./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_stack-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:58:52,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:58:52,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:58:52,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:58:52,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:58:52,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:58:52,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:58:52,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:58:52,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:58:52,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:58:52,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:58:52,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:58:52,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:58:52,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:58:52,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:58:52,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:58:52,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:58:52,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:58:52,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:58:52,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:58:52,976 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:58:52,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:58:52,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:58:52,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:58:52,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:58:52,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:58:52,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:58:52,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:58:53,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:58:53,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:58:53,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:58:53,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:58:53,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:58:53,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:58:53,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:58:53,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:58:53,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:58:53,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:58:53,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:58:53,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:58:53,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:58:53,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:58:53,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:58:53,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:58:53,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:58:53,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:58:53,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:58:53,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:58:53,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:58:53,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:58:53,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:58:53,036 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:58:53,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:58:53,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:58:53,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:58:53,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:58:53,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:58:53,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:58:53,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:58:53,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:58:53,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:58:53,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:58:53,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:58:53,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:58:53,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:58:53,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:58:53,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:58:53,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:58:53,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:58:53,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:58:53,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:58:53,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:58:53,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:58:53,040 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:58:53,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:58:53,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:58:53,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 [2022-07-22 18:58:53,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:58:53,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:58:53,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:58:53,237 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:58:53,238 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:58:53,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-2.i [2022-07-22 18:58:53,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f66c2450c/6ed3620ebe834bbbbf2bf537509d3750/FLAGe54e25e20 [2022-07-22 18:58:53,715 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:58:53,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i [2022-07-22 18:58:53,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f66c2450c/6ed3620ebe834bbbbf2bf537509d3750/FLAGe54e25e20 [2022-07-22 18:58:53,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f66c2450c/6ed3620ebe834bbbbf2bf537509d3750 [2022-07-22 18:58:53,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:58:53,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:58:53,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:58:53,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:58:53,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:58:53,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:58:53" (1/1) ... [2022-07-22 18:58:53,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1329b6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:53, skipping insertion in model container [2022-07-22 18:58:53,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:58:53" (1/1) ... [2022-07-22 18:58:53,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:58:53,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:58:54,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i[34556,34569] [2022-07-22 18:58:54,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:58:54,255 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:58:54,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i[34556,34569] [2022-07-22 18:58:54,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:58:54,377 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:58:54,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54 WrapperNode [2022-07-22 18:58:54,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:58:54,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:58:54,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:58:54,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:58:54,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,465 INFO L137 Inliner]: procedures = 252, calls = 270, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 603 [2022-07-22 18:58:54,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:58:54,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:58:54,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:58:54,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:58:54,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:58:54,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:58:54,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:58:54,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:58:54,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (1/1) ... [2022-07-22 18:58:54,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:58:54,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:58:54,569 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) [2022-07-22 18:58:54,576 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 [2022-07-22 18:58:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 18:58:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 18:58:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 18:58:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-07-22 18:58:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-07-22 18:58:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 18:58:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 18:58:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 18:58:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-07-22 18:58:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-07-22 18:58:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 18:58:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 18:58:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-07-22 18:58:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-07-22 18:58:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:58:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 18:58:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-07-22 18:58:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-07-22 18:58:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-07-22 18:58:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-07-22 18:58:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-22 18:58:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-22 18:58:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 18:58:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 18:58:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-07-22 18:58:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-07-22 18:58:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:58:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:58:54,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:58:54,746 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:58:54,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:58:54,796 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:54,796 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-07-22 18:58:54,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0 != ~__CS_ret~0 % 256; [2022-07-22 18:58:54,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:54,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:54,824 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2022-07-22 18:58:54,825 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2022-07-22 18:58:54,825 