./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:27:45,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:27:45,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:27:45,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:27:45,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:27:45,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:27:45,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:27:45,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:27:45,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:27:45,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:27:45,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:27:45,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:27:45,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:27:45,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:27:45,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:27:45,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:27:45,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:27:45,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:27:45,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:27:45,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:27:45,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:27:45,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:27:45,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:27:45,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:27:45,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:27:45,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:27:45,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:27:45,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:27:45,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:27:45,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:27:45,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:27:45,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:27:45,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:27:45,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:27:45,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:27:45,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:27:45,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:27:45,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:27:45,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:27:45,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:27:45,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:27:45,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:27:45,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:27:45,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:27:45,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:27:45,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:27:45,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:27:45,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:27:45,980 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:27:45,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:27:45,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:27:45,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:27:45,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:27:45,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:27:45,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:27:45,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:27:45,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:27:45,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:27:45,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:27:45,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:27:45,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:27:45,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:27:45,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:27:45,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:27:45,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:27:45,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:27:45,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:27:45,984 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:27:45,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:27:45,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:27:45,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:27:45,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f21bcf4203715ff2cf8f1fa847025b0ca29b6eb32fc30a64baf7cbf3cb00ebc [2021-11-06 15:27:46,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:27:46,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:27:46,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:27:46,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:27:46,187 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:27:46,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:27:46,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed6b9ff2/00b25cd8a94041fe9aa81eb3748f4e7b/FLAG8593b90de [2021-11-06 15:27:46,893 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:27:46,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:27:46,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed6b9ff2/00b25cd8a94041fe9aa81eb3748f4e7b/FLAG8593b90de [2021-11-06 15:27:47,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed6b9ff2/00b25cd8a94041fe9aa81eb3748f4e7b [2021-11-06 15:27:47,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:27:47,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:27:47,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:27:47,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:27:47,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:27:47,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:27:47" (1/1) ... [2021-11-06 15:27:47,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f80e57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:47, skipping insertion in model container [2021-11-06 15:27:47,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:27:47" (1/1) ... [2021-11-06 15:27:47,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:27:47,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:27:47,909 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2021-11-06 15:27:47,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:27:47,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:27:48,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i[188986,188999] [2021-11-06 15:27:48,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:27:48,246 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:27:48,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48 WrapperNode [2021-11-06 15:27:48,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:27:48,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:27:48,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:27:48,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:27:48,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:27:48,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:27:48,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:27:48,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:27:48,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:27:48,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:27:48,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:27:48,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:27:48,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (1/1) ... [2021-11-06 15:27:48,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:27:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:27:48,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:27:48,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:27:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:27:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-06 15:27:48,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-06 15:27:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:27:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:27:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:27:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 15:27:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 15:27:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 15:27:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:27:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure rx_submit [2021-11-06 15:27:48,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_submit [2021-11-06 15:27:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:27:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:27:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:27:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:27:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:27:48,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:27:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:27:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:27:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:27:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:27:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:27:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:27:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:27:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure rx_complete [2021-11-06 15:27:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_complete [2021-11-06 15:27:52,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:27:52,513 INFO L299 CfgBuilder]: Removed 477 assume(true) statements. [2021-11-06 15:27:52,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:27:52 BoogieIcfgContainer [2021-11-06 15:27:52,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:27:52,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:27:52,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:27:52,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:27:52,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:27:47" (1/3) ... [2021-11-06 15:27:52,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457dd3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:27:52, skipping insertion in model container [2021-11-06 15:27:52,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:27:48" (2/3) ... [2021-11-06 15:27:52,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457dd3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:27:52, skipping insertion in model container [2021-11-06 15:27:52,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:27:52" (3/3) ... [2021-11-06 15:27:52,523 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-47dffc7-1-144_2a-drivers--net--usb--cdc-phonet.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:27:52,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:27:52,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 15:27:52,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:27:52,580 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:27:52,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 15:27:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 500 states, 481 states have (on average 1.4282744282744282) internal successors, (687), 487 states have internal predecessors, (687), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-06 15:27:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 15:27:52,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:52,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:52,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1490593226, now seen corresponding path program 1 times [2021-11-06 15:27:52,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:52,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965828389] [2021-11-06 15:27:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:52,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:52,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:52,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965828389] [2021-11-06 15:27:52,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965828389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:52,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:52,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:52,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385943550] [2021-11-06 15:27:52,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:27:52,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:27:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:27:52,908 INFO L87 Difference]: Start difference. First operand has 500 states, 481 states have (on average 1.4282744282744282) internal successors, (687), 487 states have internal predecessors, (687), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:52,965 INFO L93 Difference]: Finished difference Result 996 states and 1409 transitions. [2021-11-06 15:27:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:27:52,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-06 15:27:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:52,977 INFO L225 Difference]: With dead ends: 996 [2021-11-06 15:27:52,978 INFO L226 Difference]: Without dead ends: 489 [2021-11-06 15:27:52,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:27:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-06 15:27:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2021-11-06 15:27:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 471 states have (on average 1.3821656050955413) internal successors, (651), 476 states have internal predecessors, (651), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-06 15:27:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 667 transitions. [2021-11-06 15:27:53,036 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 667 transitions. Word has length 31 [2021-11-06 15:27:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:53,036 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 667 transitions. [2021-11-06 15:27:53,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 667 transitions. [2021-11-06 15:27:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 15:27:53,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:53,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:53,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:27:53,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1477252530, now seen corresponding path program 1 times [2021-11-06 15:27:53,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:53,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570988747] [2021-11-06 15:27:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:53,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:53,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:53,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570988747] [2021-11-06 15:27:53,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570988747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:53,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:53,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:53,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394905073] [2021-11-06 15:27:53,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:53,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:53,244 INFO L87 Difference]: Start difference. First operand 489 states and 667 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:54,057 INFO L93 Difference]: Finished difference Result 1399 states and 1929 transitions. [2021-11-06 15:27:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:54,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-06 15:27:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:54,062 INFO L225 Difference]: With dead ends: 1399 [2021-11-06 15:27:54,062 INFO L226 Difference]: Without dead ends: 931 [2021-11-06 15:27:54,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-11-06 15:27:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2021-11-06 15:27:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 900 states have (on average 1.3888888888888888) internal successors, (1250), 906 states have internal predecessors, (1250), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-06 15:27:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1282 transitions. [2021-11-06 15:27:54,102 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1282 transitions. Word has length 31 [2021-11-06 15:27:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:54,102 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1282 transitions. [2021-11-06 15:27:54,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1282 transitions. [2021-11-06 15:27:54,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 15:27:54,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:54,104 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:54,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:27:54,104 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:54,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:54,105 INFO L85 PathProgramCache]: Analyzing trace with hash -528626007, now seen corresponding path program 1 times [2021-11-06 15:27:54,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:54,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598713653] [2021-11-06 15:27:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:54,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:54,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:54,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598713653] [2021-11-06 15:27:54,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598713653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:54,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:54,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:54,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442584025] [2021-11-06 15:27:54,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:54,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:54,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:54,234 INFO L87 Difference]: Start difference. First operand 931 states and 1282 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:54,291 INFO L93 Difference]: Finished difference Result 961 states and 1310 transitions. [2021-11-06 15:27:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-06 15:27:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:54,296 INFO L225 Difference]: With dead ends: 961 [2021-11-06 15:27:54,296 INFO L226 Difference]: Without dead ends: 946 [2021-11-06 15:27:54,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-11-06 15:27:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 931. [2021-11-06 15:27:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 900 states have (on average 1.3877777777777778) internal successors, (1249), 906 states have internal