./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.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 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:29:48,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:29:48,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:29:48,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:29:48,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:29:48,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:29:48,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:29:48,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:29:48,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:29:48,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:29:48,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:29:48,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:29:48,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:29:48,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:29:48,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:29:48,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:29:48,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:29:48,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:29:48,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:29:48,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:29:48,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:29:48,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:29:48,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:29:48,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:29:48,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:29:48,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:29:48,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:29:48,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:29:48,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:29:48,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:29:48,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:29:48,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:29:48,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:29:48,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:29:48,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:29:48,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:29:48,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:29:48,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:29:48,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:29:48,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:29:48,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:29:48,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:29:48,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:29:48,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:29:48,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:29:48,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:29:48,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:29:48,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:29:48,972 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:29:48,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:29:48,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:29:48,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:29:48,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:29:48,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:29:48,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:29:48,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:29:48,975 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:29:48,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:29:48,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:29:48,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:29:48,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:29:48,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:29:48,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:29:48,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:29:48,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:29:48,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:29:48,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:29:48,977 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:29:48,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:29:48,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:29:48,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:29:48,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f [2021-11-04 04:29:49,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:29:49,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:29:49,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:29:49,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:29:49,265 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:29:49,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-11-04 04:29:49,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891f0bcca/47b967ba9adb4c29916c12bf8c0266d6/FLAG37fb3d9b0 [2021-11-04 04:29:50,110 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:29:50,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-11-04 04:29:50,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891f0bcca/47b967ba9adb4c29916c12bf8c0266d6/FLAG37fb3d9b0 [2021-11-04 04:29:50,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891f0bcca/47b967ba9adb4c29916c12bf8c0266d6 [2021-11-04 04:29:50,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:29:50,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:29:50,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:29:50,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:29:50,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:29:50,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:29:50" (1/1) ... [2021-11-04 04:29:50,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f829921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:50, skipping insertion in model container [2021-11-04 04:29:50,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:29:50" (1/1) ... [2021-11-04 04:29:50,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:29:50,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:29:50,833 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-04 04:29:50,835 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2021-11-04 04:29:51,311 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-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2021-11-04 04:29:52,315 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-04 04:29:52,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:29:52,372 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:29:52,463 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-04 04:29:52,464 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6038-6039] [2021-11-04 04:29:52,507 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-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i[185861,185874] [2021-11-04 04:29:52,808 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-04 04:29:52,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:29:52,924 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:29:52,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52 WrapperNode [2021-11-04 04:29:52,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:29:52,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:29:52,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:29:52,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:29:52,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:53,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:53,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:29:53,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:29:53,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:29:53,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:29:53,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:53,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:53,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:53,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:54,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:54,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:54,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:54,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:29:54,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:29:54,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:29:54,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:29:54,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (1/1) ... [2021-11-04 04:29:54,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:29:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:29:54,393 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) [2021-11-04 04:29:54,415 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 [2021-11-04 04:29:54,431 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-04 04:29:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:29:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:29:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:29:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:29:54,432 INFO L130 BoogieDeclarations]: Found specification of procedure he_ioctl [2021-11-04 04:29:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure he_ioctl [2021-11-04 04:29:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:29:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:29:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:29:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-04 04:29:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-04 04:29:54,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:29:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 04:29:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:29:54,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:29:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:29:57,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:29:57,728 INFO L299 CfgBuilder]: Removed 3920 assume(true) statements. [2021-11-04 04:29:57,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:29:57 BoogieIcfgContainer [2021-11-04 04:29:57,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:29:57,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:29:57,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:29:57,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:29:57,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:29:50" (1/3) ... [2021-11-04 04:29:57,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1e1446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:29:57, skipping insertion in model container [2021-11-04 04:29:57,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:29:52" (2/3) ... [2021-11-04 04:29:57,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1e1446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:29:57, skipping insertion in model container [2021-11-04 04:29:57,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:29:57" (3/3) ... [2021-11-04 04:29:57,745 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--atm--he.ko-entry_point.cil.out.i [2021-11-04 04:29:57,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:29:57,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-04 04:29:57,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:29:57,831 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 [2021-11-04 04:29:57,831 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-04 04:29:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 3322 states, 3303 states have (on average 1.2970027247956404) internal successors, (4284), 3315 states have internal predecessors, (4284), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-04 04:29:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-04 04:29:57,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:29:57,913 INFO L514 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] [2021-11-04 04:29:57,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:29:57,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:29:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1581002451, now seen corresponding path program 1 times [2021-11-04 04:29:57,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:29:57,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919753874] [2021-11-04 04:29:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:29:57,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:29:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:29:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:29:58,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:29:58,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919753874] [2021-11-04 04:29:58,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919753874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:29:58,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:29:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:29:58,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956043784] [2021-11-04 04:29:58,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:29:58,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:29:58,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:29:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:29:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:29:58,447 INFO L87 Difference]: Start difference. First operand has 3322 states, 3303 states have (on average 1.2970027247956404) internal successors, (4284), 3315 states have internal predecessors, (4284), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-04 04:30:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:08,693 INFO L93 Difference]: Finished difference Result 9019 states and 11589 transitions. [2021-11-04 04:30:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:30:08,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-04 04:30:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:08,733 INFO L225 Difference]: With dead ends: 9019 [2021-11-04 04:30:08,734 INFO L226 Difference]: Without dead ends: 5642 [2021-11-04 04:30:08,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:08,749 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 3018 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 8399 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7971.