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:54,825 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:54,825 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2022-07-22 18:58:54,825 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2022-07-22 18:58:55,110 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:55,110 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-22 18:58:55,110 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:55,111 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-22 18:58:55,111 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:55,111 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-22 18:58:55,111 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:55,111 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-22 18:58:55,111 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-22 18:58:55,112 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2022-07-22 18:58:55,112 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-4: SUMMARY for call __CS_cs(); srcloc: null [2022-07-22 18:58:55,112 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-22 18:58:55,112 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2022-07-22 18:58:57,375 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:58:57,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:58:57,386 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 18:58:57,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:58:57 BoogieIcfgContainer [2022-07-22 18:58:57,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:58:57,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:58:57,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:58:57,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:58:57,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:58:53" (1/3) ... [2022-07-22 18:58:57,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3dd5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:58:57, skipping insertion in model container [2022-07-22 18:58:57,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:58:54" (2/3) ... [2022-07-22 18:58:57,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3dd5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:58:57, skipping insertion in model container [2022-07-22 18:58:57,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:58:57" (3/3) ... [2022-07-22 18:58:57,395 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2022-07-22 18:58:57,405 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:58:57,405 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:58:57,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:58:57,457 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@66b8b31a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3339baaa [2022-07-22 18:58:57,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:58:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-07-22 18:58:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 18:58:57,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:58:57,487 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] [2022-07-22 18:58:57,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:58:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:58:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1676979695, now seen corresponding path program 1 times [2022-07-22 18:58:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:58:57,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779060850] [2022-07-22 18:58:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:58:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:59:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 18:59:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 18:59:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:59:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 18:59:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 18:59:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 18:59:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 18:59:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 18:59:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 18:59:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 18:59:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 18:59:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 18:59:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 18:59:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 18:59:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 18:59:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:59:04,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779060850] [2022-07-22 18:59:04,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779060850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:59:04,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:59:04,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:59:04,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524332838] [2022-07-22 18:59:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:59:04,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:59:04,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:59:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:59:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:59:04,246 INFO L87 Difference]: Start difference. First operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 18:59:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:59:04,298 INFO L93 Difference]: Finished difference Result 440 states and 775 transitions. [2022-07-22 18:59:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:59:04,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2022-07-22 18:59:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:59:04,306 INFO L225 Difference]: With dead ends: 440 [2022-07-22 18:59:04,306 INFO L226 Difference]: Without dead ends: 218 [2022-07-22 18:59:04,311 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 [2022-07-22 18:59:04,313 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:59:04,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:59:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-22 18:59:04,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-07-22 18:59:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 133 states have (on average 1.4887218045112782) internal successors, (198), 135 states have internal predecessors, (198), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-07-22 18:59:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 348 transitions. [2022-07-22 18:59:04,353 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 348 transitions. Word has length 94 [2022-07-22 18:59:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:59:04,354 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 348 transitions. [2022-07-22 18:59:04,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 18:59:04,354 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 348 transitions. [2022-07-22 18:59:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 18:59:04,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:59:04,360 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] [2022-07-22 18:59:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:59:04,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:59:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:59:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1062498259, now seen corresponding path program 1 times [2022-07-22 18:59:04,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:59:04,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405654234] [2022-07-22 18:59:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:59:04,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:59:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 18:59:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 18:59:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 18:59:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 18:59:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 18:59:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 18:59:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 18:59:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 18:59:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 18:59:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 18:59:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 18:59:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 18:59:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 18:59:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 18:59:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 18:59:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:59:15,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405654234] [2022-07-22 18:59:15,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405654234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:59:15,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:59:15,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:59:15,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478043980] [2022-07-22 18:59:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:59:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:59:15,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:59:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:59:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:59:15,890 INFO L87 Difference]: Start difference. First operand 218 states and 348 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 18:59:15,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:59:15,949 INFO L93 Difference]: Finished difference Result 432 states and 699 transitions. [2022-07-22 18:59:15,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:59:15,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2022-07-22 18:59:15,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:59:15,954 INFO L225 Difference]: With dead ends: 432 [2022-07-22 18:59:15,954 INFO L226 Difference]: Without dead ends: 398 [2022-07-22 18:59:15,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:59:15,956 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 307 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:59:15,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:59:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-07-22 18:59:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2022-07-22 18:59:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 135 states have call successors, (135), 18 states have call predecessors, (135), 18 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2022-07-22 18:59:15,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 