predecessors, (1249), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-06 15:27:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1281 transitions. [2021-11-06 15:27:54,332 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1281 transitions. Word has length 40 [2021-11-06 15:27:54,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:54,333 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1281 transitions. [2021-11-06 15:27:54,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:54,334 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1281 transitions. [2021-11-06 15:27:54,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 15:27:54,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:54,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:54,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:27:54,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash -528566425, now seen corresponding path program 1 times [2021-11-06 15:27:54,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:54,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123529292] [2021-11-06 15:27:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:54,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:54,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:54,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123529292] [2021-11-06 15:27:54,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123529292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:54,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:54,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:54,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155869395] [2021-11-06 15:27:54,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:54,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:54,549 INFO L87 Difference]: Start difference. First operand 931 states and 1281 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:54,681 INFO L93 Difference]: Finished difference Result 2749 states and 3844 transitions. [2021-11-06 15:27:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-06 15:27:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:54,689 INFO L225 Difference]: With dead ends: 2749 [2021-11-06 15:27:54,690 INFO L226 Difference]: Without dead ends: 1839 [2021-11-06 15:27:54,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-11-06 15:27:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1827. [2021-11-06 15:27:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1770 states have (on average 1.385310734463277) internal successors, (2452), 1778 states have internal predecessors, (2452), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 15:27:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2532 transitions. [2021-11-06 15:27:54,748 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2532 transitions. Word has length 40 [2021-11-06 15:27:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:54,749 INFO L470 AbstractCegarLoop]: Abstraction has 1827 states and 2532 transitions. [2021-11-06 15:27:54,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:54,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2532 transitions. [2021-11-06 15:27:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 15:27:54,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:54,750 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:54,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:27:54,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:54,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash 794317441, now seen corresponding path program 1 times [2021-11-06 15:27:54,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:54,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289178665] [2021-11-06 15:27:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:54,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:54,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:54,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289178665] [2021-11-06 15:27:54,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289178665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:54,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:54,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:54,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135042192] [2021-11-06 15:27:54,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:54,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:54,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:54,899 INFO L87 Difference]: Start difference. First operand 1827 states and 2532 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:54,948 INFO L93 Difference]: Finished difference Result 1827 states and 2532 transitions. [2021-11-06 15:27:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 15:27:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:54,958 INFO L225 Difference]: With dead ends: 1827 [2021-11-06 15:27:54,958 INFO L226 Difference]: Without dead ends: 1825 [2021-11-06 15:27:54,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2021-11-06 15:27:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1825. [2021-11-06 15:27:55,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1769 states have (on average 1.3849632560768796) internal successors, (2450), 1776 states have internal predecessors, (2450), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 15:27:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2530 transitions. [2021-11-06 15:27:55,023 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2530 transitions. Word has length 41 [2021-11-06 15:27:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:55,023 INFO L470 AbstractCegarLoop]: Abstraction has 1825 states and 2530 transitions. [2021-11-06 15:27:55,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2530 transitions. [2021-11-06 15:27:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 15:27:55,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:55,027 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:55,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:27:55,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1145955663, now seen corresponding path program 1 times [2021-11-06 15:27:55,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:55,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442099450] [2021-11-06 15:27:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:55,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:55,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:55,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442099450] [2021-11-06 15:27:55,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442099450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:55,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:55,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:55,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185198321] [2021-11-06 15:27:55,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:55,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:55,120 INFO L87 Difference]: Start difference. First operand 1825 states and 2530 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:55,202 INFO L93 Difference]: Finished difference Result 1825 states and 2530 transitions. [2021-11-06 15:27:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-06 15:27:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:55,208 INFO L225 Difference]: With dead ends: 1825 [2021-11-06 15:27:55,208 INFO L226 Difference]: Without dead ends: 1823 [2021-11-06 15:27:55,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2021-11-06 15:27:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1823. [2021-11-06 15:27:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1768 states have (on average 1.3846153846153846) internal successors, (2448), 1774 states have internal predecessors, (2448), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 15:27:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2528 transitions. [2021-11-06 15:27:55,273 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2528 transitions. Word has length 42 [2021-11-06 15:27:55,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:55,274 INFO L470 AbstractCegarLoop]: Abstraction has 1823 states and 2528 transitions. [2021-11-06 15:27:55,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2528 transitions. [2021-11-06 15:27:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 15:27:55,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:55,276 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:55,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:27:55,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:55,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:55,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1164879733, now seen corresponding path program 1 times [2021-11-06 15:27:55,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:55,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780647458] [2021-11-06 15:27:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:55,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:55,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:55,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780647458] [2021-11-06 15:27:55,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780647458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:55,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:55,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:55,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214705932] [2021-11-06 15:27:55,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:55,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:55,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:55,397 INFO L87 Difference]: Start difference. First operand 1823 states and 2528 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:55,452 INFO L93 Difference]: Finished difference Result 1823 states and 2528 transitions. [2021-11-06 15:27:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:55,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-06 15:27:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:55,460 INFO L225 Difference]: With dead ends: 1823 [2021-11-06 15:27:55,460 INFO L226 Difference]: Without dead ends: 1821 [2021-11-06 15:27:55,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-11-06 15:27:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2021-11-06 15:27:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1767 states have (on average 1.3842671194114318) internal successors, (2446), 1772 states have internal predecessors, (2446), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 15:27:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2526 transitions. [2021-11-06 15:27:55,528 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2526 transitions. Word has length 43 [2021-11-06 15:27:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:55,528 INFO L470 AbstractCegarLoop]: Abstraction has 1821 states and 2526 transitions. [2021-11-06 15:27:55,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2526 transitions. [2021-11-06 15:27:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 15:27:55,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:55,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:55,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:27:55,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1751525893, now seen corresponding path program 1 times [2021-11-06 15:27:55,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:55,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787873152] [2021-11-06 15:27:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:55,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:55,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:55,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787873152] [2021-11-06 15:27:55,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787873152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:55,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:55,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:27:55,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365605956] [2021-11-06 15:27:55,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:55,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:55,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:55,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:55,612 INFO L87 Difference]: Start difference. First operand 1821 states and 2526 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:55,675 INFO L93 Difference]: Finished difference Result 1821 states and 2526 transitions. [2021-11-06 15:27:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:55,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 15:27:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:55,682 INFO L225 Difference]: With dead ends: 1821 [2021-11-06 15:27:55,683 INFO L226 Difference]: Without dead ends: 1812 [2021-11-06 15:27:55,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:55,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-11-06 15:27:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1812. [2021-11-06 15:27:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1759 states have (on average 1.3843092666287664) internal successors, (2435), 1763 states have internal predecessors, (2435), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (48), 32 states have call predecessors, (48), 32 states have call successors, (48) [2021-11-06 15:27:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2515 transitions. [2021-11-06 15:27:55,745 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2515 transitions. Word has length 44 [2021-11-06 15:27:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:55,745 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 2515 transitions. [2021-11-06 15:27:55,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2515 transitions. [2021-11-06 15:27:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 15:27:55,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:55,748 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:27:55,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:27:55,749 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1024522123, now seen corresponding path program 1 times [2021-11-06 15:27:55,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:55,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502432470] [2021-11-06 15:27:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:55,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:27:55,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:55,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502432470] [2021-11-06 15:27:55,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502432470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:55,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:55,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:55,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406606687] [2021-11-06 15:27:55,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:55,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:55,815 INFO L87 Difference]: Start difference. First operand 1812 states and 2515 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:55,989 INFO L93 Difference]: Finished difference Result 5058 states and 7059 transitions. [2021-11-06 15:27:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:55,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 15:27:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:56,003 INFO L225 Difference]: With dead ends: 5058 [2021-11-06 15:27:56,003 INFO L226 Difference]: Without dead ends: 3267 [2021-11-06 15:27:56,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-11-06 15:27:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3082. [2021-11-06 15:27:56,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 2981 states have (on average 1.3911439114391144) internal successors, (4147), 2989 states have internal predecessors, (4147), 60 states have call successors, (60), 40 states have call predecessors, (60), 40 states have return successors, (138), 60 states have call predecessors, (138), 60 states have call successors, (138) [2021-11-06 15:27:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4345 transitions. [2021-11-06 15:27:56,177 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 4345 transitions. Word has length 65 [2021-11-06 15:27:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:56,177 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 4345 transitions. [2021-11-06 15:27:56,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 4345 transitions. [2021-11-06 15:27:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-06 15:27:56,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:56,185 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:56,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:27:56,185 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1935014145, now seen corresponding path program 1 times [2021-11-06 15:27:56,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:56,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983226980] [2021-11-06 15:27:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:56,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:27:56,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:56,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983226980] [2021-11-06 15:27:56,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983226980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:56,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:56,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:56,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141660227] [2021-11-06 15:27:56,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:56,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:56,280 INFO L87 Difference]: Start difference. First operand 3082 states and 4345 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:56,555 INFO L93 Difference]: Finished difference Result 8639 states and 12214 transitions. [2021-11-06 15:27:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:56,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-06 15:27:56,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:56,586 INFO L225 Difference]: With dead ends: 8639 [2021-11-06 15:27:56,586 INFO L226 Difference]: Without dead ends: 5578 [2021-11-06 15:27:56,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5578 states. [2021-11-06 15:27:56,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5578 to 5566. [2021-11-06 15:27:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5365 states have (on average 1.3936626281453868) internal successors, (7477), 5381 states have internal predecessors, (7477), 120 states have call successors, (120), 80 states have call predecessors, (120), 80 states have return successors, (276), 120 states have call predecessors, (276), 120 states have call successors, (276) [2021-11-06 15:27:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7873 transitions. [2021-11-06 15:27:56,822 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7873 transitions. Word has length 116 [2021-11-06 15:27:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:56,823 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 7873 transitions. [2021-11-06 15:27:56,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:56,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7873 transitions. [2021-11-06 15:27:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 15:27:56,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:56,831 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:56,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:27:56,832 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1056287104, now seen corresponding path program 1 times [2021-11-06 15:27:56,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:56,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352916091] [2021-11-06 15:27:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:56,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:27:56,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:56,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352916091] [2021-11-06 15:27:56,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352916091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:56,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:56,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:56,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155301301] [2021-11-06 15:27:56,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:56,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:56,934 INFO L87 Difference]: Start difference. First operand 5566 states and 7873 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:57,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:57,262 INFO L93 Difference]: Finished difference Result 13248 states and 18749 transitions. [2021-11-06 15:27:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:57,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 15:27:57,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:57,310 INFO L225 Difference]: With dead ends: 13248 [2021-11-06 15:27:57,310 INFO L226 Difference]: Without dead ends: 7703 [2021-11-06 15:27:57,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7703 states. [2021-11-06 15:27:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7703 to 5646. [2021-11-06 15:27:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5445 states have (on average 1.396694214876033) internal successors, (7605), 5461 states have internal predecessors, (7605), 120 states have call successors, (120), 80 states have call predecessors, (120), 80 states have return successors, (276), 120 states have call predecessors, (276), 120 states have call successors, (276) [2021-11-06 15:27:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 8001 transitions. [2021-11-06 15:27:57,552 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 8001 transitions. Word has length 124 [2021-11-06 15:27:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:57,552 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 8001 transitions. [2021-11-06 15:27:57,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 8001 transitions. [2021-11-06 15:27:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-06 15:27:57,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:57,558 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:57,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 15:27:57,558 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2071442461, now seen corresponding path program 1 times [2021-11-06 15:27:57,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:57,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130445302] [2021-11-06 15:27:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:57,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:27:57,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:57,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130445302] [2021-11-06 15:27:57,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130445302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:57,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:57,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:57,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529789779] [2021-11-06 15:27:57,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:57,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:57,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:57,694 INFO L87 Difference]: Start difference. First operand 5646 states and 8001 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:27:58,616 INFO L93 Difference]: Finished difference Result 11892 states and 16928 transitions. [2021-11-06 15:27:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:27:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-06 15:27:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:27:58,649 INFO L225 Difference]: With dead ends: 11892 [2021-11-06 15:27:58,649 INFO L226 Difference]: Without dead ends: 6267 [2021-11-06 15:27:58,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2021-11-06 15:27:58,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6170. [2021-11-06 15:27:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6170 states, 5969 states have (on average 1.4002345451499414) internal successors, (8358), 5985 states have internal predecessors, (8358), 120 states have call successors, (120), 80 states have call predecessors, (120), 80 states have return successors, (276), 120 states have call predecessors, (276), 120 states have call successors, (276) [2021-11-06 15:27:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 8754 transitions. [2021-11-06 15:27:58,937 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 8754 transitions. Word has length 131 [2021-11-06 15:27:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:27:58,938 INFO L470 AbstractCegarLoop]: Abstraction has 6170 states and 8754 transitions. [2021-11-06 15:27:58,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:27:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 8754 transitions. [2021-11-06 15:27:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 15:27:58,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:27:58,944 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:27:58,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 15:27:58,945 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:27:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:27:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash 834194963, now seen corresponding path program 1 times [2021-11-06 15:27:58,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:27:58,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871177587] [2021-11-06 15:27:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:27:58,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:27:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:27:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 15:27:59,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:27:59,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871177587] [2021-11-06 15:27:59,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871177587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:27:59,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:27:59,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:27:59,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810033721] [2021-11-06 15:27:59,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:27:59,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:27:59,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:27:59,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:27:59,125 INFO L87 Difference]: Start difference. First operand 6170 states and 8754 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:00,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:00,596 INFO L93 Difference]: Finished difference Result 14492 states and 20686 transitions. [2021-11-06 15:28:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:28:00,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-06 15:28:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:00,631 INFO L225 Difference]: With dead ends: 14492 [2021-11-06 15:28:00,631 INFO L226 Difference]: Without dead ends: 8343 [2021-11-06 15:28:00,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2021-11-06 15:28:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 8214. [2021-11-06 15:28:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8214 states, 7925 states have (on average 1.4045425867507886) internal successors, (11131), 7949 states have internal predecessors, (11131), 168 states have call successors, (168), 120 states have call predecessors, (168), 120 states have return successors, (420), 168 states have call predecessors, (420), 168 states have call successors, (420) [2021-11-06 15:28:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 11719 transitions. [2021-11-06 15:28:01,107 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 11719 transitions. Word has length 145 [2021-11-06 15:28:01,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:01,108 INFO L470 AbstractCegarLoop]: Abstraction has 8214 states and 11719 transitions. [2021-11-06 15:28:01,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 11719 transitions. [2021-11-06 15:28:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 15:28:01,119 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:01,119 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:01,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 15:28:01,120 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash -229559451, now seen corresponding path program 1 times [2021-11-06 15:28:01,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:01,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353726100] [2021-11-06 15:28:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:01,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 15:28:01,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:01,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353726100] [2021-11-06 15:28:01,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353726100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:01,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:01,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:28:01,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469037436] [2021-11-06 15:28:01,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:28:01,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:28:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:28:01,325 INFO L87 Difference]: Start difference. First operand 8214 states and 11719 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:02,481 INFO L93 Difference]: Finished difference Result 35033 states and 50047 transitions. [2021-11-06 15:28:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 15:28:02,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-06 15:28:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:02,560 INFO L225 Difference]: With dead ends: 35033 [2021-11-06 15:28:02,560 INFO L226 Difference]: Without dead ends: 26840 [2021-11-06 15:28:02,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-06 15:28:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26840 states. [2021-11-06 15:28:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26840 to 8358. [2021-11-06 15:28:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8358 states, 8069 states have (on average 1.3973230883628702) internal successors, (11275), 8093 states have internal predecessors, (11275), 168 states have call successors, (168), 120 states have call predecessors, (168), 120 states have return successors, (420), 168 states have call predecessors, (420), 168 states have call successors, (420) [2021-11-06 15:28:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8358 states to 8358 states and 11863 transitions. [2021-11-06 15:28:03,035 INFO L78 Accepts]: Start accepts. Automaton has 8358 states and 11863 transitions. Word has length 157 [2021-11-06 15:28:03,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:03,035 INFO L470 AbstractCegarLoop]: Abstraction has 8358 states and 11863 transitions. [2021-11-06 15:28:03,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 8358 states and 11863 transitions. [2021-11-06 15:28:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 15:28:03,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:03,041 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:03,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 15:28:03,042 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1817907353, now seen corresponding path program 1 times [2021-11-06 15:28:03,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:03,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861422760] [2021-11-06 15:28:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:03,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 15:28:03,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:03,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861422760] [2021-11-06 15:28:03,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861422760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:03,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333795059] [2021-11-06 15:28:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:03,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:03,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:03,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:03,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:28:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:03,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:28:03,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:28:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 15:28:04,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333795059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:04,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:28:04,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-06 15:28:04,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697528498] [2021-11-06 15:28:04,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:28:04,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:28:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:28:04,300 INFO L87 Difference]: Start difference. First operand 8358 states and 11863 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:07,502 INFO L93 Difference]: Finished difference Result 33368 states and 47381 transitions. [2021-11-06 15:28:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:28:07,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-06 15:28:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:07,630 INFO L225 Difference]: With dead ends: 33368 [2021-11-06 15:28:07,630 INFO L226 Difference]: Without dead ends: 33363 [2021-11-06 15:28:07,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:28:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33363 states. [2021-11-06 15:28:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33363 to 33254. [2021-11-06 15:28:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33254 states, 32101 states have (on average 1.3981807420329584) internal successors, (44883), 32197 states have internal predecessors, (44883), 672 states have call successors, (672), 480 states have call predecessors, (672), 480 states have return successors, (1680), 672 states have call predecessors, (1680), 672 states have call successors, (1680) [2021-11-06 15:28:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33254 states to 33254 states and 47235 transitions. [2021-11-06 15:28:08,903 INFO L78 Accepts]: Start accepts. Automaton has 33254 states and 47235 transitions. Word has length 157 [2021-11-06 15:28:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:08,904 INFO L470 AbstractCegarLoop]: Abstraction has 33254 states and 47235 transitions. [2021-11-06 15:28:08,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 33254 states and 47235 transitions. [2021-11-06 15:28:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 15:28:08,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:08,931 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:08,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 15:28:09,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 15:28:09,171 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:09,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:09,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1214777006, now seen corresponding path program 1 times [2021-11-06 15:28:09,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:09,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946929520] [2021-11-06 15:28:09,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:09,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 15:28:09,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:09,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946929520] [2021-11-06 15:28:09,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946929520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:09,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:09,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:28:09,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023247570] [2021-11-06 15:28:09,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:28:09,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:09,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:28:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:09,411 INFO L87 Difference]: Start difference. First operand 33254 states and 47235 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:11,733 INFO L93 Difference]: Finished difference Result 66487 states and 94447 transitions. [2021-11-06 15:28:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:28:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-06 15:28:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:11,869 INFO L225 Difference]: With dead ends: 66487 [2021-11-06 15:28:11,869 INFO L226 Difference]: Without dead ends: 31320 [2021-11-06 15:28:11,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:12,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31320 states. [2021-11-06 15:28:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31320 to 31305. [2021-11-06 15:28:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31305 states, 30224 states have (on average 1.3940907887771308) internal successors, (42135), 30314 states have internal predecessors, (42135), 630 states have call successors, (630), 450 states have call predecessors, (630), 450 states have return successors, (1575), 630 states have call predecessors, (1575), 630 states have call successors, (1575) [2021-11-06 15:28:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31305 states to 31305 states and 44340 transitions. [2021-11-06 15:28:13,305 INFO L78 Accepts]: Start accepts. Automaton has 31305 states and 44340 transitions. Word has length 166 [2021-11-06 15:28:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:13,306 INFO L470 AbstractCegarLoop]: Abstraction has 31305 states and 44340 transitions. [2021-11-06 15:28:13,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 31305 states and 44340 transitions. [2021-11-06 15:28:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 15:28:13,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:13,334 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:13,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 15:28:13,334 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:13,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash -539616880, now seen corresponding path program 1 times [2021-11-06 15:28:13,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:13,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912992076] [2021-11-06 15:28:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:13,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 15:28:13,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:13,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912992076] [2021-11-06 15:28:13,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912992076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:13,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:13,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:28:13,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281374207] [2021-11-06 15:28:13,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:28:13,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:28:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:13,419 INFO L87 Difference]: Start difference. First operand 31305 states and 44340 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:15,091 INFO L93 Difference]: Finished difference Result 45841 states and 64973 transitions. [2021-11-06 15:28:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:28:15,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-06 15:28:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:15,143 INFO L225 Difference]: With dead ends: 45841 [2021-11-06 15:28:15,144 INFO L226 Difference]: Without dead ends: 14556 [2021-11-06 15:28:15,181 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14556 states. [2021-11-06 15:28:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14556 to 14556. [2021-11-06 15:28:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14556 states, 14051 states have (on average 1.396697743932816) internal successors, (19625), 14093 states have internal predecessors, (19625), 294 states have call successors, (294), 210 states have call predecessors, (294), 210 states have return successors, (735), 294 states have call predecessors, (735), 294 states have call successors, (735) [2021-11-06 15:28:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14556 states to 14556 states and 20654 transitions. [2021-11-06 15:28:15,776 INFO L78 Accepts]: Start accepts. Automaton has 14556 states and 20654 transitions. Word has length 166 [2021-11-06 15:28:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:15,776 INFO L470 AbstractCegarLoop]: Abstraction has 14556 states and 20654 transitions. [2021-11-06 15:28:15,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 14556 states and 20654 transitions. [2021-11-06 15:28:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 15:28:15,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:15,788 INFO L513 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:15,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 15:28:15,789 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1707328095, now seen corresponding path program 1 times [2021-11-06 15:28:15,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:15,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033234679] [2021-11-06 15:28:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:15,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 15:28:15,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:15,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033234679] [2021-11-06 15:28:15,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033234679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:15,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:15,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:28:15,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978678327] [2021-11-06 15:28:15,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:28:15,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:15,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:28:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:28:15,944 INFO L87 Difference]: Start difference. First operand 14556 states and 20654 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:17,278 INFO L93 Difference]: Finished difference Result 48252 states and 68278 transitions. [2021-11-06 15:28:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:28:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-06 15:28:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:17,407 INFO L225 Difference]: With dead ends: 48252 [2021-11-06 15:28:17,407 INFO L226 Difference]: Without dead ends: 33742 [2021-11-06 15:28:17,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33742 states. [2021-11-06 15:28:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33742 to 14562. [2021-11-06 15:28:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14562 states, 14057 states have (on average 1.3963861421355908) internal successors, (19629), 14099 states have internal predecessors, (19629), 294 states have call successors, (294), 210 states have call predecessors, (294), 210 states have return successors, (735), 294 states have call predecessors, (735), 294 states have call successors, (735) [2021-11-06 15:28:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14562 states to 14562 states and 20658 transitions. [2021-11-06 15:28:18,228 INFO L78 Accepts]: Start accepts. Automaton has 14562 states and 20658 transitions. Word has length 167 [2021-11-06 15:28:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:18,229 INFO L470 AbstractCegarLoop]: Abstraction has 14562 states and 20658 transitions. [2021-11-06 15:28:18,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 14562 states and 20658 transitions. [2021-11-06 15:28:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 15:28:18,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:18,238 INFO L513 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:18,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 15:28:18,238 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:18,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1765377439, now seen corresponding path program 1 times [2021-11-06 15:28:18,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:18,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625041578] [2021-11-06 15:28:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:18,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-06 15:28:18,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:18,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625041578] [2021-11-06 15:28:18,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625041578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:18,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:18,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:28:18,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870641616] [2021-11-06 15:28:18,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:28:18,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:28:18,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:18,315 INFO L87 Difference]: Start difference. First operand 14562 states and 20658 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:19,889 INFO L93 Difference]: Finished difference Result 21573 states and 30613 transitions. [2021-11-06 15:28:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:28:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-06 15:28:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:19,908 INFO L225 Difference]: With dead ends: 21573 [2021-11-06 15:28:19,908 INFO L226 Difference]: Without dead ends: 7057 [2021-11-06 15:28:19,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2021-11-06 15:28:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 6679. [2021-11-06 15:28:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 6462 states have (on average 1.3918291550603528) internal successors, (8994), 6480 states have internal predecessors, (8994), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 9435 transitions. [2021-11-06 15:28:20,247 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 9435 transitions. Word has length 167 [2021-11-06 15:28:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:20,248 INFO L470 AbstractCegarLoop]: Abstraction has 6679 states and 9435 transitions. [2021-11-06 15:28:20,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 9435 transitions. [2021-11-06 15:28:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-06 15:28:20,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:20,258 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:20,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 15:28:20,259 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1102000842, now seen corresponding path program 1 times [2021-11-06 15:28:20,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:20,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525710485] [2021-11-06 15:28:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:20,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-06 15:28:20,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:20,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525710485] [2021-11-06 15:28:20,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525710485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:20,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:20,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:28:20,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719713940] [2021-11-06 15:28:20,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:28:20,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:28:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:28:20,459 INFO L87 Difference]: Start difference. First operand 6679 states and 9435 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:21,106 INFO L93 Difference]: Finished difference Result 15929 states and 22400 transitions. [2021-11-06 15:28:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:28:21,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-11-06 15:28:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:21,126 INFO L225 Difference]: With dead ends: 15929 [2021-11-06 15:28:21,127 INFO L226 Difference]: Without dead ends: 9264 [2021-11-06 15:28:21,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9264 states. [2021-11-06 15:28:21,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9264 to 6679. [2021-11-06 15:28:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 6462 states have (on average 1.389353141442278) internal successors, (8978), 6480 states have internal predecessors, (8978), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 9419 transitions. [2021-11-06 15:28:21,461 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 9419 transitions. Word has length 181 [2021-11-06 15:28:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:21,461 INFO L470 AbstractCegarLoop]: Abstraction has 6679 states and 9419 transitions. [2021-11-06 15:28:21,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 9419 transitions. [2021-11-06 15:28:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-06 15:28:21,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:21,469 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:21,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 15:28:21,470 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:21,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1109016410, now seen corresponding path program 1 times [2021-11-06 15:28:21,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:21,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714522894] [2021-11-06 15:28:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:21,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-06 15:28:21,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:21,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714522894] [2021-11-06 15:28:21,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714522894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:21,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:21,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:28:21,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716408982] [2021-11-06 15:28:21,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:28:21,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:21,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:28:21,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:21,631 INFO L87 Difference]: Start difference. First operand 6679 states and 9419 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:22,110 INFO L93 Difference]: Finished difference Result 15951 states and 22488 transitions. [2021-11-06 15:28:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:28:22,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-11-06 15:28:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:22,131 INFO L225 Difference]: With dead ends: 15951 [2021-11-06 15:28:22,131 INFO L226 Difference]: Without dead ends: 9318 [2021-11-06 15:28:22,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2021-11-06 15:28:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 6967. [2021-11-06 15:28:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6967 states, 6750 states have (on average 1.401185185185185) internal successors, (9458), 6768 states have internal predecessors, (9458), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 9899 transitions. [2021-11-06 15:28:22,434 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 9899 transitions. Word has length 183 [2021-11-06 15:28:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:22,434 INFO L470 AbstractCegarLoop]: Abstraction has 6967 states and 9899 transitions. [2021-11-06 15:28:22,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 9899 transitions. [2021-11-06 15:28:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-06 15:28:22,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:22,445 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:22,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 15:28:22,446 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:22,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash 800081427, now seen corresponding path program 1 times [2021-11-06 15:28:22,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:22,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271619665] [2021-11-06 15:28:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:22,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-06 15:28:22,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:22,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271619665] [2021-11-06 15:28:22,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271619665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:22,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:22,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:28:22,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429862296] [2021-11-06 15:28:22,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:28:22,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:22,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:28:22,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:22,614 INFO L87 Difference]: Start difference. First operand 6967 states and 9899 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:23,770 INFO L93 Difference]: Finished difference Result 26121 states and 36580 transitions. [2021-11-06 15:28:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:28:23,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-11-06 15:28:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:23,818 INFO L225 Difference]: With dead ends: 26121 [2021-11-06 15:28:23,818 INFO L226 Difference]: Without dead ends: 19200 [2021-11-06 15:28:23,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:28:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19200 states. [2021-11-06 15:28:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19200 to 7015. [2021-11-06 15:28:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7015 states, 6798 states have (on average 1.3983524566048837) internal successors, (9506), 6816 states have internal predecessors, (9506), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7015 states to 7015 states and 9947 transitions. [2021-11-06 15:28:24,245 INFO L78 Accepts]: Start accepts. Automaton has 7015 states and 9947 transitions. Word has length 190 [2021-11-06 15:28:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:24,246 INFO L470 AbstractCegarLoop]: Abstraction has 7015 states and 9947 transitions. [2021-11-06 15:28:24,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7015 states and 9947 transitions. [2021-11-06 15:28:24,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-06 15:28:24,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:24,255 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:24,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 15:28:24,255 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1167047319, now seen corresponding path program 1 times [2021-11-06 15:28:24,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:24,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875083452] [2021-11-06 15:28:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:24,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-06 15:28:24,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:24,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875083452] [2021-11-06 15:28:24,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875083452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:24,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:24,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:28:24,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879053230] [2021-11-06 15:28:24,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:28:24,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:28:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:24,430 INFO L87 Difference]: Start difference. First operand 7015 states and 9947 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:25,944 INFO L93 Difference]: Finished difference Result 26361 states and 36936 transitions. [2021-11-06 15:28:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:28:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-11-06 15:28:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:26,000 INFO L225 Difference]: With dead ends: 26361 [2021-11-06 15:28:26,001 INFO L226 Difference]: Without dead ends: 19392 [2021-11-06 15:28:26,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:28:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19392 states. [2021-11-06 15:28:26,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19392 to 7063. [2021-11-06 15:28:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 6846 states have (on average 1.3955594507741746) internal successors, (9554), 6864 states have internal predecessors, (9554), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9995 transitions. [2021-11-06 15:28:26,585 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9995 transitions. Word has length 192 [2021-11-06 15:28:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:26,586 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9995 transitions. [2021-11-06 15:28:26,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9995 transitions. [2021-11-06 15:28:26,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-06 15:28:26,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:26,593 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:26,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 15:28:26,593 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1960041381, now seen corresponding path program 1 times [2021-11-06 15:28:26,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:26,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403864408] [2021-11-06 15:28:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:26,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-06 15:28:26,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:26,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403864408] [2021-11-06 15:28:26,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403864408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:26,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:26,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:28:26,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591723882] [2021-11-06 15:28:26,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:28:26,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:28:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:28:26,899 INFO L87 Difference]: Start difference. First operand 7063 states and 9995 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:28,056 INFO L93 Difference]: Finished difference Result 20419 states and 28798 transitions. [2021-11-06 15:28:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:28:28,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-11-06 15:28:28,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:28,086 INFO L225 Difference]: With dead ends: 20419 [2021-11-06 15:28:28,086 INFO L226 Difference]: Without dead ends: 13402 [2021-11-06 15:28:28,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13402 states. [2021-11-06 15:28:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13402 to 7135. [2021-11-06 15:28:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 6918 states have (on average 1.3940445215380168) internal successors, (9644), 6936 states have internal predecessors, (9644), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 10085 transitions. [2021-11-06 15:28:28,492 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 10085 transitions. Word has length 194 [2021-11-06 15:28:28,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:28,492 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 10085 transitions. [2021-11-06 15:28:28,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:28,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 10085 transitions. [2021-11-06 15:28:28,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-06 15:28:28,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:28,499 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:28,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 15:28:28,500 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:28,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:28,500 INFO L85 PathProgramCache]: Analyzing trace with hash -201007369, now seen corresponding path program 1 times [2021-11-06 15:28:28,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:28,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032414779] [2021-11-06 15:28:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:28,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-06 15:28:28,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:28,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032414779] [2021-11-06 15:28:28,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032414779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:28,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:28,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:28:28,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408618055] [2021-11-06 15:28:28,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:28:28,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:28:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:28,711 INFO L87 Difference]: Start difference. First operand 7135 states and 10085 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:29,014 INFO L93 Difference]: Finished difference Result 14256 states and 20157 transitions. [2021-11-06 15:28:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:28:29,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-11-06 15:28:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:29,029 INFO L225 Difference]: With dead ends: 14256 [2021-11-06 15:28:29,030 INFO L226 Difference]: Without dead ends: 7137 [2021-11-06 15:28:29,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7137 states. [2021-11-06 15:28:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7137 to 7137. [2021-11-06 15:28:29,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7137 states, 6920 states have (on average 1.3939306358381502) internal successors, (9646), 6938 states have internal predecessors, (9646), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7137 states to 7137 states and 10087 transitions. [2021-11-06 15:28:29,360 INFO L78 Accepts]: Start accepts. Automaton has 7137 states and 10087 transitions. Word has length 196 [2021-11-06 15:28:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:29,361 INFO L470 AbstractCegarLoop]: Abstraction has 7137 states and 10087 transitions. [2021-11-06 15:28:29,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7137 states and 10087 transitions. [2021-11-06 15:28:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-06 15:28:29,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:29,366 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:29,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 15:28:29,367 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:29,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:29,367 INFO L85 PathProgramCache]: Analyzing trace with hash 264994457, now seen corresponding path program 1 times [2021-11-06 15:28:29,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:29,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585034875] [2021-11-06 15:28:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:29,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-06 15:28:29,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:29,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585034875] [2021-11-06 15:28:29,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585034875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:29,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082352355] [2021-11-06 15:28:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:29,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:29,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:29,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:29,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:28:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:30,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 15:28:30,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:28:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-06 15:28:30,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082352355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:30,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:28:30,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 15:28:30,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456210788] [2021-11-06 15:28:30,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:28:30,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:30,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:28:30,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:28:30,474 INFO L87 Difference]: Start difference. First operand 7137 states and 10087 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:31,840 INFO L93 Difference]: Finished difference Result 17913 states and 25273 transitions. [2021-11-06 15:28:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:28:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2021-11-06 15:28:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:31,863 INFO L225 Difference]: With dead ends: 17913 [2021-11-06 15:28:31,863 INFO L226 Difference]: Without dead ends: 10824 [2021-11-06 15:28:31,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:28:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10824 states. [2021-11-06 15:28:32,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10824 to 7173. [2021-11-06 15:28:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 6956 states have (on average 1.3918918918918919) internal successors, (9682), 6974 states have internal predecessors, (9682), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10123 transitions. [2021-11-06 15:28:32,251 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10123 transitions. Word has length 198 [2021-11-06 15:28:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:32,252 INFO L470 AbstractCegarLoop]: Abstraction has 7173 states and 10123 transitions. [2021-11-06 15:28:32,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10123 transitions. [2021-11-06 15:28:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-06 15:28:32,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:32,258 INFO L513 BasicCegarLoop]: trace histogram [8, 6, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:32,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 15:28:32,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-06 15:28:32,476 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash -716113708, now seen corresponding path program 1 times [2021-11-06 15:28:32,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:32,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058811498] [2021-11-06 15:28:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:32,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-06 15:28:32,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:32,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058811498] [2021-11-06 15:28:32,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058811498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:28:32,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:28:32,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:28:32,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293649482] [2021-11-06 15:28:32,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:28:32,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:28:32,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:32,599 INFO L87 Difference]: Start difference. First operand 7173 states and 10123 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:33,698 INFO L93 Difference]: Finished difference Result 14494 states and 20426 transitions. [2021-11-06 15:28:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:28:33,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-06 15:28:33,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:33,734 INFO L225 Difference]: With dead ends: 14494 [2021-11-06 15:28:33,734 INFO L226 Difference]: Without dead ends: 7369 [2021-11-06 15:28:33,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:28:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2021-11-06 15:28:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7173. [2021-11-06 15:28:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 6956 states have (on average 1.3824036802760207) internal successors, (9616), 6974 states have internal predecessors, (9616), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10057 transitions. [2021-11-06 15:28:34,193 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10057 transitions. Word has length 201 [2021-11-06 15:28:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:34,193 INFO L470 AbstractCegarLoop]: Abstraction has 7173 states and 10057 transitions. [2021-11-06 15:28:34,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10057 transitions. [2021-11-06 15:28:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-06 15:28:34,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:34,199 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:34,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 15:28:34,200 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:34,200 INFO L85 PathProgramCache]: Analyzing trace with hash -199172192, now seen corresponding path program 1 times [2021-11-06 15:28:34,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:34,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421260595] [2021-11-06 15:28:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:34,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-06 15:28:34,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:34,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421260595] [2021-11-06 15:28:34,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421260595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:34,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036170821] [2021-11-06 15:28:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:34,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:34,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:34,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 15:28:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:37,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2262 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 15:28:37,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:28:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-06 15:28:37,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036170821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:37,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:28:37,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 15:28:37,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324220913] [2021-11-06 15:28:37,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:28:37,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:28:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:37,636 INFO L87 Difference]: Start difference. First operand 7173 states and 10057 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:38,059 INFO L93 Difference]: Finished difference Result 14331 states and 20100 transitions. [2021-11-06 15:28:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:28:38,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-11-06 15:28:38,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:38,074 INFO L225 Difference]: With dead ends: 14331 [2021-11-06 15:28:38,075 INFO L226 Difference]: Without dead ends: 7175 [2021-11-06 15:28:38,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:28:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2021-11-06 15:28:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 7175. [2021-11-06 15:28:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7175 states, 6958 states have (on average 1.3822937625754528) internal successors, (9618), 6976 states have internal predecessors, (9618), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10059 transitions. [2021-11-06 15:28:38,441 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10059 transitions. Word has length 202 [2021-11-06 15:28:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:38,441 INFO L470 AbstractCegarLoop]: Abstraction has 7175 states and 10059 transitions. [2021-11-06 15:28:38,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10059 transitions. [2021-11-06 15:28:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-06 15:28:38,447 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:38,447 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:38,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 15:28:38,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:38,664 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1302831230, now seen corresponding path program 2 times [2021-11-06 15:28:38,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:38,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850108929] [2021-11-06 