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 8405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.98ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9738.16ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:08,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3018 Valid, 72 Invalid, 8405 Unknown, 0 Unchecked, 32.98ms Time], IncrementalHoareTripleChecker [6 Valid, 8399 Invalid, 0 Unknown, 0 Unchecked, 9738.16ms Time] [2021-11-04 04:30:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-11-04 04:30:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5199. [2021-11-04 04:30:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5181 states have (on average 1.270218104613009) internal successors, (6581), 5192 states have internal predecessors, (6581), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-04 04:30:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6589 transitions. [2021-11-04 04:30:08,962 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6589 transitions. Word has length 30 [2021-11-04 04:30:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:30:08,963 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 6589 transitions. [2021-11-04 04:30:08,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-04 04:30:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6589 transitions. [2021-11-04 04:30:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-04 04:30:08,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:30:08,965 INFO L514 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] [2021-11-04 04:30:08,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:30:08,965 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:30:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:30:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash 887517176, now seen corresponding path program 1 times [2021-11-04 04:30:08,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:30:08,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646099442] [2021-11-04 04:30:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:08,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:30:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:30:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:30:09,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:30:09,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646099442] [2021-11-04 04:30:09,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646099442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:30:09,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:30:09,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:30:09,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625446992] [2021-11-04 04:30:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:30:09,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:30:09,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:30:09,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:30:09,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:09,072 INFO L87 Difference]: Start difference. First operand 5199 states and 6589 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-04 04:30:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:18,762 INFO L93 Difference]: Finished difference Result 11503 states and 14673 transitions. [2021-11-04 04:30:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:30:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-04 04:30:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:18,806 INFO L225 Difference]: With dead ends: 11503 [2021-11-04 04:30:18,807 INFO L226 Difference]: Without dead ends: 6332 [2021-11-04 04:30:18,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:18,824 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1390 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 9532 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7795.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9257.91ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:18,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 24 Invalid, 9534 Unknown, 0 Unchecked, 26.77ms Time], IncrementalHoareTripleChecker [2 Valid, 9532 Invalid, 0 Unknown, 0 Unchecked, 9257.91ms Time] [2021-11-04 04:30:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-11-04 04:30:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 6324. [2021-11-04 04:30:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 6300 states have (on average 1.284920634920635) internal successors, (8095), 6311 states have internal predecessors, (8095), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-04 04:30:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8111 transitions. [2021-11-04 04:30:19,062 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8111 transitions. Word has length 32 [2021-11-04 04:30:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:30:19,062 INFO L470 AbstractCegarLoop]: Abstraction has 6324 states and 8111 transitions. [2021-11-04 04:30:19,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-04 04:30:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8111 transitions. [2021-11-04 04:30:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-04 04:30:19,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:30:19,071 INFO L514 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] [2021-11-04 04:30:19,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:30:19,072 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:30:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:30:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1301149159, now seen corresponding path program 1 times [2021-11-04 04:30:19,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:30:19,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429115360] [2021-11-04 04:30:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:19,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:30:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:30:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:30:19,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:30:19,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429115360] [2021-11-04 04:30:19,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429115360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:30:19,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:30:19,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:30:19,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993123356] [2021-11-04 04:30:19,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:30:19,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:30:19,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:30:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:30:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:19,255 INFO L87 Difference]: Start difference. First operand 6324 states and 8111 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-04 04:30:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:27,355 INFO L93 Difference]: Finished difference Result 13765 states and 17737 transitions. [2021-11-04 04:30:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:30:27,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-04 04:30:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:27,386 INFO L225 Difference]: With dead ends: 13765 [2021-11-04 04:30:27,387 INFO L226 Difference]: Without dead ends: 7469 [2021-11-04 04:30:27,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:27,401 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 3604 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 7480 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6394.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 7484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.92ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7717.09ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:27,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3604 Valid, 24 Invalid, 7484 Unknown, 0 Unchecked, 12.92ms Time], IncrementalHoareTripleChecker [4 Valid, 7480 Invalid, 0 Unknown, 0 Unchecked, 7717.09ms Time] [2021-11-04 04:30:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2021-11-04 04:30:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7461. [2021-11-04 04:30:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 7431 states have (on average 1.295249629928677) internal successors, (9625), 7442 states have internal predecessors, (9625), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:30:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 9649 transitions. [2021-11-04 04:30:27,595 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 9649 transitions. Word has length 45 [2021-11-04 04:30:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:30:27,596 INFO L470 AbstractCegarLoop]: Abstraction has 7461 states and 9649 transitions. [2021-11-04 04:30:27,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-04 04:30:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 9649 transitions. [2021-11-04 04:30:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-04 04:30:27,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:30:27,600 INFO L514 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] [2021-11-04 04:30:27,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:30:27,601 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:30:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:30:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash -806942872, now seen corresponding path program 1 times [2021-11-04 04:30:27,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:30:27,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43197414] [2021-11-04 04:30:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:27,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:30:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:30:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:30:27,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:30:27,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43197414] [2021-11-04 04:30:27,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43197414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:30:27,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:30:27,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 04:30:27,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637050518] [2021-11-04 04:30:27,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:30:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:30:27,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:30:27,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:30:27,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:27,781 INFO L87 Difference]: Start difference. First operand 7461 states and 9649 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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) [2021-11-04 04:30:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:33,633 INFO L93 Difference]: Finished difference Result 7461 states and 9649 transitions. [2021-11-04 04:30:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:30:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 49 [2021-11-04 04:30:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:33,664 INFO L225 Difference]: With dead ends: 7461 [2021-11-04 04:30:33,665 INFO L226 Difference]: Without dead ends: 7443 [2021-11-04 04:30:33,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:33,672 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2588 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 5665 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4698.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.80ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5652.17ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:33,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 8 Invalid, 5717 Unknown, 0 Unchecked, 7.80ms Time], IncrementalHoareTripleChecker [52 Valid, 5665 Invalid, 0 Unknown, 0 Unchecked, 5652.17ms Time] [2021-11-04 04:30:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2021-11-04 04:30:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 7443. [2021-11-04 04:30:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 7422 states have (on average 1.293182430611695) internal successors, (9598), 7424 states have internal predecessors, (9598), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:30:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 9622 transitions. [2021-11-04 04:30:33,909 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 9622 transitions. Word has length 49 [2021-11-04 04:30:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:30:33,911 INFO L470 AbstractCegarLoop]: Abstraction has 7443 states and 9622 transitions. [2021-11-04 04:30:33,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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) [2021-11-04 04:30:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 9622 transitions. [2021-11-04 04:30:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 04:30:33,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:30:33,917 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-04 04:30:33,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 04:30:33,918 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:30:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:30:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -90544357, now seen corresponding path program 1 times [2021-11-04 04:30:33,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:30:33,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16388495] [2021-11-04 04:30:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:33,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:30:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:30:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 04:30:34,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:30:34,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16388495] [2021-11-04 04:30:34,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16388495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:30:34,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:30:34,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:30:34,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129335817] [2021-11-04 04:30:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:30:34,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:30:34,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:30:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:30:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:34,067 INFO L87 Difference]: Start difference. First operand 7443 states and 9622 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-04 04:30:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:42,375 INFO L93 Difference]: Finished difference Result 14864 states and 19223 transitions. [2021-11-04 04:30:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:30:42,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 74 [2021-11-04 04:30:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:42,415 INFO L225 Difference]: With dead ends: 14864 [2021-11-04 04:30:42,415 INFO L226 Difference]: Without dead ends: 7449 [2021-11-04 04:30:42,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:42,442 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 8332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6651.