648 transitions. [2022-07-22 18:59:15,993 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 648 transitions. Word has length 94 [2022-07-22 18:59:15,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:59:15,993 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 648 transitions. [2022-07-22 18:59:15,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 18:59:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 648 transitions. [2022-07-22 18:59:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-22 18:59:16,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:59:16,006 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:59:16,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:59:16,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:59:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:59:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash -800885455, now seen corresponding path program 1 times [2022-07-22 18:59:16,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:59:16,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555705002] [2022-07-22 18:59:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:59:16,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:59:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 18:59:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 18:59:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 18:59:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 18:59:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 18:59:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 18:59:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 18:59:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 18:59:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 18:59:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 18:59:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 18:59:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 18:59:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 18:59:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 18:59:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 18:59:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 18:59:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 18:59:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 18:59:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 18:59:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 18:59:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 18:59:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 18:59:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-22 18:59:24,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:59:24,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555705002] [2022-07-22 18:59:24,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555705002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:59:24,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:59:24,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 18:59:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670466185] [2022-07-22 18:59:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:59:24,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:59:24,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:59:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:59:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:59:24,627 INFO L87 Difference]: Start difference. First operand 397 states and 648 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 18:59:26,641 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 [] [2022-07-22 18:59:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:59:28,228 INFO L93 Difference]: Finished difference Result 1402 states and 2348 transitions. [2022-07-22 18:59:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 18:59:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2022-07-22 18:59:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:59:28,235 INFO L225 Difference]: With dead ends: 1402 [2022-07-22 18:59:28,235 INFO L226 Difference]: Without dead ends: 1014 [2022-07-22 18:59:28,237 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 [2022-07-22 18:59:28,238 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 708 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:59:28,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1810 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1265 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 18:59:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-07-22 18:59:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 893. [2022-07-22 18:59:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 542 states have (on average 1.529520295202952) internal successors, (829), 559 states have internal predecessors, (829), 307 states have call successors, (307), 36 states have call predecessors, (307), 43 states have return successors, (350), 307 states have call predecessors, (350), 307 states have call successors, (350) [2022-07-22 18:59:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1486 transitions. [2022-07-22 18:59:28,324 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1486 transitions. Word has length 183 [2022-07-22 18:59:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:59:28,325 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1486 transitions. [2022-07-22 18:59:28,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 18:59:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1486 transitions. [2022-07-22 18:59:28,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-22 18:59:28,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:59:28,334 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:59:28,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:59:28,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:59:28,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:59:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash -856649123, now seen corresponding path program 1 times [2022-07-22 18:59:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:59:28,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477376457] [2022-07-22 18:59:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:59:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:59:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 18:59:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 18:59:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 18:59:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 18:59:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 18:59:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 18:59:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 18:59:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 18:59:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 18:59:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 18:59:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 18:59:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 18:59:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 18:59:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 18:59:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 18:59:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 18:59:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 18:59:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 18:59:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 18:59:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 18:59:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 18:59:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 18:59:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-22 18:59:37,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:59:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477376457] [2022-07-22 18:59:37,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477376457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:59:37,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:59:37,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 18:59:37,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257643641] [2022-07-22 18:59:37,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:59:37,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:59:37,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:59:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:59:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:59:37,463 INFO L87 Difference]: Start difference. First operand 893 states and 1486 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 18:59:39,476 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 [] [2022-07-22 18:59:40,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:59:40,990 INFO L93 Difference]: Finished difference Result 1883 states and 3132 transitions. [2022-07-22 18:59:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 18:59:40,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2022-07-22 18:59:40,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:59:40,996 INFO L225 Difference]: With dead ends: 1883 [2022-07-22 18:59:40,996 INFO L226 Difference]: Without dead ends: 959 [2022-07-22 18:59:41,002 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 [2022-07-22 18:59:41,003 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 855 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 452 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:59:41,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1531 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 1168 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-07-22 18:59:41,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-07-22 18:59:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 875. [2022-07-22 18:59:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 532 states have (on average 1.5244360902255638) internal successors, (811), 549 states have internal predecessors, (811), 299 states have call successors, (299), 35 states have call predecessors, (299), 43 states have return successors, (335), 300 states have call predecessors, (335), 299 states have call successors, (335) [2022-07-22 18:59:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1445 transitions. [2022-07-22 18:59:41,106 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1445 transitions. Word has length 183 [2022-07-22 18:59:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:59:41,106 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1445 transitions. [2022-07-22 18:59:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 18:59:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1445 transitions. [2022-07-22 