15:28:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:38,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-06 15:28:38,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:38,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850108929] [2021-11-06 15:28:38,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850108929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:38,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195289508] [2021-11-06 15:28:38,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:28:38,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:38,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:38,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:38,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 15:28:41,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 15:28:41,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:28:41,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-06 15:28:41,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:28:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-06 15:28:42,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195289508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:42,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:28:42,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 15:28:42,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109299707] [2021-11-06 15:28:42,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:28:42,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:28:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:28:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:28:42,358 INFO L87 Difference]: Start difference. First operand 7175 states and 10059 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:28:42,870 INFO L93 Difference]: Finished difference Result 14334 states and 20103 transitions. [2021-11-06 15:28:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:28:42,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-11-06 15:28:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:28:42,890 INFO L225 Difference]: With dead ends: 14334 [2021-11-06 15:28:42,891 INFO L226 Difference]: Without dead ends: 7177 [2021-11-06 15:28:42,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:28:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7177 states. [2021-11-06 15:28:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7177 to 7177. [2021-11-06 15:28:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7177 states, 6960 states have (on average 1.382183908045977) internal successors, (9620), 6978 states have internal predecessors, (9620), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:28:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 10061 transitions. [2021-11-06 15:28:43,317 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 10061 transitions. Word has length 204 [2021-11-06 15:28:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:28:43,317 INFO L470 AbstractCegarLoop]: Abstraction has 7177 states and 10061 transitions. [2021-11-06 15:28:43,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:28:43,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 10061 transitions. [2021-11-06 15:28:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-06 15:28:43,324 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:28:43,324 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:28:43,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 15:28:43,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-06 15:28:43,535 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:28:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:28:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1727796896, now seen corresponding path program 3 times [2021-11-06 15:28:43,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:28:43,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979576270] [2021-11-06 15:28:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:28:43,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:28:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:28:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-06 15:28:43,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:28:43,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979576270] [2021-11-06 15:28:43,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979576270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:28:43,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615058157] [2021-11-06 15:28:43,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 15:28:43,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:28:43,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:28:43,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:28:43,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 15:29:28,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-06 15:29:28,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:29:28,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-06 15:29:28,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:29:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-06 15:29:29,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615058157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:29:29,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:29:29,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-06 15:29:29,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72442224] [2021-11-06 15:29:29,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 15:29:29,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:29,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 15:29:29,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:29:29,288 INFO L87 Difference]: Start difference. First operand 7177 states and 10061 transitions. Second operand has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:29,703 INFO L93 Difference]: Finished difference Result 14337 states and 20106 transitions. [2021-11-06 15:29:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 15:29:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2021-11-06 15:29:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:29,719 INFO L225 Difference]: With dead ends: 14337 [2021-11-06 15:29:29,720 INFO L226 Difference]: Without dead ends: 7179 [2021-11-06 15:29:29,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:29:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7179 states. [2021-11-06 15:29:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7179 to 7179. [2021-11-06 15:29:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 6962 states have (on average 1.3820741166331514) internal successors, (9622), 6980 states have internal predecessors, (9622), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:29:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10063 transitions. [2021-11-06 15:29:30,253 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10063 transitions. Word has length 206 [2021-11-06 15:29:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:30,254 INFO L470 AbstractCegarLoop]: Abstraction has 7179 states and 10063 transitions. [2021-11-06 15:29:30,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.444444444444443) internal successors, (175), 9 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10063 transitions. [2021-11-06 15:29:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-06 15:29:30,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:30,279 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:29:30,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 15:29:30,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:29:30,508 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:29:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1172287486, now seen corresponding path program 4 times [2021-11-06 15:29:30,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:30,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629708734] [2021-11-06 15:29:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:30,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:29:30,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:30,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629708734] [2021-11-06 15:29:30,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629708734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:29:30,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19575193] [2021-11-06 15:29:30,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-06 15:29:30,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:29:30,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:29:30,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:29:30,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 15:29:35,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-06 15:29:35,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:29:35,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-06 15:29:35,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:29:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-06 15:29:35,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19575193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:35,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:29:35,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2021-11-06 15:29:35,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40862793] [2021-11-06 15:29:35,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 15:29:35,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 15:29:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-06 15:29:35,923 INFO L87 Difference]: Start difference. First operand 7179 states and 10063 transitions. Second operand has 10 states, 10 states have (on average 18.1) internal successors, (181), 10 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:44,966 INFO L93 Difference]: Finished difference Result 60537 states and 83248 transitions. [2021-11-06 15:29:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-06 15:29:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.1) internal successors, (181), 10 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-11-06 15:29:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:45,075 INFO L225 Difference]: With dead ends: 60537 [2021-11-06 15:29:45,075 INFO L226 Difference]: Without dead ends: 53412 [2021-11-06 15:29:45,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6056 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2179, Invalid=13073, Unknown=0, NotChecked=0, Total=15252 [2021-11-06 15:29:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53412 states. [2021-11-06 15:29:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53412 to 7044. [2021-11-06 15:29:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7044 states, 6827 states have (on average 1.3817196425955764) internal successors, (9433), 6845 states have internal predecessors, (9433), 126 states have call successors, (126), 90 states have call predecessors, (126), 90 states have return successors, (315), 126 states have call predecessors, (315), 126 states have call successors, (315) [2021-11-06 15:29:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7044 states to 7044 states and 9874 transitions. [2021-11-06 15:29:45,878 INFO L78 Accepts]: Start accepts. Automaton has 7044 states and 9874 transitions. Word has length 208 [2021-11-06 15:29:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:45,889 INFO L470 AbstractCegarLoop]: Abstraction has 7044 states and 9874 transitions. [2021-11-06 15:29:45,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.1) internal successors, (181), 10 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:29:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7044 states and 9874 transitions. [2021-11-06 15:29:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-06 15:29:45,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:45,899 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:29:45,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 15:29:46,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:29:46,105 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:29:46,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:46,105 INFO L85 PathProgramCache]: Analyzing trace with hash -938313857, now seen corresponding path program 1 times [2021-11-06 15:29:46,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:46,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075272760] [2021-11-06 15:29:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:46,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:29:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:29:46,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:46,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075272760] [2021-11-06 15:29:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075272760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:46,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:46,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876046436] [2021-11-06 15:29:46,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:46,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:46,322 INFO L87 Difference]: Start difference. First operand 7044 states and 9874 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:29:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:48,837 INFO L93 Difference]: Finished difference Result 14250 states and 20368 transitions. [2021-11-06 15:29:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-11-06 15:29:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:48,861 INFO L225 Difference]: With dead ends: 14250 [2021-11-06 15:29:48,862 INFO L226 Difference]: Without dead ends: 7260 [2021-11-06 15:29:48,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7260 states. [2021-11-06 15:29:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7260 to 7152. [2021-11-06 15:29:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7152 states, 6899 states have (on average 1.3768662124945645) internal successors, (9499), 6941 states have internal predecessors, (9499), 126 states have call successors, (126), 90 states have call predecessors, (126), 126 states have return successors, (366), 138 states have call predecessors, (366), 126 states have call successors, (366) [2021-11-06 15:29:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9991 transitions. [2021-11-06 15:29:49,389 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9991 transitions. Word has length 223 [2021-11-06 15:29:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:49,389 INFO L470 AbstractCegarLoop]: Abstraction has 7152 states and 9991 transitions. [2021-11-06 15:29:49,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:29:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9991 transitions. [2021-11-06 15:29:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-06 15:29:49,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:49,398 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:29:49,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-06 15:29:49,399 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:29:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 132669381, now seen corresponding path program 1 times [2021-11-06 15:29:49,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:49,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622674164] [2021-11-06 15:29:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:49,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:29:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:29:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:29:49,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:29:49,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622674164] [2021-11-06 15:29:49,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622674164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:29:49,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:29:49,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:29:49,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175307994] [2021-11-06 15:29:49,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:29:49,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:29:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:29:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:49,534 INFO L87 Difference]: Start difference. First operand 7152 states and 9991 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:29:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:29:52,126 INFO L93 Difference]: Finished difference Result 13980 states and 19819 transitions. [2021-11-06 15:29:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:29:52,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 228 [2021-11-06 15:29:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:29:52,144 INFO L225 Difference]: With dead ends: 13980 [2021-11-06 15:29:52,145 INFO L226 Difference]: Without dead ends: 6882 [2021-11-06 15:29:52,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:29:52,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6882 states. [2021-11-06 15:29:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6882 to 6774. [2021-11-06 15:29:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6774 states, 6521 states have (on average 1.3490262229719368) internal successors, (8797), 6563 states have internal predecessors, (8797), 126 states have call successors, (126), 90 states have call predecessors, (126), 126 states have return successors, (366), 138 states have call predecessors, (366), 126 states have call successors, (366) [2021-11-06 15:29:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 9289 transitions. [2021-11-06 15:29:52,631 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 9289 transitions. Word has length 228 [2021-11-06 15:29:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:29:52,631 INFO L470 AbstractCegarLoop]: Abstraction has 6774 states and 9289 transitions. [2021-11-06 15:29:52,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:29:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 9289 transitions. [2021-11-06 15:29:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 15:29:52,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:29:52,638 INFO L513 BasicCegarLoop]: trace histogram [9, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:29:52,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-06 15:29:52,639 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:29:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:29:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1190541775, now seen corresponding path program 1 times [2021-11-06 15:29:52,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:29:52,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689820847] [2021-11-06 15:29:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:29:52,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:29:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 80 proven. 43 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-06 15:31:43,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:43,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689820847] [2021-11-06 15:31:43,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689820847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:31:43,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257395370] [2021-11-06 15:31:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:43,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:31:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:31:43,839 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:31:43,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 15:31:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:44,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2400 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 15:31:44,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:31:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-06 15:31:45,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257395370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:45,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:31:45,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [34] total 36 [2021-11-06 15:31:45,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540620870] [2021-11-06 15:31:45,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:31:45,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:31:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1084, Unknown=4, NotChecked=0, Total=1260 [2021-11-06 15:31:45,261 INFO L87 Difference]: Start difference. First operand 6774 states and 9289 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:31:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:31:46,756 INFO L93 Difference]: Finished difference Result 20123 states and 27641 transitions. [2021-11-06 15:31:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:31:46,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-11-06 15:31:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:31:46,789 INFO L225 Difference]: With dead ends: 20123 [2021-11-06 15:31:46,789 INFO L226 Difference]: Without dead ends: 13403 [2021-11-06 15:31:46,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=176, Invalid=1152, Unknown=4, NotChecked=0, Total=1332 [2021-11-06 15:31:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13403 states. [2021-11-06 15:31:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13403 to 10984. [2021-11-06 15:31:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10984 states, 10560 states have (on average 1.3556818181818182) internal successors, (14316), 10632 states have internal predecessors, (14316), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:31:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10984 states to 10984 states and 15117 transitions. [2021-11-06 15:31:47,549 INFO L78 Accepts]: Start accepts. Automaton has 10984 states and 15117 transitions. Word has length 229 [2021-11-06 15:31:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:31:47,549 INFO L470 AbstractCegarLoop]: Abstraction has 10984 states and 15117 transitions. [2021-11-06 15:31:47,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:31:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 10984 states and 15117 transitions. [2021-11-06 15:31:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-06 15:31:47,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:31:47,557 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:31:47,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 15:31:47,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:31:47,764 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:31:47,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:31:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1813677093, now seen corresponding path program 1 times [2021-11-06 15:31:47,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:31:47,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697888323] [2021-11-06 15:31:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:47,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:31:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:31:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:31:47,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:47,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697888323] [2021-11-06 15:31:47,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697888323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:47,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:31:47,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:31:47,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281246810] [2021-11-06 15:31:47,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:31:47,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:31:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:31:47,920 INFO L87 Difference]: Start difference. First operand 10984 states and 15117 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:31:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:31:51,059 INFO L93 Difference]: Finished difference Result 21995 states and 30923 transitions. [2021-11-06 15:31:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:31:51,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 230 [2021-11-06 15:31:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:31:51,125 INFO L225 Difference]: With dead ends: 21995 [2021-11-06 15:31:51,125 INFO L226 Difference]: Without dead ends: 11065 [2021-11-06 15:31:51,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:31:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-11-06 15:31:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 10894. [2021-11-06 15:31:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10894 states, 10470 states have (on average 1.3530085959885387) internal successors, (14166), 10542 states have internal predecessors, (14166), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:31:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10894 states to 10894 states and 14967 transitions. [2021-11-06 15:31:51,887 INFO L78 Accepts]: Start accepts. Automaton has 10894 states and 14967 transitions. Word has length 230 [2021-11-06 15:31:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:31:51,888 INFO L470 AbstractCegarLoop]: Abstraction has 10894 states and 14967 transitions. [2021-11-06 15:31:51,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:31:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 10894 states and 14967 transitions. [2021-11-06 15:31:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-06 15:31:51,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:31:51,896 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:31:51,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-06 15:31:51,896 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:31:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:31:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1907655395, now seen corresponding path program 1 times [2021-11-06 15:31:51,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:31:51,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51850129] [2021-11-06 15:31:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:51,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:31:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:31:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:31:52,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:52,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51850129] [2021-11-06 15:31:52,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51850129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:52,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:31:52,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:31:52,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191880475] [2021-11-06 15:31:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:31:52,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:31:52,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:31:52,019 INFO L87 Difference]: Start difference. First operand 10894 states and 14967 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:31:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:31:55,280 INFO L93 Difference]: Finished difference Result 21935 states and 30773 transitions. [2021-11-06 15:31:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:31:55,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 230 [2021-11-06 15:31:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:31:55,304 INFO L225 Difference]: With dead ends: 21935 [2021-11-06 15:31:55,305 INFO L226 Difference]: Without dead ends: 11095 [2021-11-06 15:31:55,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:31:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11095 states. [2021-11-06 15:31:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11095 to 10894. [2021-11-06 15:31:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10894 states, 10470 states have (on average 1.3444126074498568) internal successors, (14076), 10542 states have internal predecessors, (14076), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:31:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10894 states to 10894 states and 14877 transitions. [2021-11-06 15:31:56,289 INFO L78 Accepts]: Start accepts. Automaton has 10894 states and 14877 transitions. Word has length 230 [2021-11-06 15:31:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:31:56,289 INFO L470 AbstractCegarLoop]: Abstraction has 10894 states and 14877 transitions. [2021-11-06 15:31:56,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:31:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 10894 states and 14877 transitions. [2021-11-06 15:31:56,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-06 15:31:56,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:31:56,299 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:31:56,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-06 15:31:56,300 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:31:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:31:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash 278461320, now seen corresponding path program 1 times [2021-11-06 15:31:56,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:31:56,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088292799] [2021-11-06 15:31:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:31:56,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:31:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:31:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:31:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-06 15:31:56,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:31:56,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088292799] [2021-11-06 15:31:56,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088292799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:31:56,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:31:56,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:31:56,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919944645] [2021-11-06 15:31:56,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:31:56,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:31:56,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:31:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:31:56,431 INFO L87 Difference]: Start difference. First operand 10894 states and 14877 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:31:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:31:59,923 INFO L93 Difference]: Finished difference Result 23259 states and 31804 transitions. [2021-11-06 15:31:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:31:59,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 232 [2021-11-06 15:31:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:31:59,954 INFO L225 Difference]: With dead ends: 23259 [2021-11-06 15:31:59,954 INFO L226 Difference]: Without dead ends: 12419 [2021-11-06 15:31:59,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:31:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2021-11-06 15:32:00,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 10840. [2021-11-06 15:32:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10840 states, 10416 states have (on average 1.3438940092165899) internal successors, (13998), 10488 states have internal predecessors, (13998), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:32:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10840 states to 10840 states and 14799 transitions. [2021-11-06 15:32:00,739 INFO L78 Accepts]: Start accepts. Automaton has 10840 states and 14799 transitions. Word has length 232 [2021-11-06 15:32:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:00,740 INFO L470 AbstractCegarLoop]: Abstraction has 10840 states and 14799 transitions. [2021-11-06 15:32:00,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:32:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 10840 states and 14799 transitions. [2021-11-06 15:32:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-06 15:32:00,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:00,751 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:00,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-06 15:32:00,751 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1181777054, now seen corresponding path program 1 times [2021-11-06 15:32:00,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:00,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073306547] [2021-11-06 15:32:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:00,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:32:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-06 15:32:01,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:01,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073306547] [2021-11-06 15:32:01,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073306547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:32:01,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:32:01,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 15:32:01,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047315872] [2021-11-06 15:32:01,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 15:32:01,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 15:32:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:32:01,082 INFO L87 Difference]: Start difference. First operand 10840 states and 14799 transitions. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 7 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:32:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:04,818 INFO L93 Difference]: Finished difference Result 22487 states and 31547 transitions. [2021-11-06 15:32:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 15:32:04,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 7 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 242 [2021-11-06 15:32:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:04,846 INFO L225 Difference]: With dead ends: 22487 [2021-11-06 15:32:04,846 INFO L226 Difference]: Without dead ends: 11701 [2021-11-06 15:32:04,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-06 15:32:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11701 states. [2021-11-06 15:32:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11701 to 11020. [2021-11-06 15:32:05,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11020 states, 10596 states have (on average 1.338052095130238) internal successors, (14178), 10668 states have internal predecessors, (14178), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:32:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11020 states to 11020 states and 14979 transitions. [2021-11-06 15:32:05,634 INFO L78 Accepts]: Start accepts. Automaton has 11020 states and 14979 transitions. Word has length 242 [2021-11-06 15:32:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:05,636 INFO L470 AbstractCegarLoop]: Abstraction has 11020 states and 14979 transitions. [2021-11-06 15:32:05,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 7 states have internal predecessors, (213), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 15:32:05,636 INFO L276 IsEmpty]: Start isEmpty. Operand 11020 states and 14979 transitions. [2021-11-06 15:32:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-06 15:32:05,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:05,647 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:05,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-06 15:32:05,648 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1327889314, now seen corresponding path program 1 times [2021-11-06 15:32:05,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:05,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544133743] [2021-11-06 15:32:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:05,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:32:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:32:05,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:05,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544133743] [2021-11-06 15:32:05,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544133743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:32:05,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353022228] [2021-11-06 15:32:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:05,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:32:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:32:05,968 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:32:05,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 15:32:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:09,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 15:32:09,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:32:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:32:10,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353022228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:32:10,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:32:10,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2021-11-06 15:32:10,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205864357] [2021-11-06 15:32:10,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 15:32:10,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:10,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 15:32:10,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:32:10,988 INFO L87 Difference]: Start difference. First operand 11020 states and 14979 transitions. Second operand has 10 states, 10 states have (on average 27.2) internal successors, (272), 9 states have internal predecessors, (272), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:32:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:18,649 INFO L93 Difference]: Finished difference Result 24999 states and 34071 transitions. [2021-11-06 15:32:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:32:18,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.2) internal successors, (272), 9 states have internal predecessors, (272), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 242 [2021-11-06 15:32:18,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:18,680 INFO L225 Difference]: With dead ends: 24999 [2021-11-06 15:32:18,680 INFO L226 Difference]: Without dead ends: 14033 [2021-11-06 15:32:18,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-06 15:32:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14033 states. [2021-11-06 15:32:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14033 to 11167. [2021-11-06 15:32:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11167 states, 10743 states have (on average 1.3361258493903008) internal successors, (14354), 10815 states have internal predecessors, (14354), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:32:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11167 states to 11167 states and 15155 transitions. [2021-11-06 15:32:19,560 INFO L78 Accepts]: Start accepts. Automaton has 11167 states and 15155 transitions. Word has length 242 [2021-11-06 15:32:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:19,560 INFO L470 AbstractCegarLoop]: Abstraction has 11167 states and 15155 transitions. [2021-11-06 15:32:19,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.2) internal successors, (272), 9 states have internal predecessors, (272), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:32:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 11167 states and 15155 transitions. [2021-11-06 15:32:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-06 15:32:19,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:19,573 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:19,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 15:32:19,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-06 15:32:19,792 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:19,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash 447330917, now seen corresponding path program 2 times [2021-11-06 15:32:19,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:19,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053422112] [2021-11-06 15:32:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:19,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:32:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:32:20,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:20,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053422112] [2021-11-06 15:32:20,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053422112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:32:20,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105032530] [2021-11-06 15:32:20,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 15:32:20,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:32:20,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:32:20,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:32:20,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 15:32:27,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 15:32:27,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:32:27,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 15:32:27,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:32:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:32:28,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105032530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:32:28,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:32:28,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2021-11-06 15:32:28,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436741472] [2021-11-06 15:32:28,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 15:32:28,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:32:28,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 15:32:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-06 15:32:28,697 INFO L87 Difference]: Start difference. First operand 11167 states and 15155 transitions. Second operand has 11 states, 11 states have (on average 25.363636363636363) internal successors, (279), 10 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:32:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:32:33,015 INFO L93 Difference]: Finished difference Result 22724 states and 30895 transitions. [2021-11-06 15:32:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:32:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 25.363636363636363) internal successors, (279), 10 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 246 [2021-11-06 15:32:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:32:33,039 INFO L225 Difference]: With dead ends: 22724 [2021-11-06 15:32:33,039 INFO L226 Difference]: Without dead ends: 11611 [2021-11-06 15:32:33,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-06 15:32:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11611 states. [2021-11-06 15:32:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11611 to 11314. [2021-11-06 15:32:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11314 states, 10890 states have (on average 1.3342516069788797) internal successors, (14530), 10962 states have internal predecessors, (14530), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:32:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11314 states to 11314 states and 15331 transitions. [2021-11-06 15:32:33,890 INFO L78 Accepts]: Start accepts. Automaton has 11314 states and 15331 transitions. Word has length 246 [2021-11-06 15:32:33,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:32:33,891 INFO L470 AbstractCegarLoop]: Abstraction has 11314 states and 15331 transitions. [2021-11-06 15:32:33,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.363636363636363) internal successors, (279), 10 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:32:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 11314 states and 15331 transitions. [2021-11-06 15:32:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-06 15:32:33,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:32:33,903 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:32:33,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 15:32:34,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-06 15:32:34,121 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:32:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:32:34,121 INFO L85 PathProgramCache]: Analyzing trace with hash 168891628, now seen corresponding path program 3 times [2021-11-06 15:32:34,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:32:34,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866416979] [2021-11-06 15:32:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:32:34,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:32:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:34,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:32:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:32:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 42 proven. 15 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:32:34,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:32:34,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866416979] [2021-11-06 15:32:34,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866416979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:32:34,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035743875] [2021-11-06 15:32:34,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 15:32:34,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:32:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:32:34,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:32:34,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 15:38:33,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-06 15:38:33,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:38:33,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 15:38:33,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:38:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 42 proven. 15 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:38:34,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035743875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:38:34,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:38:34,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2021-11-06 15:38:34,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014607664] [2021-11-06 15:38:34,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 15:38:34,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:38:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 15:38:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-06 15:38:34,756 INFO L87 Difference]: Start difference. First operand 11314 states and 15331 transitions. Second operand has 13 states, 13 states have (on average 22.076923076923077) internal successors, (287), 12 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:38:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:38:42,205 INFO L93 Difference]: Finished difference Result 23018 states and 31247 transitions. [2021-11-06 15:38:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 15:38:42,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.076923076923077) internal successors, (287), 12 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 250 [2021-11-06 15:38:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:38:42,235 INFO L225 Difference]: With dead ends: 23018 [2021-11-06 15:38:42,235 INFO L226 Difference]: Without dead ends: 11758 [2021-11-06 15:38:42,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-06 15:38:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11758 states. [2021-11-06 15:38:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11758 to 11461. [2021-11-06 15:38:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11461 states, 11037 states have (on average 1.3324272900244631) internal successors, (14706), 11109 states have internal predecessors, (14706), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:38:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11461 states to 11461 states and 15507 transitions. [2021-11-06 15:38:43,251 INFO L78 Accepts]: Start accepts. Automaton has 11461 states and 15507 transitions. Word has length 250 [2021-11-06 15:38:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:38:43,251 INFO L470 AbstractCegarLoop]: Abstraction has 11461 states and 15507 transitions. [2021-11-06 15:38:43,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.076923076923077) internal successors, (287), 12 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:38:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 11461 states and 15507 transitions. [2021-11-06 15:38:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-06 15:38:43,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:38:43,264 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:38:43,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 15:38:43,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-06 15:38:43,480 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:38:43,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:38:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash -374746125, now seen corresponding path program 4 times [2021-11-06 15:38:43,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:38:43,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817123300] [2021-11-06 15:38:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:38:43,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:38:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:38:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:38:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:38:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 42 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:38:43,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:38:43,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817123300] [2021-11-06 15:38:43,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817123300] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:38:43,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329980258] [2021-11-06 15:38:43,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-06 15:38:43,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:38:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:38:43,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:38:43,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 15:38:50,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-06 15:38:50,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 15:38:50,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 15:38:50,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:38:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 42 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:38:51,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329980258] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:38:51,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 15:38:51,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2021-11-06 15:38:51,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887637381] [2021-11-06 15:38:51,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 15:38:51,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:38:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 15:38:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-11-06 15:38:51,532 INFO L87 Difference]: Start difference. First operand 11461 states and 15507 transitions. Second operand has 15 states, 15 states have (on average 19.666666666666668) internal successors, (295), 14 states have internal predecessors, (295), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:38:56,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:38:56,428 INFO L93 Difference]: Finished difference Result 23312 states and 31599 transitions. [2021-11-06 15:38:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:38:56,429 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 19.666666666666668) internal successors, (295), 14 states have internal predecessors, (295), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 254 [2021-11-06 15:38:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:38:56,458 INFO L225 Difference]: With dead ends: 23312 [2021-11-06 15:38:56,458 INFO L226 Difference]: Without dead ends: 11905 [2021-11-06 15:38:56,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-06 15:38:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11905 states. [2021-11-06 15:38:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11905 to 11608. [2021-11-06 15:38:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11608 states, 11184 states have (on average 1.330650929899857) internal successors, (14882), 11256 states have internal predecessors, (14882), 210 states have call successors, (210), 150 states have call predecessors, (210), 213 states have return successors, (591), 231 states have call predecessors, (591), 210 states have call successors, (591) [2021-11-06 15:38:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11608 states to 11608 states and 15683 transitions. [2021-11-06 15:38:57,577 INFO L78 Accepts]: Start accepts. Automaton has 11608 states and 15683 transitions. Word has length 254 [2021-11-06 15:38:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:38:57,578 INFO L470 AbstractCegarLoop]: Abstraction has 11608 states and 15683 transitions. [2021-11-06 15:38:57,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.666666666666668) internal successors, (295), 14 states have internal predecessors, (295), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 15:38:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 11608 states and 15683 transitions. [2021-11-06 15:38:57,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-06 15:38:57,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:38:57,596 INFO L513 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:38:57,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 15:38:57,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-06 15:38:57,816 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 15:38:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:38:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1053968518, now seen corresponding path program 5 times [2021-11-06 15:38:57,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:38:57,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349018493] [2021-11-06 15:38:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:38:57,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:38:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:38:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-06 15:38:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:38:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 42 proven. 45 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 15:38:58,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:38:58,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349018493] [2021-11-06 15:38:58,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349018493] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:38:58,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466876897] [2021-11-06 15:38:58,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-06 15:38:58,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:38:58,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:38:58,198 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:38:58,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15