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8004.82ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:42,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 8334 Unknown, 0 Unchecked, 14.97ms Time], IncrementalHoareTripleChecker [2 Valid, 8332 Invalid, 0 Unknown, 0 Unchecked, 8004.82ms Time] [2021-11-04 04:30:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2021-11-04 04:30:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 7449. [2021-11-04 04:30:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7449 states, 7428 states have (on average 1.2929456112008617) internal successors, (9604), 7430 states have internal predecessors, (9604), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:30:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7449 states to 7449 states and 9628 transitions. [2021-11-04 04:30:42,642 INFO L78 Accepts]: Start accepts. Automaton has 7449 states and 9628 transitions. Word has length 74 [2021-11-04 04:30:42,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:30:42,645 INFO L470 AbstractCegarLoop]: Abstraction has 7449 states and 9628 transitions. [2021-11-04 04:30:42,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-04 04:30:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 7449 states and 9628 transitions. [2021-11-04 04:30:42,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-04 04:30:42,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:30:42,652 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-04 04:30:42,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:30:42,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:30:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:30:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash 382366977, now seen corresponding path program 1 times [2021-11-04 04:30:42,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:30:42,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383834235] [2021-11-04 04:30:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:30:42,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:30:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:30:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:30:42,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:30:42,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383834235] [2021-11-04 04:30:42,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383834235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:30:42,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:30:42,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:30:42,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303272682] [2021-11-04 04:30:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:30:42,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:30:42,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:30:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:30:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:30:42,882 INFO L87 Difference]: Start difference. First operand 7449 states and 9628 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-04 04:31:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:31:07,254 INFO L93 Difference]: Finished difference Result 19618 states and 25238 transitions. [2021-11-04 04:31:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 04:31:07,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 76 [2021-11-04 04:31:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:31:07,296 INFO L225 Difference]: With dead ends: 19618 [2021-11-04 04:31:07,296 INFO L226 Difference]: Without dead ends: 12197 [2021-11-04 04:31:07,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.97ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:31:07,320 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6166 mSDsluCounter, 16964 mSDsCounter, 0 mSdLazyCounter, 23541 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19483.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6166 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 23548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.07ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23515.58ms IncrementalHoareTripleChecker+Time [2021-11-04 04:31:07,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6166 Valid, 38 Invalid, 23548 Unknown, 0 Unchecked, 71.07ms Time], IncrementalHoareTripleChecker [7 Valid, 23541 Invalid, 0 Unknown, 0 Unchecked, 23515.58ms Time] [2021-11-04 04:31:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12197 states. [2021-11-04 04:31:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12197 to 7462. [2021-11-04 04:31:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7462 states, 7441 states have (on average 1.2927025937374008) internal successors, (9619), 7443 states have internal predecessors, (9619), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:31:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 9643 transitions. [2021-11-04 04:31:07,667 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 9643 transitions. Word has length 76 [2021-11-04 04:31:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:31:07,668 INFO L470 AbstractCegarLoop]: Abstraction has 7462 states and 9643 transitions. [2021-11-04 04:31:07,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-04 04:31:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 9643 transitions. [2021-11-04 04:31:07,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-04 04:31:07,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:31:07,672 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-04 04:31:07,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 04:31:07,673 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:31:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:31:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 805068803, now seen corresponding path program 1 times [2021-11-04 04:31:07,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:31:07,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999541938] [2021-11-04 04:31:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:31:07,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:31:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:31:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:31:07,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:31:07,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999541938] [2021-11-04 04:31:07,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999541938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:31:07,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:31:07,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:31:07,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710251083] [2021-11-04 04:31:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:31:07,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:31:07,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:31:07,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:31:07,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:31:07,932 INFO L87 Difference]: Start difference. First operand 7462 states and 9643 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-04 04:31:10,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:31:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:31:44,309 INFO L93 Difference]: Finished difference Result 36139 states and 46688 transitions. [2021-11-04 04:31:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:31:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 76 [2021-11-04 04:31:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:31:44,384 INFO L225 Difference]: With dead ends: 36139 [2021-11-04 04:31:44,384 INFO L226 Difference]: Without dead ends: 28705 [2021-11-04 04:31:44,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.75ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:31:44,411 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 22148 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 23367 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28581.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22150 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 23403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 127.17ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 23367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34626.54ms IncrementalHoareTripleChecker+Time [2021-11-04 04:31:44,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22150 Valid, 60 Invalid, 23403 Unknown, 0 Unchecked, 127.17ms Time], IncrementalHoareTripleChecker [35 Valid, 23367 Invalid, 1 Unknown, 0 Unchecked, 34626.54ms Time] [2021-11-04 04:31:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28705 states. [2021-11-04 04:31:44,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28705 to 7468. [2021-11-04 04:31:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7468 states, 7447 states have (on average 1.292466765140325) internal successors, (9625), 7449 states have internal predecessors, (9625), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:31:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 9649 transitions. [2021-11-04 04:31:44,895 INFO L78 Accepts]: Start accepts. Automaton has 7468 states and 9649 transitions. Word has length 76 [2021-11-04 04:31:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:31:44,896 INFO L470 AbstractCegarLoop]: Abstraction has 7468 states and 9649 transitions. [2021-11-04 04:31:44,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-04 04:31:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7468 states and 9649 transitions. [2021-11-04 04:31:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 04:31:44,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:31:44,901 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-04 04:31:44,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 04:31:44,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:31:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:31:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash -653223961, now seen corresponding path program 1 times [2021-11-04 04:31:44,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:31:44,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075743443] [2021-11-04 04:31:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:31:44,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:31:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:31:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:31:45,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:31:45,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075743443] [2021-11-04 04:31:45,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075743443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:31:45,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:31:45,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:31:45,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800657650] [2021-11-04 04:31:45,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:31:45,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:31:45,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:31:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:31:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:31:45,220 INFO L87 Difference]: Start difference. First operand 7468 states and 9649 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-04 04:32:02,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-04 04:33:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:33:04,041 INFO L93 Difference]: Finished difference Result 27641 states and 36170 transitions. [2021-11-04 04:33:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:33:04,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 78 [2021-11-04 04:33:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:33:04,090 INFO L225 Difference]: With dead ends: 27641 [2021-11-04 04:33:04,091 INFO L226 Difference]: Without dead ends: 20201 [2021-11-04 04:33:04,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.78ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:33:04,112 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 16801 mSDsluCounter, 14700 mSDsCounter, 0 mSdLazyCounter, 22486 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55589.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16803 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 22500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 140.66ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22486 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76659.60ms IncrementalHoareTripleChecker+Time [2021-11-04 04:33:04,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16803 Valid, 44 Invalid, 22500 Unknown, 0 Unchecked, 140.66ms Time], IncrementalHoareTripleChecker [13 Valid, 22486 Invalid, 1 Unknown, 0 Unchecked, 76659.60ms Time] [2021-11-04 04:33:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20201 states. [2021-11-04 04:33:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20201 to 7050. [2021-11-04 04:33:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7050 states, 7029 states have (on average 1.2943519704083084) internal successors, (9098), 7031 states have internal predecessors, (9098), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:33:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 9122 transitions. [2021-11-04 04:33:04,649 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 9122 transitions. Word has length 78 [2021-11-04 04:33:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:33:04,649 INFO L470 AbstractCegarLoop]: Abstraction has 7050 states and 9122 transitions. [2021-11-04 04:33:04,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-04 04:33:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 9122 transitions. [2021-11-04 04:33:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 04:33:04,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:33:04,656 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-04 04:33:04,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 04:33:04,657 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:33:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:33:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash -741958678, now seen corresponding path program 1 times [2021-11-04 04:33:04,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:33:04,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315245692] [2021-11-04 04:33:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:33:04,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:33:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:33:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:33:04,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:33:04,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315245692] [2021-11-04 04:33:04,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315245692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:33:04,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:33:04,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:33:04,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656858563] [2021-11-04 04:33:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:33:04,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:33:04,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:33:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:33:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:33:04,843 INFO L87 Difference]: Start difference. First operand 7050 states and 9122 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-11-04 04:33:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:33:24,974 INFO L93 Difference]: Finished difference Result 15500 states and 20050 transitions. [2021-11-04 04:33:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:33:24,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 89 [2021-11-04 04:33:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:33:24,989 INFO L225 Difference]: With dead ends: 15500 [2021-11-04 04:33:24,990 INFO L226 Difference]: Without dead ends: 8478 [2021-11-04 04:33:25,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:33:25,002 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2194 mSDsluCounter, 9093 mSDsCounter, 0 mSdLazyCounter, 14024 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15169.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.07ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19170.51ms IncrementalHoareTripleChecker+Time [2021-11-04 04:33:25,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 24 Invalid, 14031 Unknown, 0 Unchecked, 38.07ms Time], IncrementalHoareTripleChecker [7 Valid, 14024 Invalid, 0 Unknown, 0 Unchecked, 19170.51ms Time] [2021-11-04 04:33:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-11-04 04:33:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 7052. [2021-11-04 04:33:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7052 states, 7031 states have (on average 1.2942682406485564) internal successors, (9100), 7033 states have internal predecessors, (9100), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:33:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 9124 transitions. [2021-11-04 04:33:25,482 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 9124 transitions. Word has length 89 [2021-11-04 04:33:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:33:25,483 INFO L470 AbstractCegarLoop]: Abstraction has 7052 states and 9124 transitions. [2021-11-04 04:33:25,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-11-04 04:33:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 9124 transitions. [2021-11-04 04:33:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-04 04:33:25,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:33:25,492 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:33:25,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 04:33:25,492 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:33:25,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:33:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2074368120, now seen corresponding path program 1 times [2021-11-04 04:33:25,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:33:25,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759140405] [2021-11-04 04:33:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:33:25,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:33:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:33:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:33:25,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:33:25,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759140405] [2021-11-04 04:33:25,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759140405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:33:25,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:33:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:33:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060172463] [2021-11-04 04:33:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:33:25,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:33:25,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:33:25,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:33:25,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:33:25,676 INFO L87 Difference]: Start difference. First operand 7052 states and 9124 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-04 04:33:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:33:40,207 INFO L93 Difference]: Finished difference Result 14216 states and 18381 transitions. [2021-11-04 04:33:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:33:40,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 [2021-11-04 04:33:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:33:40,224 INFO L225 Difference]: With dead ends: 14216 [2021-11-04 04:33:40,224 INFO L226 Difference]: Without dead ends: 7192 [2021-11-04 04:33:40,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:33:40,243 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 8329 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10762.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.94ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13810.33ms IncrementalHoareTripleChecker+Time [2021-11-04 04:33:40,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 16 Invalid, 8337 Unknown, 0 Unchecked, 20.94ms Time], IncrementalHoareTripleChecker [8 Valid, 8329 Invalid, 0 Unknown, 0 Unchecked, 13810.33ms Time] [2021-11-04 04:33:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2021-11-04 04:33:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 7062. [2021-11-04 04:33:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7062 states, 7041 states have (on average 1.293850305354353) internal successors, (9110), 7043 states have internal predecessors, (9110), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:33:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 9134 transitions. [2021-11-04 04:33:40,709 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 9134 transitions. Word has length 166 [2021-11-04 04:33:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:33:40,709 INFO L470 AbstractCegarLoop]: Abstraction has 7062 states and 9134 transitions. [2021-11-04 04:33:40,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-04 04:33:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 9134 transitions. [2021-11-04 04:33:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-04 04:33:40,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:33:40,719 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:33:40,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 04:33:40,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:33:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:33:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash 359465740, now seen corresponding path program 1 times [2021-11-04 04:33:40,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:33:40,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234130813] [2021-11-04 04:33:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:33:40,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:33:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:33:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 04:33:40,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:33:40,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234130813] [2021-11-04 04:33:40,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234130813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:33:40,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:33:40,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:33:40,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829125489] [2021-11-04 04:33:40,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:33:40,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:33:40,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:33:40,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:33:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:33:40,900 INFO L87 Difference]: Start difference. First operand 7062 states and 9134 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2021-11-04 04:33:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:33:57,025 INFO L93 Difference]: Finished difference Result 14174 states and 18325 transitions. [2021-11-04 04:33:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:33:57,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 188 [2021-11-04 04:33:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:33:57,041 INFO L225 Difference]: With dead ends: 14174 [2021-11-04 04:33:57,041 INFO L226 Difference]: Without dead ends: 7140 [2021-11-04 04:33:57,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:33:57,057 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 8328 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11606.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.67ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 8328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15310.16ms IncrementalHoareTripleChecker+Time [2021-11-04 04:33:57,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 16 Invalid, 8338 Unknown, 0 Unchecked, 22.67ms Time], IncrementalHoareTripleChecker [10 Valid, 8328 Invalid, 0 Unknown, 0 Unchecked, 15310.16ms Time] [2021-11-04 04:33:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-11-04 04:33:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 7074. [2021-11-04 04:33:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7074 states, 7053 states have (on average 1.2933503473699135) internal successors, (9122), 7055 states have internal predecessors, (9122), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:33:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7074 states to 7074 states and 9146 transitions. [2021-11-04 04:33:57,508 INFO L78 Accepts]: Start accepts. Automaton has 7074 states and 9146 transitions. Word has length 188 [2021-11-04 04:33:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:33:57,508 INFO L470 AbstractCegarLoop]: Abstraction has 7074 states and 9146 transitions. [2021-11-04 04:33:57,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2021-11-04 04:33:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7074 states and 9146 transitions. [2021-11-04 04:33:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-04 04:33:57,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:33:57,517 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:33:57,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 04:33:57,517 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:33:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:33:57,518 INFO L85 PathProgramCache]: Analyzing trace with hash 476710264, now seen corresponding path program 1 times [2021-11-04 04:33:57,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:33:57,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095671063] [2021-11-04 04:33:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:33:57,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:33:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:33:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 04:33:57,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:33:57,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095671063] [2021-11-04 04:33:57,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095671063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:33:57,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704060120] [2021-11-04 04:33:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:33:57,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:33:57,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:33:57,699 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) [2021-11-04 04:33:57,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 04:33:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:33:58,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 04:33:58,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:33:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 04:33:59,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:33:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 04:33:59,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704060120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:33:59,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:33:59,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-04 04:33:59,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847360806] [2021-11-04 04:33:59,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:33:59,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 04:33:59,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:33:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 04:33:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:33:59,639 INFO L87 Difference]: Start difference. First operand 7074 states and 9146 transitions. Second operand has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 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) [2021-11-04 04:34:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:34:18,449 INFO L93 Difference]: Finished difference Result 14378 states and 18559 transitions. [2021-11-04 04:34:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:34:18,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 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 227 [2021-11-04 04:34:18,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:34:18,463 INFO L225 Difference]: With dead ends: 14378 [2021-11-04 04:34:18,463 INFO L226 Difference]: Without dead ends: 7332 [2021-11-04 04:34:18,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.95ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:34:18,476 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 244 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 12585 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13880.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 12654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.22ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 12585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17980.90ms IncrementalHoareTripleChecker+Time [2021-11-04 04:34:18,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 24 Invalid, 12654 Unknown, 0 Unchecked, 31.22ms Time], IncrementalHoareTripleChecker [69 Valid, 12585 Invalid, 0 Unknown, 0 Unchecked, 17980.90ms Time] [2021-11-04 04:34:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-11-04 04:34:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 7308. [2021-11-04 04:34:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7308 states, 7287 states have (on average 1.2839302868121312) internal successors, (9356), 7289 states have internal predecessors, (9356), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:34:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 9380 transitions. [2021-11-04 04:34:18,969 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 9380 transitions. Word has length 227 [2021-11-04 04:34:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:34:18,969 INFO L470 AbstractCegarLoop]: Abstraction has 7308 states and 9380 transitions. [2021-11-04 04:34:18,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 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) [2021-11-04 04:34:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 9380 transitions. [2021-11-04 04:34:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-04 04:34:18,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:34:18,979 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:34:19,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 04:34:19,199 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,SelfDestructingSolverStorable11 [2021-11-04 04:34:19,200 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:34:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:34:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1755828948, now seen corresponding path program 2 times [2021-11-04 04:34:19,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:34:19,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879214784] [2021-11-04 04:34:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:34:19,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:34:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:34:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-11-04 04:34:19,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:34:19,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879214784] [2021-11-04 04:34:19,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879214784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:34:19,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543849322] [2021-11-04 04:34:19,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 04:34:19,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:34:19,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:34:19,474 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) [2021-11-04 04:34:19,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 04:34:21,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 04:34:21,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 04:34:21,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 4319 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 04:34:21,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:34:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-04 04:34:22,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:34:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-04 04:34:23,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543849322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:34:23,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:34:23,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2021-11-04 04:34:23,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736788946] [2021-11-04 04:34:23,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:34:23,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 04:34:23,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:34:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 04:34:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-04 04:34:23,275 INFO L87 Difference]: Start difference. First operand 7308 states and 9380 transitions. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2021-11-04 04:34:25,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:34:27,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:34:29,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:34:31,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:34:33,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:34:36,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:35:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:35:15,602 INFO L93 Difference]: Finished difference Result 16306 states and 20697 transitions. [2021-11-04 04:35:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-04 04:35:15,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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 344 [2021-11-04 04:35:15,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:35:15,617 INFO L225 Difference]: With dead ends: 16306 [2021-11-04 04:35:15,618 INFO L226 Difference]: Without dead ends: 9026 [2021-11-04 04:35:15,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 236.91ms TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-04 04:35:15,629 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1540 mSDsluCounter, 24900 mSDsCounter, 0 mSdLazyCounter, 29666 mSolverCounterSat, 348 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41560.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 30017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.54ms SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 29666 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50714.60ms IncrementalHoareTripleChecker+Time [2021-11-04 04:35:15,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 56 Invalid, 30017 Unknown, 0 Unchecked, 89.54ms Time], IncrementalHoareTripleChecker [348 Valid, 29666 Invalid, 3 Unknown, 0 Unchecked, 50714.60ms Time] [2021-11-04 04:35:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2021-11-04 04:35:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 8132. [2021-11-04 04:35:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8132 states, 8111 states have (on average 1.2570583158673407) internal successors, (10196), 8113 states have internal predecessors, (10196), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:35:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10220 transitions. [2021-11-04 04:35:16,233 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10220 transitions. Word has length 344 [2021-11-04 04:35:16,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:35:16,235 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 10220 transitions. [2021-11-04 04:35:16,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2021-11-04 04:35:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10220 transitions. [2021-11-04 04:35:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2021-11-04 04:35:16,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:35:16,258 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:35:16,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-04 04:35:16,471 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,SelfDestructingSolverStorable12 [2021-11-04 04:35:16,472 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:35:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:35:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash 494058296, now seen corresponding path program 3 times [2021-11-04 04:35:16,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:35:16,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184660892] [2021-11-04 04:35:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:35:16,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:35:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:35:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2780 trivial. 0 not checked. [2021-11-04 04:35:17,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:35:17,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184660892] [2021-11-04 04:35:17,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184660892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:35:17,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293399342] [2021-11-04 04:35:17,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 04:35:17,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:35:17,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:35:17,675 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) [2021-11-04 04:35:17,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 04:35:20,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 04:35:20,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 04:35:20,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 04:35:20,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:35:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3657 trivial. 0 not checked. [2021-11-04 04:35:21,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:35:21,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293399342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:35:21,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 04:35:21,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-04 04:35:21,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660251806] [2021-11-04 04:35:21,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:35:21,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:35:21,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:35:21,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:35:21,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:35:21,681 INFO L87 Difference]: Start difference. First operand 8132 states and 10220 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2021-11-04 04:35:33,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-04 04:36:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:36:17,298 INFO L93 Difference]: Finished difference Result 17651 states and 22230 transitions. [2021-11-04 04:36:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:36:17,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 730 [2021-11-04 04:36:17,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:36:17,314 INFO L225 Difference]: With dead ends: 17651 [2021-11-04 04:36:17,314 INFO L226 Difference]: Without dead ends: 9547 [2021-11-04 04:36:17,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 298.18ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:36:17,328 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2160 mSDsluCounter, 9091 mSDsCounter, 0 mSdLazyCounter, 14015 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40332.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.67ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14015 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53945.73ms IncrementalHoareTripleChecker+Time [2021-11-04 04:36:17,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2160 Valid, 24 Invalid, 14029 Unknown, 0 Unchecked, 80.67ms Time], IncrementalHoareTripleChecker [13 Valid, 14015 Invalid, 1 Unknown, 0 Unchecked, 53945.73ms Time] [2021-11-04 04:36:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2021-11-04 04:36:17,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 8132. [2021-11-04 04:36:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8132 states, 8111 states have (on average 1.2570583158673407) internal successors, (10196), 8113 states have internal predecessors, (10196), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:36:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10220 transitions. [2021-11-04 04:36:17,891 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10220 transitions. Word has length 730 [2021-11-04 04:36:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:36:17,892 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 10220 transitions. [2021-11-04 04:36:17,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2021-11-04 04:36:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10220 transitions. [2021-11-04 04:36:17,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2021-11-04 04:36:17,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:36:17,939 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:36:17,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 04:36:18,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:36:18,156 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:36:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:36:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash 115068768, now seen corresponding path program 1 times [2021-11-04 04:36:18,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:36:18,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452062655] [2021-11-04 04:36:18,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:18,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:36:18,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:36:18,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072733800] [2021-11-04 04:36:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:18,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:36:18,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:36:18,387 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) [2021-11-04 04:36:18,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 04:36:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:36:20,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 12012 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:36:20,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:36:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3690 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3683 trivial. 0 not checked. [2021-11-04 04:36:22,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:36:22,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:36:22,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452062655] [2021-11-04 04:36:22,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:36:22,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072733800] [2021-11-04 04:36:22,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072733800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:36:22,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:36:22,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:36:22,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896671432] [2021-11-04 04:36:22,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:36:22,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:36:22,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:36:22,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:36:22,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:22,507 INFO L87 Difference]: Start difference. First operand 8132 states and 10220 transitions. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2021-11-04 04:36:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:36:47,179 INFO L93 Difference]: Finished difference Result 16290 states and 20473 transitions. [2021-11-04 04:36:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:36:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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 1112 [2021-11-04 04:36:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:36:47,197 INFO L225 Difference]: With dead ends: 16290 [2021-11-04 04:36:47,197 INFO L226 Difference]: Without dead ends: 8186 [2021-11-04 04:36:47,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:47,217 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 8331 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17363.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.25ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23670.44ms IncrementalHoareTripleChecker+Time [2021-11-04 04:36:47,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 16 Invalid, 8335 Unknown, 0 Unchecked, 32.25ms Time], IncrementalHoareTripleChecker [4 Valid, 8331 Invalid, 0 Unknown, 0 Unchecked, 23670.44ms Time] [2021-11-04 04:36:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8186 states. [2021-11-04 04:36:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8186 to 8138. [2021-11-04 04:36:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8138 states, 8117 states have (on average 1.2568683010964643) internal successors, (10202), 8119 states have internal predecessors, (10202), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:36:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8138 states to 8138 states and 10226 transitions. [2021-11-04 04:36:47,801 INFO L78 Accepts]: Start accepts. Automaton has 8138 states and 10226 transitions. Word has length 1112 [2021-11-04 04:36:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:36:47,802 INFO L470 AbstractCegarLoop]: Abstraction has 8138 states and 10226 transitions. [2021-11-04 04:36:47,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2021-11-04 04:36:47,803 INFO L276 IsEmpty]: Start isEmpty. Operand 8138 states and 10226 transitions. [2021-11-04 04:36:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2021-11-04 04:36:47,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:36:47,818 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:36:47,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 04:36:48,027 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,SelfDestructingSolverStorable14 [2021-11-04 04:36:48,028 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:36:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:36:48,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1116309504, now seen corresponding path program 1 times [2021-11-04 04:36:48,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:36:48,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032947973] [2021-11-04 04:36:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:48,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:36:48,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:36:48,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890754356] [2021-11-04 04:36:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:36:48,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:36:48,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:36:48,236 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) [2021-11-04 04:36:48,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 04:36:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:36:50,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 12274 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:36:50,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:36:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3693 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3686 trivial. 0 not checked. [2021-11-04 04:36:52,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:36:52,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:36:52,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032947973] [2021-11-04 04:36:52,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:36:52,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890754356] [2021-11-04 04:36:52,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890754356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:36:52,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:36:52,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:36:52,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251941650] [2021-11-04 04:36:52,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:36:52,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:36:52,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:36:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:36:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:36:52,119 INFO L87 Difference]: Start difference. First operand 8138 states and 10226 transitions. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2021-11-04 04:37:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:37:12,306 INFO L93 Difference]: Finished difference Result 16284 states and 20457 transitions. [2021-11-04 04:37:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:37:12,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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 1139 [2021-11-04 04:37:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:37:12,319 INFO L225 Difference]: With dead ends: 16284 [2021-11-04 04:37:12,319 INFO L226 Difference]: Without dead ends: 8174 [2021-11-04 04:37:12,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:12,335 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 8333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14405.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19233.83ms IncrementalHoareTripleChecker+Time [2021-11-04 04:37:12,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 8333 Unknown, 0 Unchecked, 24.94ms Time], IncrementalHoareTripleChecker [0 Valid, 8333 Invalid, 0 Unknown, 0 Unchecked, 19233.83ms Time] [2021-11-04 04:37:12,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2021-11-04 04:37:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 8140. [2021-11-04 04:37:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8140 states, 8119 states have (on average 1.256805025249415) internal successors, (10204), 8121 states have internal predecessors, (10204), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:37:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10228 transitions. [2021-11-04 04:37:12,867 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10228 transitions. Word has length 1139 [2021-11-04 04:37:12,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:37:12,869 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10228 transitions. [2021-11-04 04:37:12,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2021-11-04 04:37:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10228 transitions. [2021-11-04 04:37:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-04 04:37:12,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:37:12,889 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:37:12,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-04 04:37:13,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-04 04:37:13,116 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:37:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:37:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1022085076, now seen corresponding path program 1 times [2021-11-04 04:37:13,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:37:13,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506361037] [2021-11-04 04:37:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:13,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:37:13,311 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:37:13,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989796941] [2021-11-04 04:37:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:13,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:37:13,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:37:13,314 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) [2021-11-04 04:37:13,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 04:37:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:37:15,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 12533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 04:37:15,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:37:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-04 04:37:18,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:37:18,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:37:18,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506361037] [2021-11-04 04:37:18,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:37:18,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989796941] [2021-11-04 04:37:18,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989796941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:37:18,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:37:18,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 04:37:18,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410291129] [2021-11-04 04:37:18,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:37:18,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:37:18,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:37:18,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:37:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:18,343 INFO L87 Difference]: Start difference. First operand 8140 states and 10228 transitions. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 2 states have internal predecessors, (632), 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) [2021-11-04 04:37:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:37:33,443 INFO L93 Difference]: Finished difference Result 16252 states and 20423 transitions. [2021-11-04 04:37:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:37:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 2 states have internal predecessors, (632), 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 1157 [2021-11-04 04:37:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:37:33,455 INFO L225 Difference]: With dead ends: 16252 [2021-11-04 04:37:33,456 INFO L226 Difference]: Without dead ends: 8140 [2021-11-04 04:37:33,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:33,470 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3970 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10599.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3970 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14221.37ms IncrementalHoareTripleChecker+Time [2021-11-04 04:37:33,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3970 Valid, 8 Invalid, 4166 Unknown, 0 Unchecked, 11.29ms Time], IncrementalHoareTripleChecker [1 Valid, 4165 Invalid, 0 Unknown, 0 Unchecked, 14221.37ms Time] [2021-11-04 04:37:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2021-11-04 04:37:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 8140. [2021-11-04 04:37:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8140 states, 8119 states have (on average 1.256312353738145) internal successors, (10200), 8121 states have internal predecessors, (10200), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:37:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10224 transitions. [2021-11-04 04:37:34,031 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10224 transitions. Word has length 1157 [2021-11-04 04:37:34,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:37:34,032 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10224 transitions. [2021-11-04 04:37:34,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 2 states have internal predecessors, (632), 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) [2021-11-04 04:37:34,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10224 transitions. [2021-11-04 04:37:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-04 04:37:34,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:37:34,049 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:37:34,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 04:37:34,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-04 04:37:34,255 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:37:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:37:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1474582486, now seen corresponding path program 1 times [2021-11-04 04:37:34,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:37:34,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588248779] [2021-11-04 04:37:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:34,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:37:34,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:37:34,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118606579] [2021-11-04 04:37:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:34,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:37:34,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:37:34,425 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) [2021-11-04 04:37:34,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 04:37:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:37:36,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 12529 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 04:37:36,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:37:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-04 04:37:38,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:37:38,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:37:38,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588248779] [2021-11-04 04:37:38,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:37:38,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118606579] [2021-11-04 04:37:38,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118606579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:37:38,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:37:38,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 04:37:38,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213605394] [2021-11-04 04:37:38,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:37:38,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:37:38,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:37:38,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:37:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:38,875 INFO L87 Difference]: Start difference. First operand 8140 states and 10224 transitions. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 2 states have internal predecessors, (632), 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) [2021-11-04 04:37:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:37:54,198 INFO L93 Difference]: Finished difference Result 16252 states and 20415 transitions. [2021-11-04 04:37:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:37:54,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 2 states have internal predecessors, (632), 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 1157 [2021-11-04 04:37:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:37:54,211 INFO L225 Difference]: With dead ends: 16252 [2021-11-04 04:37:54,212 INFO L226 Difference]: Without dead ends: 8140 [2021-11-04 04:37:54,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:37:54,225 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3968 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10692.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14433.35ms IncrementalHoareTripleChecker+Time [2021-11-04 04:37:54,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3968 Valid, 8 Invalid, 4164 Unknown, 0 Unchecked, 11.25ms Time], IncrementalHoareTripleChecker [0 Valid, 4164 Invalid, 0 Unknown, 0 Unchecked, 14433.35ms Time] [2021-11-04 04:37:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2021-11-04 04:37:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 8140. [2021-11-04 04:37:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8140 states, 8119 states have (on average 1.25606601798251) internal successors, (10198), 8121 states have internal predecessors, (10198), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:37:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10222 transitions. [2021-11-04 04:37:54,874 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10222 transitions. Word has length 1157 [2021-11-04 04:37:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:37:54,874 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10222 transitions. [2021-11-04 04:37:54,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 2 states have internal predecessors, (632), 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) [2021-11-04 04:37:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10222 transitions. [2021-11-04 04:37:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-04 04:37:54,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:37:54,889 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:37:54,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-04 04:37:55,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:37:55,091 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:37:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:37:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash 796442516, now seen corresponding path program 1 times [2021-11-04 04:37:55,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:37:55,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884226579] [2021-11-04 04:37:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:55,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:37:55,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:37:55,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395176732] [2021-11-04 04:37:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:37:55,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:37:55,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:37:55,265 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) [2021-11-04 04:37:55,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 04:37:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:37:57,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 12525 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 04:37:57,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:37:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-04 04:37:59,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:38:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-04 04:38:01,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:38:01,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884226579] [2021-11-04 04:38:01,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:38:01,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395176732] [2021-11-04 04:38:01,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395176732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:38:01,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 04:38:01,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-04 04:38:01,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86555118] [2021-11-04 04:38:01,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 04:38:01,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 04:38:01,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:38:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 04:38:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:38:01,377 INFO L87 Difference]: Start difference. First operand 8140 states and 10222 transitions. Second operand has 8 states, 8 states have (on average 88.25) internal successors, (706), 8 states have internal predecessors, (706), 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) [2021-11-04 04:38:03,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:06,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:38:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:38:47,636 INFO L93 Difference]: Finished difference Result 23543 states and 29607 transitions. [2021-11-04 04:38:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 04:38:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 88.25) internal successors, (706), 8 states have internal predecessors, (706), 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 1157 [2021-11-04 04:38:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:38:47,660 INFO L225 Difference]: With dead ends: 23543 [2021-11-04 04:38:47,661 INFO L226 Difference]: Without dead ends: 15431 [2021-11-04 04:38:47,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2312 GetRequests, 2306 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.13ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:38:47,674 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 8447 mSDsluCounter, 13608 mSDsCounter, 0 mSdLazyCounter, 19149 mSolverCounterSat, 69 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33831.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8451 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.34ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 19149 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44074.09ms IncrementalHoareTripleChecker+Time [2021-11-04 04:38:47,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8451 Valid, 22 Invalid, 19220 Unknown, 0 Unchecked, 79.34ms Time], IncrementalHoareTripleChecker [69 Valid, 19149 Invalid, 2 Unknown, 0 Unchecked, 44074.09ms Time] [2021-11-04 04:38:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15431 states. [2021-11-04 04:38:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15431 to 9468. [2021-11-04 04:38:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9468 states, 9447 states have (on average 1.224939134116651) internal successors, (11572), 9449 states have internal predecessors, (11572), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:38:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9468 states to 9468 states and 11596 transitions. [2021-11-04 04:38:48,544 INFO L78 Accepts]: Start accepts. Automaton has 9468 states and 11596 transitions. Word has length 1157 [2021-11-04 04:38:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:38:48,544 INFO L470 AbstractCegarLoop]: Abstraction has 9468 states and 11596 transitions. [2021-11-04 04:38:48,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.25) internal successors, (706), 8 states have internal predecessors, (706), 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) [2021-11-04 04:38:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 9468 states and 11596 transitions. [2021-11-04 04:38:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1807 [2021-11-04 04:38:48,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:38:48,572 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:38:48,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-04 04:38:48,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:38:48,774 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:38:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:38:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash -253202446, now seen corresponding path program 2 times [2021-11-04 04:38:48,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:38:48,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360810718] [2021-11-04 04:38:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:38:48,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:38:49,040 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:38:49,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473026440] [2021-11-04 04:38:49,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 04:38:49,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:38:49,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:38:49,042 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) [2021-11-04 04:38:49,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 04:38:55,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 04:38:55,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 04:38:55,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 18464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-04 04:38:55,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:38:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-04 04:38:58,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:39:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-04 04:39:02,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:39:02,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360810718] [2021-11-04 04:39:02,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:39:02,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473026440] [2021-11-04 04:39:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473026440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:39:02,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 04:39:02,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-04 04:39:02,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730997447] [2021-11-04 04:39:02,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 04:39:02,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-04 04:39:02,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:39:02,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-04 04:39:02,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-04 04:39:02,653 INFO L87 Difference]: Start difference. First operand 9468 states and 11596 transitions. Second operand has 16 states, 16 states have (on average 56.125) internal successors, (898), 16 states have internal predecessors, (898), 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) [2021-11-04 04:39:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:39:54,790 INFO L93 Difference]: Finished difference Result 28587 states and 35109 transitions. [2021-11-04 04:39:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-04 04:39:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 56.125) internal successors, (898), 16 states have internal predecessors, (898), 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 1806 [2021-11-04 04:39:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:39:54,826 INFO L225 Difference]: With dead ends: 28587 [2021-11-04 04:39:54,827 INFO L226 Difference]: Without dead ends: 19147 [2021-11-04 04:39:54,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3610 GetRequests, 3596 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.52ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-04 04:39:54,844 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 13261 mSDsluCounter, 20747 mSDsCounter, 0 mSdLazyCounter, 26370 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36891.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13265 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 26515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 99.93ms SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 26370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49247.09ms IncrementalHoareTripleChecker+Time [2021-11-04 04:39:54,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13265 Valid, 34 Invalid, 26515 Unknown, 0 Unchecked, 99.93ms Time], IncrementalHoareTripleChecker [145 Valid, 26370 Invalid, 0 Unknown, 0 Unchecked, 49247.09ms Time] [2021-11-04 04:39:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2021-11-04 04:39:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 12368. [2021-11-04 04:39:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12368 states, 12347 states have (on average 1.1800437353203208) internal successors, (14570), 12349 states have internal predecessors, (14570), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:39:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12368 states to 12368 states and 14594 transitions. [2021-11-04 04:39:56,037 INFO L78 Accepts]: Start accepts. Automaton has 12368 states and 14594 transitions. Word has length 1806 [2021-11-04 04:39:56,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:39:56,038 INFO L470 AbstractCegarLoop]: Abstraction has 12368 states and 14594 transitions. [2021-11-04 04:39:56,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.125) internal successors, (898), 16 states have internal predecessors, (898), 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) [2021-11-04 04:39:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 12368 states and 14594 transitions. [2021-11-04 04:39:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3224 [2021-11-04 04:39:56,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:39:56,100 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:39:56,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-04 04:39:56,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:39:56,301 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:39:56,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:39:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2091651000, now seen corresponding path program 3 times [2021-11-04 04:39:56,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:39:56,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235186869] [2021-11-04 04:39:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:39:56,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:39:56,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:39:56,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954630056] [2021-11-04 04:39:56,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 04:39:56,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:39:56,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:39:56,798 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) [2021-11-04 04:39:56,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 04:40:00,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 04:40:00,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 04:40:00,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 6426 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 04:40:00,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:40:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-04 04:40:04,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:40:04,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:40:04,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235186869] [2021-11-04 04:40:04,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:40:04,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954630056] [2021-11-04 04:40:04,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954630056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:40:04,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:40:04,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:40:04,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513548576] [2021-11-04 04:40:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:40:04,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:40:04,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:40:04,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:40:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:40:04,238 INFO L87 Difference]: Start difference. First operand 12368 states and 14594 transitions. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2021-11-04 04:40:05,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:40:06,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:40:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:40:45,649 INFO L93 Difference]: Finished difference Result 33976 states and 39577 transitions. [2021-11-04 04:40:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:40:45,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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 3223 [2021-11-04 04:40:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:40:45,682 INFO L225 Difference]: With dead ends: 33976 [2021-11-04 04:40:45,682 INFO L226 Difference]: Without dead ends: 21636 [2021-11-04 04:40:45,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3224 GetRequests, 3221 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:40:45,701 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4728 mSDsluCounter, 10464 mSDsCounter, 0 mSdLazyCounter, 16750 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29393.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 16750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38682.71ms IncrementalHoareTripleChecker+Time [2021-11-04 04:40:45,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 24 Invalid, 16750 Unknown, 0 Unchecked, 52.50ms Time], IncrementalHoareTripleChecker [0 Valid, 16750 Invalid, 0 Unknown, 0 Unchecked, 38682.71ms Time] [2021-11-04 04:40:45,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21636 states. [2021-11-04 04:40:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21636 to 12370. [2021-11-04 04:40:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12370 states, 12349 states have (on average 1.1800145760790348) internal successors, (14572), 12351 states have internal predecessors, (14572), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:40:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12370 states to 12370 states and 14596 transitions. [2021-11-04 04:40:46,840 INFO L78 Accepts]: Start accepts. Automaton has 12370 states and 14596 transitions. Word has length 3223 [2021-11-04 04:40:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:40:46,841 INFO L470 AbstractCegarLoop]: Abstraction has 12370 states and 14596 transitions. [2021-11-04 04:40:46,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 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) [2021-11-04 04:40:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12370 states and 14596 transitions. [2021-11-04 04:40:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3230 [2021-11-04 04:40:46,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:40:46,900 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:40:46,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 04:40:47,102 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,SelfDestructingSolverStorable20 [2021-11-04 04:40:47,102 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:40:47,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:40:47,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1584409371, now seen corresponding path program 1 times [2021-11-04 04:40:47,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:40:47,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209385528] [2021-11-04 04:40:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:40:47,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:40:47,526 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:40:47,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699506839] [2021-11-04 04:40:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:40:47,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:40:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:40:47,528 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) [2021-11-04 04:40:47,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 04:40:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:40:52,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 31432 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:40:52,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:40:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-04 04:40:56,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:40:56,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:40:56,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209385528] [2021-11-04 04:40:56,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:40:56,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699506839] [2021-11-04 04:40:56,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699506839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:40:56,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:40:56,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:40:56,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565035380] [2021-11-04 04:40:56,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:40:56,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:40:56,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:40:56,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:40:56,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:40:56,700 INFO L87 Difference]: Start difference. First operand 12370 states and 14596 transitions. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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) [2021-11-04 04:41:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:41:24,343 INFO L93 Difference]: Finished difference Result 24730 states and 29181 transitions. [2021-11-04 04:41:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:41:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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 3229 [2021-11-04 04:41:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:41:24,379 INFO L225 Difference]: With dead ends: 24730 [2021-11-04 04:41:24,380 INFO L226 Difference]: Without dead ends: 12388 [2021-11-04 04:41:24,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3228 GetRequests, 3227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:41:24,403 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 8327 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18455.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25937.32ms IncrementalHoareTripleChecker+Time [2021-11-04 04:41:24,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 16 Invalid, 8327 Unknown, 0 Unchecked, 26.74ms Time], IncrementalHoareTripleChecker [0 Valid, 8327 Invalid, 0 Unknown, 0 Unchecked, 25937.32ms Time] [2021-11-04 04:41:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12388 states. [2021-11-04 04:41:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12388 to 12372. [2021-11-04 04:41:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12372 states, 12351 states have (on average 1.1799854262812728) internal successors, (14574), 12353 states have internal predecessors, (14574), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:41:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 14598 transitions. [2021-11-04 04:41:25,537 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 14598 transitions. Word has length 3229 [2021-11-04 04:41:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:41:25,539 INFO L470 AbstractCegarLoop]: Abstraction has 12372 states and 14598 transitions. [2021-11-04 04:41:25,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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) [2021-11-04 04:41:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 14598 transitions. [2021-11-04 04:41:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3239 [2021-11-04 04:41:25,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:41:25,597 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:41:25,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 04:41:25,798 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,SelfDestructingSolverStorable21 [2021-11-04 04:41:25,798 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:41:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:41:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash -622776611, now seen corresponding path program 1 times [2021-11-04 04:41:25,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:41:25,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817635452] [2021-11-04 04:41:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:41:25,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:41:26,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:41:26,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786744327] [2021-11-04 04:41:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:41:26,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:41:26,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:41:26,199 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) [2021-11-04 04:41:26,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-04 04:41:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:41:31,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 31518 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:41:31,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:41:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 102480 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102473 trivial. 0 not checked. [2021-11-04 04:41:35,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:41:35,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:41:35,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817635452] [2021-11-04 04:41:35,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:41:35,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786744327] [2021-11-04 04:41:35,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786744327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:41:35,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:41:35,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:41:35,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545789081] [2021-11-04 04:41:35,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:41:35,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:41:35,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:41:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:41:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:41:35,801 INFO L87 Difference]: Start difference. First operand 12372 states and 14598 transitions. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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) [2021-11-04 04:42:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:42:03,565 INFO L93 Difference]: Finished difference Result 24734 states and 29185 transitions. [2021-11-04 04:42:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:42:03,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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 3238 [2021-11-04 04:42:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:42:03,586 INFO L225 Difference]: With dead ends: 24734 [2021-11-04 04:42:03,586 INFO L226 Difference]: Without dead ends: 12390 [2021-11-04 04:42:03,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3237 GetRequests, 3236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:42:03,604 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 4153 mSDsCounter, 0 mSdLazyCounter, 8317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18686.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26180.58ms IncrementalHoareTripleChecker+Time [2021-11-04 04:42:03,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 8319 Unknown, 0 Unchecked, 25.98ms Time], IncrementalHoareTripleChecker [2 Valid, 8317 Invalid, 0 Unknown, 0 Unchecked, 26180.58ms Time] [2021-11-04 04:42:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12390 states. [2021-11-04 04:42:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12390 to 12374. [2021-11-04 04:42:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12374 states, 12353 states have (on average 1.179956285922448) internal successors, (14576), 12355 states have internal predecessors, (14576), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:42:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 14600 transitions. [2021-11-04 04:42:04,747 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 14600 transitions. Word has length 3238 [2021-11-04 04:42:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:42:04,749 INFO L470 AbstractCegarLoop]: Abstraction has 12374 states and 14600 transitions. [2021-11-04 04:42:04,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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) [2021-11-04 04:42:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 14600 transitions. [2021-11-04 04:42:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3248 [2021-11-04 04:42:04,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:42:04,809 INFO L514 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 112, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:42:04,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-04 04:42:05,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-04 04:42:05,010 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 04:42:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:42:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -229997354, now seen corresponding path program 1 times [2021-11-04 04:42:05,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:42:05,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270177134] [2021-11-04 04:42:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:42:05,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:42:05,450 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 04:42:05,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260485046] [2021-11-04 04:42:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:42:05,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:42:05,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:42:05,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:42:05,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-04 04:42:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:42:10,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 31604 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 04:42:10,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:42:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 102481 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102474 trivial. 0 not checked. [2021-11-04 04:42:14,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:42:14,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:42:14,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270177134] [2021-11-04 04:42:14,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 04:42:14,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260485046] [2021-11-04 04:42:14,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260485046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:42:14,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:42:14,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:42:14,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724388680] [2021-11-04 04:42:14,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:42:14,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:42:14,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:42:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:42:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:42:14,904 INFO L87 Difference]: Start difference. First operand 12374 states and 14600 transitions. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 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) Killed by 15