18:59:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-22 18:59:41,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:59:41,112 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:59:41,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:59:41,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:59:41,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:59:41,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1909419641, now seen corresponding path program 1 times [2022-07-22 18:59:41,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:59:41,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598998287] [2022-07-22 18:59:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:59:41,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:59:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 18:59:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 18:59:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 18:59:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 18:59:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 18:59:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 18:59:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 18:59:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 18:59:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 18:59:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 18:59:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 18:59:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 18:59:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 18:59:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 18:59:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 18:59:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 18:59:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 18:59:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 18:59:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-22 18:59:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 18:59:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 18:59:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 18:59:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 18:59:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:59:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2022-07-22 18:59:59,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:59:59,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598998287] [2022-07-22 18:59:59,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598998287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:59:59,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583857144] [2022-07-22 18:59:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:59:59,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:59:59,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:59:59,650 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) [2022-07-22 18:59:59,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:00:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:05,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 17177 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 19:00:05,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:00:05,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 19:00:05,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 19:00:05,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 19:00:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2022-07-22 19:00:05,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:00:05,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583857144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:00:05,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:00:05,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-22 19:00:05,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155244852] [2022-07-22 19:00:05,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:00:05,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 19:00:05,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:00:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 19:00:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-22 19:00:05,153 INFO L87 Difference]: Start difference. First operand 875 states and 1445 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 19:00:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:00:05,260 INFO L93 Difference]: Finished difference Result 1357 states and 2190 transitions. [2022-07-22 19:00:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 19:00:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 183 [2022-07-22 19:00:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:00:05,266 INFO L225 Difference]: With dead ends: 1357 [2022-07-22 19:00:05,266 INFO L226 Difference]: Without dead ends: 794 [2022-07-22 19:00:05,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:00:05,272 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 399 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:00:05,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1197 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 19:00:05,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-07-22 19:00:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 692. [2022-07-22 19:00:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 428 states have (on average 1.4789719626168225) internal successors, (633), 441 states have internal predecessors, (633), 220 states have call successors, (220), 35 states have call predecessors, (220), 43 states have return successors, (250), 221 states have call predecessors, (250), 220 states have call successors, (250) [2022-07-22 19:00:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1103 transitions. [2022-07-22 19:00:05,310 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1103 transitions. Word has length 183 [2022-07-22 19:00:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:00:05,310 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1103 transitions. [2022-07-22 19:00:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 19:00:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1103 transitions. [2022-07-22 19:00:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 19:00:05,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:00:05,315 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-22 19:00:05,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 19:00:05,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:00:05,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:00:05,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:00:05,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1126606325, now seen corresponding path program 1 times [2022-07-22 19:00:05,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:00:05,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18479786] [2022-07-22 19:00:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:00:05,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:00:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 19:00:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 19:00:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:00:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 19:00:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 19:00:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:00:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:00:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:00:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 19:00:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 19:00:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 19:00:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 19:00:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 19:00:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 19:00:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:00:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 19:00:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 19:00:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 19:00:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 19:00:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 19:00:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 19:00:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-22 19:00:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 19:00:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-07-22 19:00:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:00:17,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18479786] [2022-07-22 19:00:17,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18479786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:00:17,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080049046] [2022-07-22 19:00:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:00:17,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:00:17,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:00:17,550 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) [2022-07-22 19:00:17,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 19:00:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:23,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 17321 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 19:00:23,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:00:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 349 proven. 6 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-07-22 19:00:23,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 19:00:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-07-22 19:00:23,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080049046] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 19:00:23,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 19:00:23,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 22 [2022-07-22 19:00:23,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688430513] [2022-07-22 19:00:23,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 19:00:23,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 19:00:23,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:00:23,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 19:00:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-07-22 19:00:23,951 INFO L87 Difference]: Start difference. First operand 692 states and 1103 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 17 states have internal predecessors, (109), 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) [2022-07-22 19:00:25,982 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 [] [2022-07-22 19:00:28,000 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 [] [2022-07-22 19:00:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:00:45,111 INFO L93 Difference]: Finished difference Result 4962 states and 8452 transitions. [2022-07-22 19:00:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-07-22 19:00:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 17 states have internal predecessors, (109), 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 187 [2022-07-22 19:00:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:00:45,150 INFO L225 Difference]: With dead ends: 4962 [2022-07-22 19:00:45,150 INFO L226 Difference]: Without dead ends: 4268 [2022-07-22 19:00:45,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16517 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4644, Invalid=34362, Unknown=0, NotChecked=0, Total=39006 [2022-07-22 19:00:45,165 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 6066 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 12046 mSolverCounterSat, 10079 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6087 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 22127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10079 IncrementalHoareTripleChecker+Valid, 12046 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:00:45,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6087 Valid, 3441 Invalid, 22127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10079 Valid, 12046 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2022-07-22 19:00:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-07-22 19:00:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 3652. [2022-07-22 19:00:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2300 states have (on average 1.2978260869565217) internal successors, (2985), 2242 states have internal predecessors, (2985), 1128 states have call successors, (1128), 137 states have call predecessors, (1128), 223 states have return successors, (1731), 1276 states have call predecessors, (1731), 1128 states have call successors, (1731) [2022-07-22 19:00:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5844 transitions. [2022-07-22 19:00:45,372 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5844 transitions. Word has length 187 [2022-07-22 19:00:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:00:45,373 INFO L495 AbstractCegarLoop]: Abstraction has 3652 states and 5844 transitions. [2022-07-22 19:00:45,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 17 states have internal predecessors, (109), 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) [2022-07-22 19:00:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5844 transitions. [2022-07-22 19:00:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 19:00:45,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:00:45,394 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-22 19:00:45,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 19:00:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 19:00:45,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:00:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:00:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash 734458644, now seen corresponding path program 1 times [2022-07-22 19:00:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:00:45,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920404999] [2022-07-22 19:00:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:00:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:00:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 19:00:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 19:00:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:00:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 19:00:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 19:00:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:00:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:00:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:00:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 19:00:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 19:00:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 19:00:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 19:00:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 19:00:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 19:00:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 19:00:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:00:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 19:00:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 19:00:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 19:00:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 19:00:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 19:00:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 19:00:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-22 19:00:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 19:00:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:00:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-07-22 19:00:56,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:00:56,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920404999] [2022-07-22 19:00:56,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920404999] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:00:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815382756] [2022-07-22 19:00:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:00:56,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:00:56,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:00:56,968 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) [2022-07-22 19:00:56,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 19:01:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:01:03,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 17390 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 19:01:03,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:01:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-07-22 19:01:04,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 19:01:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-22 19:01:04,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815382756] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 19:01:04,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 19:01:04,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2022-07-22 19:01:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304065598] [2022-07-22 19:01:04,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 19:01:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 19:01:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:01:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 19:01:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-07-22 19:01:04,471 INFO L87 Difference]: Start difference. First operand 3652 states and 5844 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 19 states have internal predecessors, (111), 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) [2022-07-22 19:01:06,493 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 [] [2022-07-22 19:01:08,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 19:01:10,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 19:01:12,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 19:01:14,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 19:01:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:01:20,096 INFO L93 Difference]: Finished difference Result 11746 states and 19082 transitions. [2022-07-22 19:01:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 19:01:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 19 states have internal predecessors, (111), 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 187 [2022-07-22 19:01:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:01:20,135 INFO L225 Difference]: With dead ends: 11746 [2022-07-22 19:01:20,136 INFO L226 Difference]: Without dead ends: 8061 [2022-07-22 19:01:20,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=1735, Unknown=0, NotChecked=0, Total=2162 [2022-07-22 19:01:20,156 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1891 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 6050 mSolverCounterSat, 1785 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 7840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1785 IncrementalHoareTripleChecker+Valid, 6050 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:01:20,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 4053 Invalid, 7840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1785 Valid, 6050 Invalid, 5 Unknown, 0 Unchecked, 14.6s Time] [2022-07-22 19:01:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8061 states. [2022-07-22 19:01:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8061 to 7241. [2022-07-22 19:01:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 4511 states have (on average 1.2977166925293726) internal successors, (5854), 4444 states have internal predecessors, (5854), 2327 states have call successors, (2327), 243 states have call predecessors, (2327), 402 states have return successors, (3539), 2565 states have call predecessors, (3539), 2327 states have call successors, (3539) [2022-07-22 19:01:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 11720 transitions. [2022-07-22 19:01:20,594 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 11720 transitions. Word has length 187 [2022-07-22 19:01:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:01:20,594 INFO L495 AbstractCegarLoop]: Abstraction has 7241 states and 11720 transitions. [2022-07-22 19:01:20,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 19 states have internal predecessors, (111), 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) [2022-07-22 19:01:20,604 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 11720 transitions. [2022-07-22 19:01:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 19:01:20,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:01:20,635 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-22 19:01:20,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 19:01:20,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:01:20,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:01:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:01:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash 916191893, now seen corresponding path program 1 times [2022-07-22 19:01:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:01:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808401626] [2022-07-22 19:01:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:01:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms