20:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 06:20:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 06:20:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 06:20:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-07-21 06:20:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-07-21 06:20:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 06:20:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 06:20:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-07-21 06:20:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-07-21 06:20:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:20:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 06:20:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-07-21 06:20:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-07-21 06:20:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-07-21 06:20:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-07-21 06:20:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-21 06:20:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-21 06:20:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-21 06:20:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-21 06:20:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-07-21 06:20:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-07-21 06:20:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:20:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:20:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:20:26,463 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:20:26,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:20:26,562 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,563 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-07-21 06:20:26,588 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,588 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2022-07-21 06:20:26,589 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2022-07-21 06:20:26,589 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,589 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,589 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2022-07-21 06:20:26,590 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0 != ~__CS_ret~0 % 256; [2022-07-21 06:20:26,590 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,590 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2022-07-21 06:20:26,822 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,823 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-21 06:20:26,823 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,823 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-21 06:20:26,823 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,823 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-21 06:20:26,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:26,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-21 06:20:26,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-21 06:20:26,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2022-07-21 06:20:26,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2022-07-21 06:20:26,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-21 06:20:26,825 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2022-07-21 06:20:29,131 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:20:29,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:20:29,139 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-21 06:20:29,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:20:29 BoogieIcfgContainer [2022-07-21 06:20:29,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:20:29,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:20:29,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:20:29,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:20:29,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:20:25" (1/3) ... [2022-07-21 06:20:29,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e256dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:20:29, skipping insertion in model container [2022-07-21 06:20:29,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:20:25" (2/3) ... [2022-07-21 06:20:29,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e256dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:20:29, skipping insertion in model container [2022-07-21 06:20:29,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:20:29" (3/3) ... [2022-07-21 06:20:29,148 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2022-07-21 06:20:29,165 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:20:29,166 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 06:20:29,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:20:29,219 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48cad6d4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78253ee0 [2022-07-21 06:20:29,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 06:20:29,224 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) [2022-07-21 06:20:29,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 06:20:29,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:20:29,249 INFO L195 NwaCegarLoop]: 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] [2022-07-21 06:20:29,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:20:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:20:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2082055361, now seen corresponding path program 1 times [2022-07-21 06:20:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:20:29,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523059371] [2022-07-21 06:20:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:20:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:20:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 06:20:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 06:20:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 06:20:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 06:20:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 06:20:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 06:20:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 06:20:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 06:20:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 06:20:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 06:20:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 06:20:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 06:20:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 06:20:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 06:20:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 06:20:31,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:20:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523059371] [2022-07-21 06:20:31,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523059371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:20:31,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:20:31,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 06:20:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939046020] [2022-07-21 06:20:31,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:20:31,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 06:20:31,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:20:31,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 06:20:31,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 06:20:31,265 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) [2022-07-21 06:20:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:20:31,322 INFO L93 Difference]: Finished difference Result 450 states and 791 transitions. [2022-07-21 06:20:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 06:20:31,325 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 [2022-07-21 06:20:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:20:31,343 INFO L225 Difference]: With dead ends: 450 [2022-07-21 06:20:31,343 INFO L226 Difference]: Without dead ends: 222 [2022-07-21 06:20:31,353 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:20:31,357 INFO L413 NwaCegarLoop]: 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 [2022-07-21 06:20:31,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:20:31,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-21 06:20:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-07-21 06:20:31,417 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) [2022-07-21 06:20:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 352 transitions. [2022-07-21 06:20:31,422 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 352 transitions. Word has length 96 [2022-07-21 06:20:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:20:31,423 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 352 transitions. [2022-07-21 06:20:31,423 INFO L496 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) [2022-07-21 06:20:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 352 transitions. [2022-07-21 06:20:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 06:20:31,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:20:31,431 INFO L195 NwaCegarLoop]: 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] [2022-07-21 06:20:31,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:20:31,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:20:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:20:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1601368773, now seen corresponding path program 1 times [2022-07-21 06:20:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:20:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586742946] [2022-07-21 06:20:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:20:31,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:20:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 06:20:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 06:20:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 06:20:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 06:20:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 06:20:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 06:20:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 06:20:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 06:20:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 06:20:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 06:20:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 06:20:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 06:20:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 06:20:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 06:20:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 06:20:34,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:20:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586742946] [2022-07-21 06:20:34,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586742946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:20:34,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:20:34,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:20:34,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131664360] [2022-07-21 06:20:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:20:34,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:20:34,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:20:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:20:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:20:34,534 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) [2022-07-21 06:20:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:20:34,617 INFO L93 Difference]: Finished difference Result 442 states and 702 transitions. [2022-07-21 06:20:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:20:34,618 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 [2022-07-21 06:20:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:20:34,620 INFO L225 Difference]: With dead ends: 442 [2022-07-21 06:20:34,620 INFO L226 Difference]: Without dead ends: 229 [2022-07-21 06:20:34,622 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:20:34,623 INFO L413 NwaCegarLoop]: 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 [2022-07-21 06:20:34,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 694 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:20:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-21 06:20:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2022-07-21 06:20:34,646 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) [2022-07-21 06:20:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 353 transitions. [2022-07-21 06:20:34,649 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 353 transitions. Word has length 96 [2022-07-21 06:20:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:20:34,650 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 353 transitions. [2022-07-21 06:20:34,650 INFO L496 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) [2022-07-21 06:20:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 353 transitions. [2022-07-21 06:20:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 06:20:34,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:20:34,655 INFO L195 NwaCegarLoop]: 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] [2022-07-21 06:20:34,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:20:34,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:20:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:20:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash -36735240, now seen corresponding path program 1 times [2022-07-21 06:20:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:20:34,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91791079] [2022-07-21 06:20:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:20:34,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:20:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 06:20:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:20:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 06:20:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 06:20:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:20:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 06:20:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:20:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 06:20:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 06:20:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 06:20:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 06:20:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 06:20:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 06:20:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 06:20:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 06:20:36,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:20:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91791079] [2022-07-21 06:20:36,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91791079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:20:36,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:20:36,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:20:36,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702637956] [2022-07-21 06:20:36,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:20:36,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:20:36,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:20:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:20:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:20:36,142 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) [2022-07-21 06:20:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:20:36,219 INFO L93 Difference]: Finished difference Result 447 states and 709 transitions. [2022-07-21 06:20:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:20:36,220 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 [2022-07-21 06:20:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:20:36,223 INFO L225 Difference]: With dead ends: 447 [2022-07-21 06:20:36,223 INFO L226 Difference]: Without dead ends: 227 [2022-07-21 06:20:36,225 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:20:36,225 INFO L413 NwaCegarLoop]: 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 [2022-07-21 06:20:36,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 691 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:20:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-21 06:20:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-07-21 06:20:36,243 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) [2022-07-21 06:20:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 355 transitions. [2022-07-21 06:20:36,245 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 355 transitions. Word has length 101 [2022-07-21 06:20:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:20:36,246 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 355 transitions. [2022-07-21 06:20:36,246 INFO L496 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) [2022-07-21 06:20:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 355 transitions. [2022-07-21 06:20:36,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 06:20:36,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:20:36,249 INFO L195 NwaCegarLoop]: 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] [2022-07-21 06:20:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:20:36,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:20:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:20:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1158934788, now seen corresponding path program 1 times [2022-07-21 06:20:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:20:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818408734] [2022-07-21 06:20:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:20:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:20:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 06:20:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 06:20:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 06:20:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 06:20:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 06:20:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 06:20:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 06:20:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 06:20:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 06:20:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 06:20:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 06:20:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 06:20:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 06:20:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 06:20:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-07-21 06:20:37,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:20:37,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818408734] [2022-07-21 06:20:37,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818408734] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:20:37,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315832590] [2022-07-21 06:20:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:20:37,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:20:37,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:20:37,687 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) [2022-07-21 06:20:37,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 06:20:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:44,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 16939 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 06:20:44,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:20:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-07-21 06:20:44,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 06:20:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-07-21 06:20:44,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315832590] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 06:20:44,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 06:20:44,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-21 06:20:44,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714466910] [2022-07-21 06:20:44,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 06:20:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:20:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:20:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:20:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:20:44,249 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) [2022-07-21 06:20:44,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:20:44,314 INFO L93 Difference]: Finished difference Result 456 states and 720 transitions. [2022-07-21 06:20:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 06:20:44,315 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 [2022-07-21 06:20:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:20:44,317 INFO L225 Difference]: With dead ends: 456 [2022-07-21 06:20:44,319 INFO L226 Difference]: Without dead ends: 234 [2022-07-21 06:20:44,321 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:20:44,322 INFO L413 NwaCegarLoop]: 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 [2022-07-21 06:20:44,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 691 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:20:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-21 06:20:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-07-21 06:20:44,345 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) [2022-07-21 06:20:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 363 transitions. [2022-07-21 06:20:44,347 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 363 transitions. Word has length 105 [2022-07-21 06:20:44,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:20:44,348 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 363 transitions. [2022-07-21 06:20:44,348 INFO L496 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) [2022-07-21 06:20:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 363 transitions. [2022-07-21 06:20:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 06:20:44,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:20:44,351 INFO L195 NwaCegarLoop]: 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] [2022-07-21 06:20:44,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 06:20:44,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:20:44,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:20:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:20:44,580 INFO L85 PathProgramCache]: Analyzing trace with hash -613512956, now seen corresponding path program 2 times [2022-07-21 06:20:44,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:20:44,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924001403] [2022-07-21 06:20:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:20:44,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:20:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 06:20:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 06:20:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:20:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 06:20:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:20:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 06:20:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 06:20:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 06:20:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 06:20:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 06:20:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 06:20:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 06:20:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 06:20:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 06:20:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:20:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-21 06:20:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:20:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924001403] [2022-07-21 06:20:47,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924001403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:20:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465395189] [2022-07-21 06:20:47,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 06:20:47,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:20:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:20:47,688 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) [2022-07-21 06:20:47,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 06:21:35,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 06:21:35,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 06:21:35,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 16657 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 06:21:35,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:21:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-07-21 06:21:35,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:21:35,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465395189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:21:35,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:21:35,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-21 06:21:35,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217040559] [2022-07-21 06:21:35,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:21:35,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:21:35,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:21:35,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:21:35,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:21:35,596 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) [2022-07-21 06:21:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:21:35,639 INFO L93 Difference]: Finished difference Result 443 states and 707 transitions. [2022-07-21 06:21:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:21:35,639 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 [2022-07-21 06:21:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:21:35,645 INFO L225 Difference]: With dead ends: 443 [2022-07-21 06:21:35,645 INFO L226 Difference]: Without dead ends: 409 [2022-07-21 06:21:35,646 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:21:35,646 INFO L413 NwaCegarLoop]: 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 [2022-07-21 06:21:35,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1222 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:21:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-21 06:21:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 408. [2022-07-21 06:21:35,690 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) [2022-07-21 06:21:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 656 transitions. [2022-07-21 06:21:35,695 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 656 transitions. Word has length 113 [2022-07-21 06:21:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:21:35,696 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 656 transitions. [2022-07-21 06:21:35,696 INFO L496 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) [2022-07-21 06:21:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 656 transitions. [2022-07-21 06:21:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 06:21:35,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:21:35,707 INFO L195 NwaCegarLoop]: 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] [2022-07-21 06:21:35,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 06:21:35,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:21:35,908 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:21:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:21:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1675025166, now seen corresponding path program 1 times [2022-07-21 06:21:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:21:35,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729360147] [2022-07-21 06:21:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:21:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:21:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 06:21:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 06:21:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 06:21:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 06:21:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 06:21:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 06:21:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 06:21:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 06:21:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 06:21:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 06:21:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 06:21:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 06:21:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-21 06:21:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 06:21:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 06:21:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 06:21:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 06:21:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 06:21:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 06:21:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 06:21:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 06:21:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 06:21:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-21 06:21:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:21:38,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729360147] [2022-07-21 06:21:38,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729360147] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:21:38,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895858883] [2022-07-21 06:21:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:21:38,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:21:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:21:38,548 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) [2022-07-21 06:21:38,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 06:21:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:45,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 17357 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 06:21:45,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:21:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-07-21 06:21:45,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 06:21:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-07-21 06:21:45,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895858883] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 06:21:45,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 06:21:45,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2022-07-21 06:21:45,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922890027] [2022-07-21 06:21:45,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 06:21:45,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 06:21:45,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:21:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 06:21:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 06:21:45,830 INFO L87 Difference]: Start difference. First operand 408 states and 656 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 9 states have internal predecessors, (118), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-21 06:21:48,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:21:50,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:21:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:21:50,670 INFO L93 Difference]: Finished difference Result 848 states and 1356 transitions. [2022-07-21 06:21:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 06:21:50,671 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 9 states have internal predecessors, (118), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 202 [2022-07-21 06:21:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:21:50,675 INFO L225 Difference]: With dead ends: 848 [2022-07-21 06:21:50,675 INFO L226 Difference]: Without dead ends: 443 [2022-07-21 06:21:50,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-07-21 06:21:50,681 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 121 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 270 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-21 06:21:50,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1702 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 615 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-07-21 06:21:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-21 06:21:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 437. [2022-07-21 06:21:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 285 states have (on average 1.456140350877193) internal successors, (415), 291 states have internal predecessors, (415), 131 states have call successors, (131), 18 states have call predecessors, (131), 20 states have return successors, (143), 131 states have call predecessors, (143), 131 states have call successors, (143) [2022-07-21 06:21:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 689 transitions. [2022-07-21 06:21:50,706 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 689 transitions. Word has length 202 [2022-07-21 06:21:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:21:50,706 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 689 transitions. [2022-07-21 06:21:50,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 9 states have internal predecessors, (118), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-21 06:21:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 689 transitions. [2022-07-21 06:21:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-21 06:21:50,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:21:50,711 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:21:50,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 06:21:50,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:21:50,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:21:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:21:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash 75770481, now seen corresponding path program 2 times [2022-07-21 06:21:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:21:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289940199] [2022-07-21 06:21:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:21:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:21:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:21:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 06:21:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 06:21:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 06:21:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 06:21:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 06:21:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 06:21:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 06:21:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:21:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 06:21:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 06:21:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:21:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 06:21:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 06:21:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 06:21:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 06:21:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 06:21:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 06:21:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 06:21:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 06:21:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 06:21:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 06:21:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 06:21:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:21:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-21 06:21:59,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:21:59,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289940199] [2022-07-21 06:21:59,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289940199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:21:59,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:21:59,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 06:21:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558784223] [2022-07-21 06:21:59,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:21:59,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 06:21:59,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:21:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 06:21:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 06:21:59,578 INFO L87 Difference]: Start difference. First operand 437 states and 689 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-07-21 06:22:01,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:22:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:22:03,437 INFO L93 Difference]: Finished difference Result 1418 states and 2349 transitions. [2022-07-21 06:22:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 06:22:03,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 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 227 [2022-07-21 06:22:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:22:03,456 INFO L225 Difference]: With dead ends: 1418 [2022-07-21 06:22:03,457 INFO L226 Difference]: Without dead ends: 1034 [2022-07-21 06:22:03,461 INFO L412 NwaCegarLoop]: 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 [2022-07-21 06:22:03,463 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 891 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 740 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:22:03,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1565 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 1147 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-07-21 06:22:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-07-21 06:22:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 917. [2022-07-21 06:22:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 576 states have (on average 1.5) internal successors, (864), 593 states have internal predecessors, (864), 297 states have call successors, (297), 36 states have call predecessors, (297), 43 states have return successors, (340), 297 states have call predecessors, (340), 297 states have call successors, (340) [2022-07-21 06:22:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1501 transitions. [2022-07-21 06:22:03,556 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1501 transitions. Word has length 227 [2022-07-21 06:22:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:22:03,557 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1501 transitions. [2022-07-21 06:22:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-07-21 06:22:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1501 transitions. [2022-07-21 06:22:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-21 06:22:03,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:22:03,567 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:22:03,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:22:03,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:22:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:22:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1416987875, now seen corresponding path program 1 times [2022-07-21 06:22:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:22:03,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720523489] [2022-07-21 06:22:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:22:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:22:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 06:22:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 06:22:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 06:22:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 06:22:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 06:22:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 06:22:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 06:22:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 06:22:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 06:22:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 06:22:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:22:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 06:22:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 06:22:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 06:22:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 06:22:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 06:22:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 06:22:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 06:22:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 06:22:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 06:22:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 06:22:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 06:22:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-21 06:22:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:22:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720523489] [2022-07-21 06:22:11,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720523489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:22:11,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:22:11,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 06:22:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507395519] [2022-07-21 06:22:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:22:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 06:22:11,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:22:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 06:22:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 06:22:11,995 INFO L87 Difference]: Start difference. First operand 917 states and 1501 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-07-21 06:22:14,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:22:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:22:15,832 INFO L93 Difference]: Finished difference Result 1883 states and 3107 transitions. [2022-07-21 06:22:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 06:22:15,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 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 227 [2022-07-21 06:22:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:22:15,839 INFO L225 Difference]: With dead ends: 1883 [2022-07-21 06:22:15,840 INFO L226 Difference]: Without dead ends: 981 [2022-07-21 06:22:15,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-21 06:22:15,846 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 863 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 874 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:22:15,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1676 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 958 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 06:22:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-21 06:22:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 899. [2022-07-21 06:22:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 566 states have (on average 1.4946996466431095) internal successors, (846), 583 states have internal predecessors, (846), 289 states have call successors, (289), 35 states have call predecessors, (289), 43 states have return successors, (325), 290 states have call predecessors, (325), 289 states have call successors, (325) [2022-07-21 06:22:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1460 transitions. [2022-07-21 06:22:15,901 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1460 transitions. Word has length 227 [2022-07-21 06:22:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:22:15,902 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1460 transitions. [2022-07-21 06:22:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-07-21 06:22:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1460 transitions. [2022-07-21 06:22:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-21 06:22:15,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:22:15,910 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:22:15,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 06:22:15,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:22:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:22:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash -442184249, now seen corresponding path program 1 times [2022-07-21 06:22:15,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:22:15,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800866291] [2022-07-21 06:22:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:22:15,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:22:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 06:22:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 06:22:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 06:22:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 06:22:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 06:22:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 06:22:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 06:22:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 06:22:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 06:22:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 06:22:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:22:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-21 06:22:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 06:22:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 06:22:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 06:22:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 06:22:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 06:22:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 06:22:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 06:22:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 06:22:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 06:22:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 06:22:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-21 06:22:21,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:22:21,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800866291] [2022-07-21 06:22:21,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800866291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:22:21,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:22:21,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 06:22:21,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497536793] [2022-07-21 06:22:21,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:22:21,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 06:22:21,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:22:21,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 06:22:21,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:22:21,223 INFO L87 Difference]: Start difference. First operand 899 states and 1460 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 06:22:23,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:22:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:22:24,723 INFO L93 Difference]: Finished difference Result 1385 states and 2211 transitions. [2022-07-21 06:22:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:22:24,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 227 [2022-07-21 06:22:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:22:24,729 INFO L225 Difference]: With dead ends: 1385 [2022-07-21 06:22:24,729 INFO L226 Difference]: Without dead ends: 834 [2022-07-21 06:22:24,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:22:24,734 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 406 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 195 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:22:24,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1457 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 955 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 06:22:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-07-21 06:22:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 724. [2022-07-21 06:22:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 466 states have (on average 1.44206008583691) internal successors, (672), 479 states have internal predecessors, (672), 214 states have call successors, (214), 35 states have call predecessors, (214), 43 states have return successors, (244), 215 states have call predecessors, (244), 214 states have call successors, (244) [2022-07-21 06:22:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1130 transitions. [2022-07-21 06:22:24,777 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1130 transitions. Word has length 227 [2022-07-21 06:22:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:22:24,777 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1130 transitions. [2022-07-21 06:22:24,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 06:22:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1130 transitions. [2022-07-21 06:22:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 06:22:24,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:22:24,784 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:22:24,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 06:22:24,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:22:24,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:22:24,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2180701, now seen corresponding path program 1 times [2022-07-21 06:22:24,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:22:24,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048076955] [2022-07-21 06:22:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:22:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:22:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 06:22:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 06:22:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 06:22:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 06:22:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 06:22:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:22:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:33,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:22:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 06:22:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 06:22:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:22:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 06:22:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 06:22:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 06:22:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-21 06:22:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 06:22:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 06:22:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 06:22:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 06:22:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 06:22:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 06:22:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 06:22:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 06:22:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 06:22:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 06:22:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-07-21 06:22:34,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:22:34,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048076955] [2022-07-21 06:22:34,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048076955] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:22:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454044638] [2022-07-21 06:22:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:22:34,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:22:34,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:22:34,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:22:34,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 06:22:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:22:43,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 17762 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 06:22:43,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:22:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 349 proven. 6 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-07-21 06:22:43,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 06:22:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2022-07-21 06:22:43,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454044638] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 06:22:43,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 06:22:43,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 22 [2022-07-21 06:22:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644021508] [2022-07-21 06:22:43,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 06:22:43,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 06:22:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:22:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 06:22:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-07-21 06:22:43,946 INFO L87 Difference]: Start difference. First operand 724 states and 1130 transitions. Second operand has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 17 states have internal predecessors, (120), 7 states have call successors, (54), 7 states have call predecessors, (54), 10 states have return successors, (55), 10 states have call predecessors, (55), 7 states have call successors, (55) [2022-07-21 06:22:45,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:22:48,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:23:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:23:07,772 INFO L93 Difference]: Finished difference Result 4970 states and 8416 transitions. [2022-07-21 06:23:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-07-21 06:23:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 17 states have internal predecessors, (120), 7 states have call successors, (54), 7 states have call predecessors, (54), 10 states have return successors, (55), 10 states have call predecessors, (55), 7 states have call successors, (55) Word has length 231 [2022-07-21 06:23:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:23:07,802 INFO L225 Difference]: With dead ends: 4970 [2022-07-21 06:23:07,802 INFO L226 Difference]: Without dead ends: 4288 [2022-07-21 06:23:07,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 563 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16877 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4711, Invalid=35089, Unknown=0, NotChecked=0, Total=39800 [2022-07-21 06:23:07,820 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 5370 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 13539 mSolverCounterSat, 8673 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 22214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8673 IncrementalHoareTripleChecker+Valid, 13539 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-07-21 06:23:07,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5390 Valid, 3793 Invalid, 22214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8673 Valid, 13539 Invalid, 2 Unknown, 0 Unchecked, 17.8s Time] [2022-07-21 06:23:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2022-07-21 06:23:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 3645. [2022-07-21 06:23:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2319 states have (on average 1.2919361793876671) internal successors, (2996), 2260 states have internal predecessors, (2996), 1099 states have call successors, (1099), 141 states have call predecessors, (1099), 226 states have return successors, (1694), 1247 states have call predecessors, (1694), 1099 states have call successors, (1694) [2022-07-21 06:23:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5789 transitions. [2022-07-21 06:23:08,129 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5789 transitions. Word has length 231 [2022-07-21 06:23:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:23:08,129 INFO L495 AbstractCegarLoop]: Abstraction has 3645 states and 5789 transitions. [2022-07-21 06:23:08,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 17 states have internal predecessors, (120), 7 states have call successors, (54), 7 states have call predecessors, (54), 10 states have return successors, (55), 10 states have call predecessors, (55), 7 states have call successors, (55) [2022-07-21 06:23:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5789 transitions. [2022-07-21 06:23:08,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 06:23:08,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:23:08,160 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:23:08,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 06:23:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:23:08,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:23:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:23:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -394328382, now seen corresponding path program 1 times [2022-07-21 06:23:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:23:08,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145796955] [2022-07-21 06:23:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:23:08,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:23:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 06:23:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 06:23:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:23:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 06:23:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:23:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 06:23:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 06:23:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:23:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:23:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:23:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:23:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 06:23:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 06:23:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 06:23:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 06:23:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 06:23:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 06:23:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-21 06:23:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 06:23:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 06:23:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 06:23:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-21 06:23:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 06:23:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 06:23:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-21 06:23:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 06:23:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 06:23:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 06:23:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2022-07-21 06:23:17,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:23:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145796955] [2022-07-21 06:23:17,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145796955] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:23:17,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612493765] [2022-07-21 06:23:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:23:17,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:23:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:23:17,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:23:17,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 06:23:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:23:28,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 17831 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-21 06:23:28,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:23:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-07-21 06:23:28,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 06:23:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-21 06:23:28,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612493765] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 06:23:28,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 06:23:28,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2022-07-21 06:23:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855680842] [2022-07-21 06:23:28,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 06:23:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 06:23:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:23:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 06:23:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-07-21 06:23:28,680 INFO L87 Difference]: Start difference. First operand 3645 states and 5789 transitions. Second operand has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (57), 10 states have call predecessors, (57), 11 states have return successors, (55), 11 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-21 06:23:30,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:23:32,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:23:35,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:23:37,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 06:23:39,530 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 [] [2022-07-21 06:23:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:23:46,050 INFO L93 Difference]: Finished difference Result 11647 states and 18847 transitions. [2022-07-21 06:23:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 06:23:46,051 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (57), 10 states have call predecessors, (57), 11 states have return successors, (55), 11 states have call predecessors, (55), 13 states have call successors, (55) Word has length 231 [2022-07-21 06:23:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:23:46,110 INFO L225 Difference]: With dead ends: 11647 [2022-07-21 06:23:46,110 INFO L226 Difference]: Without dead ends: 8013 [2022-07-21 06:23:46,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 507 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=1735, Unknown=0, NotChecked=0, Total=2162 [2022-07-21 06:23:46,140 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 2077 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 5804 mSolverCounterSat, 1917 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 7726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1917 IncrementalHoareTripleChecker+Valid, 5804 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:23:46,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 3932 Invalid, 7726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1917 Valid, 5804 Invalid, 5 Unknown, 0 Unchecked, 16.4s Time] [2022-07-21 06:23:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8013 states. [2022-07-21 06:23:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8013 to 7167. [2022-07-21 06:23:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 4499 states have (on average 1.2931762613914204) internal successors, (5818), 4429 states have internal predecessors, (5818), 2258 states have call successors, (2258), 251 states have call predecessors, (2258), 409 states have return successors, (3450), 2498 states have call predecessors, (3450), 2258 states have call successors, (3450) [2022-07-21 06:23:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 11526 transitions. [2022-07-21 06:23:46,795 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 11526 transitions. Word has length 231 [2022-07-21 06:23:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:23:46,795 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 11526 transitions. [2022-07-21 06:23:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (57), 10 states have call predecessors, (57), 11 states have return successors, (55), 11 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-21 06:23:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 11526 transitions. [2022-07-21 06:23:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 06:23:46,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:23:46,845 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:23:46,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 06:23:47,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 06:23:47,059 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:23:47,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:23:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash -212595133, now seen corresponding path program 1 times [2022-07-21 06:23:47,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:23:47,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275792164] [2022-07-21 06:23:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:23:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms