./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 5f08f0f0 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-5f08f0f [2021-11-05 16:47:32,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:47:32,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:47:32,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:47:32,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:47:32,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:47:32,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:47:32,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:47:32,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:47:32,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:47:32,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:47:32,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:47:32,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:47:32,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:47:32,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:47:32,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:47:32,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:47:32,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:47:32,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:47:32,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:47:32,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:47:32,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:47:32,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:47:32,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:47:32,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:47:32,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:47:32,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:47:32,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:47:32,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:47:32,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:47:32,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:47:32,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:47:32,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:47:32,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:47:32,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:47:32,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:47:32,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:47:32,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:47:32,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:47:32,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:47:32,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:47:32,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:47:32,196 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:47:32,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:47:32,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:47:32,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:47:32,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:47:32,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:47:32,199 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:47:32,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:47:32,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:47:32,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:47:32,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:47:32,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:47:32,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:47:32,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:47:32,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:47:32,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:47:32,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:47:32,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:47:32,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:47:32,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:47:32,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:47:32,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:47:32,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:47:32,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:47:32,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:47:32,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:47:32,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:47:32,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:47:32,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:47:32,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f [2021-11-05 16:47:32,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:47:32,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:47:32,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:47:32,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:47:32,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:47:32,465 INFO L432 ainManager$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 [2021-11-05 16:47:32,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20f8a268/e1ca6a38561c44e5b2da5c4a79f46187/FLAGcf93274b8 [2021-11-05 16:47:33,158 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:47:33,158 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 [2021-11-05 16:47:33,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20f8a268/e1ca6a38561c44e5b2da5c4a79f46187/FLAGcf93274b8 [2021-11-05 16:47:33,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20f8a268/e1ca6a38561c44e5b2da5c4a79f46187 [2021-11-05 16:47:33,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:47:33,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:47:33,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:47:33,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:47:33,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:47:33,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:47:33" (1/1) ... [2021-11-05 16:47:33,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea26a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:33, skipping insertion in model container [2021-11-05 16:47:33,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:47:33" (1/1) ... [2021-11-05 16:47:33,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:47:33,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:47:34,089 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-05 16:47:34,090 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] [2021-11-05 16:47:34,330 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] [2021-11-05 16:47:34,935 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 16:47:34,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:47:34,975 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:47:35,063 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-05 16:47:35,064 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] [2021-11-05 16:47:35,073 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] [2021-11-05 16:47:35,330 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-05 16:47:35,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:47:35,415 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:47:35,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35 WrapperNode [2021-11-05 16:47:35,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:47:35,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:47:35,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:47:35,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:47:35,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:35,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:35,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:47:35,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:47:35,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:47:35,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:47:35,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:35,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:35,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:35,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:36,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:36,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:36,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:36,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:47:36,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:47:36,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:47:36,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:47:36,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (1/1) ... [2021-11-05 16:47:36,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:47:36,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:47:36,549 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) [2021-11-05 16:47:36,557 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 [2021-11-05 16:47:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 16:47:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:47:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:47:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:47:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:47:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure he_ioctl [2021-11-05 16:47:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure he_ioctl [2021-11-05 16:47:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:47:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:47:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:47:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-05 16:47:36,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-05 16:47:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:47:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:47:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:47:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:47:36,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:47:45,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:47:45,721 INFO L299 CfgBuilder]: Removed 3920 assume(true) statements. [2021-11-05 16:47:45,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:47:45 BoogieIcfgContainer [2021-11-05 16:47:45,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:47:45,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:47:45,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:47:45,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:47:45,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:47:33" (1/3) ... [2021-11-05 16:47:45,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685819d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:47:45, skipping insertion in model container [2021-11-05 16:47:45,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:47:35" (2/3) ... [2021-11-05 16:47:45,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685819d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:47:45, skipping insertion in model container [2021-11-05 16:47:45,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:47:45" (3/3) ... [2021-11-05 16:47:45,732 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 [2021-11-05 16:47:45,736 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:47:45,736 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-05 16:47:45,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:47:45,796 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 [2021-11-05 16:47:45,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-05 16:47:45,839 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) [2021-11-05 16:47:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 16:47:45,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:45,848 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] [2021-11-05 16:47:45,849 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)] === [2021-11-05 16:47:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1581002451, now seen corresponding path program 1 times [2021-11-05 16:47:45,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:45,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831000064] [2021-11-05 16:47:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:45,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:47:46,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:46,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831000064] [2021-11-05 16:47:46,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831000064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:46,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:46,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:46,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002324248] [2021-11-05 16:47:46,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:46,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:46,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:46,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:46,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:46,389 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) [2021-11-05 16:47:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:46,714 INFO L93 Difference]: Finished difference Result 9019 states and 11589 transitions. [2021-11-05 16:47:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:46,718 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 [2021-11-05 16:47:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:46,755 INFO L225 Difference]: With dead ends: 9019 [2021-11-05 16:47:46,755 INFO L226 Difference]: Without dead ends: 5642 [2021-11-05 16:47:46,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:46,774 INFO L933 BasicCegarLoop]: 4254 mSDtfsCounter, 3018 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.90ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.69ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:46,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3018 Valid, 8435 Invalid, 42 Unknown, 0 Unchecked, 23.90ms Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 95.69ms Time] [2021-11-05 16:47:46,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-11-05 16:47:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5199. [2021-11-05 16:47:46,952 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) [2021-11-05 16:47:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6589 transitions. [2021-11-05 16:47:46,970 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6589 transitions. Word has length 30 [2021-11-05 16:47:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:46,971 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 6589 transitions. [2021-11-05 16:47:46,971 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) [2021-11-05 16:47:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6589 transitions. [2021-11-05 16:47:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-05 16:47:46,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:46,977 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] [2021-11-05 16:47:46,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:47:46,977 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)] === [2021-11-05 16:47:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:46,979 INFO L85 PathProgramCache]: Analyzing trace with hash 887517176, now seen corresponding path program 1 times [2021-11-05 16:47:46,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:46,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062393544] [2021-11-05 16:47:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:46,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:47:47,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:47,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062393544] [2021-11-05 16:47:47,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062393544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:47,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:47,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:47,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678299655] [2021-11-05 16:47:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:47,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:47,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:47,111 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) [2021-11-05 16:47:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:47,271 INFO L93 Difference]: Finished difference Result 11503 states and 14673 transitions. [2021-11-05 16:47:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:47,273 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 [2021-11-05 16:47:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:47,292 INFO L225 Difference]: With dead ends: 11503 [2021-11-05 16:47:47,292 INFO L226 Difference]: Without dead ends: 6332 [2021-11-05 16:47:47,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:47,307 INFO L933 BasicCegarLoop]: 5396 mSDtfsCounter, 1390 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 9547 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.69ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:47,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 9547 Invalid, 11 Unknown, 0 Unchecked, 9.45ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 37.69ms Time] [2021-11-05 16:47:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-11-05 16:47:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 6324. [2021-11-05 16:47:47,439 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) [2021-11-05 16:47:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8111 transitions. [2021-11-05 16:47:47,457 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8111 transitions. Word has length 32 [2021-11-05 16:47:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:47,458 INFO L470 AbstractCegarLoop]: Abstraction has 6324 states and 8111 transitions. [2021-11-05 16:47:47,458 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) [2021-11-05 16:47:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8111 transitions. [2021-11-05 16:47:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 16:47:47,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:47,459 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] [2021-11-05 16:47:47,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:47:47,460 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)] === [2021-11-05 16:47:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1301149159, now seen corresponding path program 1 times [2021-11-05 16:47:47,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:47,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958561748] [2021-11-05 16:47:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:47,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:47:47,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:47,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958561748] [2021-11-05 16:47:47,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958561748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:47,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:47,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:47,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833015660] [2021-11-05 16:47:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:47,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:47,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:47,548 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) [2021-11-05 16:47:49,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:49,825 INFO L93 Difference]: Finished difference Result 13765 states and 17737 transitions. [2021-11-05 16:47:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:49,826 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 [2021-11-05 16:47:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:49,848 INFO L225 Difference]: With dead ends: 13765 [2021-11-05 16:47:49,848 INFO L226 Difference]: Without dead ends: 7469 [2021-11-05 16:47:49,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:49,860 INFO L933 BasicCegarLoop]: 5554 mSDtfsCounter, 3604 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2029.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 7493 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2129.42ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:49,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3604 Valid, 7493 Invalid, 15 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2129.42ms Time] [2021-11-05 16:47:49,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2021-11-05 16:47:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7461. [2021-11-05 16:47:50,094 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) [2021-11-05 16:47:50,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 9649 transitions. [2021-11-05 16:47:50,112 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 9649 transitions. Word has length 45 [2021-11-05 16:47:50,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:50,112 INFO L470 AbstractCegarLoop]: Abstraction has 7461 states and 9649 transitions. [2021-11-05 16:47:50,113 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) [2021-11-05 16:47:50,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 9649 transitions. [2021-11-05 16:47:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 16:47:50,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:50,114 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] [2021-11-05 16:47:50,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:47:50,115 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)] === [2021-11-05 16:47:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash -806942872, now seen corresponding path program 1 times [2021-11-05 16:47:50,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:50,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434593089] [2021-11-05 16:47:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:50,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:47:50,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:50,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434593089] [2021-11-05 16:47:50,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434593089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:50,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:50,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:47:50,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16644545] [2021-11-05 16:47:50,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:50,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:50,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:50,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:50,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:50,211 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) [2021-11-05 16:47:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:50,436 INFO L93 Difference]: Finished difference Result 7461 states and 9649 transitions. [2021-11-05 16:47:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:50,436 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 [2021-11-05 16:47:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:50,460 INFO L225 Difference]: With dead ends: 7461 [2021-11-05 16:47:50,460 INFO L226 Difference]: Without dead ends: 7443 [2021-11-05 16:47:50,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:50,465 INFO L933 BasicCegarLoop]: 4166 mSDtfsCounter, 2588 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.50ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.01ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:50,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 5624 Invalid, 101 Unknown, 0 Unchecked, 7.50ms Time], IncrementalHoareTripleChecker [52 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 110.01ms Time] [2021-11-05 16:47:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2021-11-05 16:47:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 7443. [2021-11-05 16:47:50,628 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) [2021-11-05 16:47:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 9622 transitions. [2021-11-05 16:47:50,641 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 9622 transitions. Word has length 49 [2021-11-05 16:47:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:50,643 INFO L470 AbstractCegarLoop]: Abstraction has 7443 states and 9622 transitions. [2021-11-05 16:47:50,643 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) [2021-11-05 16:47:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 9622 transitions. [2021-11-05 16:47:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 16:47:50,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:50,647 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] [2021-11-05 16:47:50,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:47:50,647 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)] === [2021-11-05 16:47:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash -90544357, now seen corresponding path program 1 times [2021-11-05 16:47:50,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:50,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455292955] [2021-11-05 16:47:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:50,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 16:47:50,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:50,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455292955] [2021-11-05 16:47:50,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455292955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:50,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:50,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:50,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058613767] [2021-11-05 16:47:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:50,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:50,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:50,771 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) [2021-11-05 16:47:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:50,904 INFO L93 Difference]: Finished difference Result 14864 states and 19223 transitions. [2021-11-05 16:47:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:50,905 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 [2021-11-05 16:47:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:50,919 INFO L225 Difference]: With dead ends: 14864 [2021-11-05 16:47:50,920 INFO L226 Difference]: Without dead ends: 7449 [2021-11-05 16:47:50,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:50,934 INFO L933 BasicCegarLoop]: 4173 mSDtfsCounter, 0 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8336 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.57ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:50,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8336 Invalid, 14 Unknown, 0 Unchecked, 7.00ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 12.57ms Time] [2021-11-05 16:47:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2021-11-05 16:47:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 7449. [2021-11-05 16:47:51,122 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) [2021-11-05 16:47:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7449 states to 7449 states and 9628 transitions. [2021-11-05 16:47:51,138 INFO L78 Accepts]: Start accepts. Automaton has 7449 states and 9628 transitions. Word has length 74 [2021-11-05 16:47:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:51,138 INFO L470 AbstractCegarLoop]: Abstraction has 7449 states and 9628 transitions. [2021-11-05 16:47:51,138 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) [2021-11-05 16:47:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7449 states and 9628 transitions. [2021-11-05 16:47:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 16:47:51,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:51,142 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] [2021-11-05 16:47:51,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:47:51,142 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)] === [2021-11-05 16:47:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash 382366977, now seen corresponding path program 1 times [2021-11-05 16:47:51,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:51,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765192929] [2021-11-05 16:47:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:51,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:47:51,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:51,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765192929] [2021-11-05 16:47:51,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765192929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:47:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062658297] [2021-11-05 16:47:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:51,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:47:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:47:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:47:51,287 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) [2021-11-05 16:47:53,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:47:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:53,811 INFO L93 Difference]: Finished difference Result 19618 states and 25238 transitions. [2021-11-05 16:47:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:47:53,811 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 [2021-11-05 16:47:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:53,835 INFO L225 Difference]: With dead ends: 19618 [2021-11-05 16:47:53,836 INFO L226 Difference]: Without dead ends: 12197 [2021-11-05 16:47:53,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.43ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:47:53,854 INFO L933 BasicCegarLoop]: 6584 mSDtfsCounter, 6166 mSDsluCounter, 16964 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2055.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6166 SdHoareTripleChecker+Valid, 23548 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.28ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2163.11ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:53,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6166 Valid, 23548 Invalid, 38 Unknown, 0 Unchecked, 29.28ms Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2163.11ms Time] [2021-11-05 16:47:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12197 states. [2021-11-05 16:47:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12197 to 7462. [2021-11-05 16:47:54,089 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) [2021-11-05 16:47:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 9643 transitions. [2021-11-05 16:47:54,105 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 9643 transitions. Word has length 76 [2021-11-05 16:47:54,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:54,105 INFO L470 AbstractCegarLoop]: Abstraction has 7462 states and 9643 transitions. [2021-11-05 16:47:54,106 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) [2021-11-05 16:47:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 9643 transitions. [2021-11-05 16:47:54,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 16:47:54,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:54,109 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] [2021-11-05 16:47:54,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:47:54,109 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)] === [2021-11-05 16:47:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash 805068803, now seen corresponding path program 1 times [2021-11-05 16:47:54,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:54,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875991739] [2021-11-05 16:47:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:54,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:47:54,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:54,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875991739] [2021-11-05 16:47:54,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875991739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:54,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:54,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:47:54,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059337236] [2021-11-05 16:47:54,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:54,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:47:54,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:54,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:47:54,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:47:54,256 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) [2021-11-05 16:47:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:55,263 INFO L93 Difference]: Finished difference Result 36139 states and 46688 transitions. [2021-11-05 16:47:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:47:55,264 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 [2021-11-05 16:47:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:55,318 INFO L225 Difference]: With dead ends: 36139 [2021-11-05 16:47:55,318 INFO L226 Difference]: Without dead ends: 28705 [2021-11-05 16:47:55,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.04ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:47:55,337 INFO L933 BasicCegarLoop]: 6607 mSDtfsCounter, 22148 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22150 SdHoareTripleChecker+Valid, 23281 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.74ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.77ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:55,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22150 Valid, 23281 Invalid, 182 Unknown, 0 Unchecked, 40.74ms Time], IncrementalHoareTripleChecker [35 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 151.77ms Time] [2021-11-05 16:47:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28705 states. [2021-11-05 16:47:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28705 to 7468. [2021-11-05 16:47:55,700 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) [2021-11-05 16:47:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 9649 transitions. [2021-11-05 16:47:55,714 INFO L78 Accepts]: Start accepts. Automaton has 7468 states and 9649 transitions. Word has length 76 [2021-11-05 16:47:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:55,715 INFO L470 AbstractCegarLoop]: Abstraction has 7468 states and 9649 transitions. [2021-11-05 16:47:55,715 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) [2021-11-05 16:47:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 7468 states and 9649 transitions. [2021-11-05 16:47:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 16:47:55,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:55,718 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] [2021-11-05 16:47:55,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:47:55,719 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)] === [2021-11-05 16:47:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash -653223961, now seen corresponding path program 1 times [2021-11-05 16:47:55,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:55,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574793032] [2021-11-05 16:47:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:55,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:47:55,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:55,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574793032] [2021-11-05 16:47:55,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574793032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:55,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:55,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:47:55,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408367889] [2021-11-05 16:47:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:55,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:47:55,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:47:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:47:55,968 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) [2021-11-05 16:47:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:57,068 INFO L93 Difference]: Finished difference Result 27654 states and 36186 transitions. [2021-11-05 16:47:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:47:57,070 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 [2021-11-05 16:47:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:57,113 INFO L225 Difference]: With dead ends: 27654 [2021-11-05 16:47:57,114 INFO L226 Difference]: Without dead ends: 20214 [2021-11-05 16:47:57,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.52ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:47:57,136 INFO L933 BasicCegarLoop]: 7815 mSDtfsCounter, 16835 mSDsluCounter, 14700 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16837 SdHoareTripleChecker+Valid, 22515 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.60ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.55ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:57,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16837 Valid, 22515 Invalid, 45 Unknown, 0 Unchecked, 32.60ms Time], IncrementalHoareTripleChecker [13 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 122.55ms Time] [2021-11-05 16:47:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20214 states. [2021-11-05 16:47:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20214 to 7050. [2021-11-05 16:47:57,581 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) [2021-11-05 16:47:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 9122 transitions. [2021-11-05 16:47:57,596 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 9122 transitions. Word has length 78 [2021-11-05 16:47:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:57,596 INFO L470 AbstractCegarLoop]: Abstraction has 7050 states and 9122 transitions. [2021-11-05 16:47:57,596 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) [2021-11-05 16:47:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 9122 transitions. [2021-11-05 16:47:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-05 16:47:57,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:57,604 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] [2021-11-05 16:47:57,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:47:57,604 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)] === [2021-11-05 16:47:57,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash -741958678, now seen corresponding path program 1 times [2021-11-05 16:47:57,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:57,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190329565] [2021-11-05 16:47:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:57,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:47:57,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:57,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190329565] [2021-11-05 16:47:57,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190329565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:57,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:57,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:47:57,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584569601] [2021-11-05 16:47:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:57,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:47:57,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:47:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:47:57,803 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) [2021-11-05 16:47:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:58,440 INFO L93 Difference]: Finished difference Result 15500 states and 20050 transitions. [2021-11-05 16:47:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:47:58,445 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 [2021-11-05 16:47:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:58,462 INFO L225 Difference]: With dead ends: 15500 [2021-11-05 16:47:58,462 INFO L226 Difference]: Without dead ends: 8478 [2021-11-05 16:47:58,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.80ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:47:58,475 INFO L933 BasicCegarLoop]: 4938 mSDtfsCounter, 2194 mSDsluCounter, 9093 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 14031 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.61ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 211.04ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:58,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 14031 Invalid, 24 Unknown, 0 Unchecked, 10.61ms Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 211.04ms Time] [2021-11-05 16:47:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-11-05 16:47:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 7052. [2021-11-05 16:47:58,824 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) [2021-11-05 16:47:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 9124 transitions. [2021-11-05 16:47:58,838 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 9124 transitions. Word has length 89 [2021-11-05 16:47:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:47:58,838 INFO L470 AbstractCegarLoop]: Abstraction has 7052 states and 9124 transitions. [2021-11-05 16:47:58,838 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) [2021-11-05 16:47:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 9124 transitions. [2021-11-05 16:47:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-05 16:47:58,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:47:58,844 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] [2021-11-05 16:47:58,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 16:47:58,844 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)] === [2021-11-05 16:47:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:47:58,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2074368120, now seen corresponding path program 1 times [2021-11-05 16:47:58,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:47:58,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233883391] [2021-11-05 16:47:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:47:58,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:47:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:47:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:47:58,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:47:58,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233883391] [2021-11-05 16:47:58,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233883391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:47:58,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:47:58,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:47:58,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170615307] [2021-11-05 16:47:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:47:58,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:47:58,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:47:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:47:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:58,978 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) [2021-11-05 16:47:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:47:59,676 INFO L93 Difference]: Finished difference Result 14216 states and 18381 transitions. [2021-11-05 16:47:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:47:59,683 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 [2021-11-05 16:47:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:47:59,695 INFO L225 Difference]: With dead ends: 14216 [2021-11-05 16:47:59,695 INFO L226 Difference]: Without dead ends: 7192 [2021-11-05 16:47:59,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:47:59,708 INFO L933 BasicCegarLoop]: 4161 mSDtfsCounter, 73 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 246.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 8312 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 256.53ms IncrementalHoareTripleChecker+Time [2021-11-05 16:47:59,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 8312 Invalid, 41 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 256.53ms Time] [2021-11-05 16:47:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2021-11-05 16:48:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 7062. [2021-11-05 16:48:00,082 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) [2021-11-05 16:48:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 9134 transitions. [2021-11-05 16:48:00,101 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 9134 transitions. Word has length 166 [2021-11-05 16:48:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:00,102 INFO L470 AbstractCegarLoop]: Abstraction has 7062 states and 9134 transitions. [2021-11-05 16:48:00,102 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) [2021-11-05 16:48:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 9134 transitions. [2021-11-05 16:48:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-05 16:48:00,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:00,111 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] [2021-11-05 16:48:00,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 16:48:00,111 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)] === [2021-11-05 16:48:00,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash 359465740, now seen corresponding path program 1 times [2021-11-05 16:48:00,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:00,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073134578] [2021-11-05 16:48:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:00,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:48:00,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:00,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073134578] [2021-11-05 16:48:00,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073134578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:48:00,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:48:00,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:48:00,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114153825] [2021-11-05 16:48:00,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:48:00,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:48:00,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:48:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:00,272 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) [2021-11-05 16:48:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:00,706 INFO L93 Difference]: Finished difference Result 14174 states and 18325 transitions. [2021-11-05 16:48:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:48:00,707 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 [2021-11-05 16:48:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:00,720 INFO L225 Difference]: With dead ends: 14174 [2021-11-05 16:48:00,721 INFO L226 Difference]: Without dead ends: 7140 [2021-11-05 16:48:00,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:00,733 INFO L933 BasicCegarLoop]: 4163 mSDtfsCounter, 33 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 8299 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.19ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.61ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:00,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 8299 Invalid, 55 Unknown, 0 Unchecked, 6.19ms Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 45.61ms Time] [2021-11-05 16:48:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-11-05 16:48:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 7074. [2021-11-05 16:48:01,099 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) [2021-11-05 16:48:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7074 states to 7074 states and 9146 transitions. [2021-11-05 16:48:01,113 INFO L78 Accepts]: Start accepts. Automaton has 7074 states and 9146 transitions. Word has length 188 [2021-11-05 16:48:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:01,114 INFO L470 AbstractCegarLoop]: Abstraction has 7074 states and 9146 transitions. [2021-11-05 16:48:01,114 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) [2021-11-05 16:48:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7074 states and 9146 transitions. [2021-11-05 16:48:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-05 16:48:01,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:01,120 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] [2021-11-05 16:48:01,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 16:48:01,120 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)] === [2021-11-05 16:48:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash 476710264, now seen corresponding path program 1 times [2021-11-05 16:48:01,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:01,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866990445] [2021-11-05 16:48:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:01,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:48:01,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:01,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866990445] [2021-11-05 16:48:01,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866990445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:48:01,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885395030] [2021-11-05 16:48:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:01,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:01,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:01,278 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) [2021-11-05 16:48:01,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:48:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:02,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:48:02,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:48:02,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:48:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:48:02,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885395030] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:48:02,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:48:02,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 16:48:02,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42949624] [2021-11-05 16:48:02,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:48:02,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:48:02,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:48:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:48:02,957 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) [2021-11-05 16:48:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:03,511 INFO L93 Difference]: Finished difference Result 14378 states and 18559 transitions. [2021-11-05 16:48:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:48:03,512 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 [2021-11-05 16:48:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:03,521 INFO L225 Difference]: With dead ends: 14378 [2021-11-05 16:48:03,522 INFO L226 Difference]: Without dead ends: 7332 [2021-11-05 16:48:03,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.70ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:48:03,532 INFO L933 BasicCegarLoop]: 4154 mSDtfsCounter, 178 mSDsluCounter, 12441 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 154.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 16595 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.36ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.40ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:03,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 16595 Invalid, 226 Unknown, 0 Unchecked, 9.36ms Time], IncrementalHoareTripleChecker [58 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 181.40ms Time] [2021-11-05 16:48:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-11-05 16:48:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 7308. [2021-11-05 16:48:03,923 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) [2021-11-05 16:48:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 9380 transitions. [2021-11-05 16:48:03,935 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 9380 transitions. Word has length 227 [2021-11-05 16:48:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:03,936 INFO L470 AbstractCegarLoop]: Abstraction has 7308 states and 9380 transitions. [2021-11-05 16:48:03,936 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) [2021-11-05 16:48:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 9380 transitions. [2021-11-05 16:48:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-05 16:48:03,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:03,943 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] [2021-11-05 16:48:03,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:04,159 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 [2021-11-05 16:48:04,160 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)] === [2021-11-05 16:48:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1755828948, now seen corresponding path program 2 times [2021-11-05 16:48:04,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:04,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775049648] [2021-11-05 16:48:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:04,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-11-05 16:48:04,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:04,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775049648] [2021-11-05 16:48:04,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775049648] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:48:04,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584421693] [2021-11-05 16:48:04,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:48:04,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:04,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:04,351 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) [2021-11-05 16:48:04,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 16:48:06,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:48:06,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:48:06,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 4319 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 16:48:06,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-05 16:48:07,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:48:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-05 16:48:07,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584421693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:48:07,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:48:07,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2021-11-05 16:48:07,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025694878] [2021-11-05 16:48:07,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:48:07,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 16:48:07,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 16:48:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-05 16:48:07,975 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) [2021-11-05 16:48:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:09,551 INFO L93 Difference]: Finished difference Result 16306 states and 20697 transitions. [2021-11-05 16:48:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 16:48:09,558 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 [2021-11-05 16:48:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:09,570 INFO L225 Difference]: With dead ends: 16306 [2021-11-05 16:48:09,570 INFO L226 Difference]: Without dead ends: 9026 [2021-11-05 16:48:09,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 172.58ms TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-05 16:48:09,578 INFO L933 BasicCegarLoop]: 4158 mSDtfsCounter, 1664 mSDsluCounter, 20820 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 681.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 24978 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.11ms SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 804.83ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:09,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1664 Valid, 24978 Invalid, 1019 Unknown, 0 Unchecked, 15.11ms Time], IncrementalHoareTripleChecker [375 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 804.83ms Time] [2021-11-05 16:48:09,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2021-11-05 16:48:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 8132. [2021-11-05 16:48:10,000 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) [2021-11-05 16:48:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10220 transitions. [2021-11-05 16:48:10,017 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10220 transitions. Word has length 344 [2021-11-05 16:48:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:10,017 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 10220 transitions. [2021-11-05 16:48:10,018 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) [2021-11-05 16:48:10,018 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10220 transitions. [2021-11-05 16:48:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2021-11-05 16:48:10,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:10,032 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] [2021-11-05 16:48:10,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:10,247 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 [2021-11-05 16:48:10,247 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)] === [2021-11-05 16:48:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash 494058296, now seen corresponding path program 3 times [2021-11-05 16:48:10,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:10,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818870574] [2021-11-05 16:48:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:10,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2780 trivial. 0 not checked. [2021-11-05 16:48:10,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:10,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818870574] [2021-11-05 16:48:10,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818870574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:48:10,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368924108] [2021-11-05 16:48:10,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 16:48:10,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:10,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:10,949 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) [2021-11-05 16:48:10,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 16:48:13,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-05 16:48:13,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:48:13,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 16:48:13,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3657 trivial. 0 not checked. [2021-11-05 16:48:14,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:48:14,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368924108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:48:14,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:48:14,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-05 16:48:14,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305228149] [2021-11-05 16:48:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:48:14,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:48:14,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:14,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:48:14,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:48:14,122 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) [2021-11-05 16:48:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:15,048 INFO L93 Difference]: Finished difference Result 17664 states and 22246 transitions. [2021-11-05 16:48:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:48:15,049 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 [2021-11-05 16:48:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:15,064 INFO L225 Difference]: With dead ends: 17664 [2021-11-05 16:48:15,064 INFO L226 Difference]: Without dead ends: 9560 [2021-11-05 16:48:15,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.02ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:48:15,079 INFO L933 BasicCegarLoop]: 4938 mSDtfsCounter, 2194 mSDsluCounter, 9093 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 14031 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 224.50ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:15,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 14031 Invalid, 24 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [13 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 224.50ms Time] [2021-11-05 16:48:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2021-11-05 16:48:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 8132. [2021-11-05 16:48:15,547 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) [2021-11-05 16:48:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10220 transitions. [2021-11-05 16:48:15,561 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10220 transitions. Word has length 730 [2021-11-05 16:48:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:15,562 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 10220 transitions. [2021-11-05 16:48:15,562 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) [2021-11-05 16:48:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10220 transitions. [2021-11-05 16:48:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2021-11-05 16:48:15,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:15,588 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] [2021-11-05 16:48:15,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:15,796 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 [2021-11-05 16:48:15,797 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)] === [2021-11-05 16:48:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash 115068768, now seen corresponding path program 1 times [2021-11-05 16:48:15,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:15,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75311162] [2021-11-05 16:48:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:15,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:15,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:48:15,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715742610] [2021-11-05 16:48:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:15,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:15,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:15,995 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) [2021-11-05 16:48:15,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 16:48:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:17,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 12012 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:48:17,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3690 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3683 trivial. 0 not checked. [2021-11-05 16:48:19,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:48:19,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:19,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75311162] [2021-11-05 16:48:19,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:48:19,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715742610] [2021-11-05 16:48:19,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715742610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:48:19,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:48:19,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:48:19,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096321351] [2021-11-05 16:48:19,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:48:19,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:48:19,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:48:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:19,290 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) [2021-11-05 16:48:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:19,745 INFO L93 Difference]: Finished difference Result 16290 states and 20473 transitions. [2021-11-05 16:48:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:48:19,746 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 [2021-11-05 16:48:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:19,758 INFO L225 Difference]: With dead ends: 16290 [2021-11-05 16:48:19,758 INFO L226 Difference]: Without dead ends: 8186 [2021-11-05 16:48:19,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:19,770 INFO L933 BasicCegarLoop]: 4166 mSDtfsCounter, 27 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8326 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.69ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.86ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:19,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 8326 Invalid, 25 Unknown, 0 Unchecked, 4.69ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 24.86ms Time] [2021-11-05 16:48:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8186 states. [2021-11-05 16:48:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8186 to 8138. [2021-11-05 16:48:20,285 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) [2021-11-05 16:48:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8138 states to 8138 states and 10226 transitions. [2021-11-05 16:48:20,297 INFO L78 Accepts]: Start accepts. Automaton has 8138 states and 10226 transitions. Word has length 1112 [2021-11-05 16:48:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:20,298 INFO L470 AbstractCegarLoop]: Abstraction has 8138 states and 10226 transitions. [2021-11-05 16:48:20,299 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) [2021-11-05 16:48:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8138 states and 10226 transitions. [2021-11-05 16:48:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2021-11-05 16:48:20,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:20,332 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] [2021-11-05 16:48:20,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:20,539 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 [2021-11-05 16:48:20,540 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)] === [2021-11-05 16:48:20,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1116309504, now seen corresponding path program 1 times [2021-11-05 16:48:20,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:20,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857637015] [2021-11-05 16:48:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:20,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:20,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:48:20,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038282189] [2021-11-05 16:48:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:20,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:20,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:20,687 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) [2021-11-05 16:48:20,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 16:48:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:22,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 12274 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:48:22,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3693 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3686 trivial. 0 not checked. [2021-11-05 16:48:23,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:48:23,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:23,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857637015] [2021-11-05 16:48:23,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:48:23,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038282189] [2021-11-05 16:48:23,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038282189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:48:23,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:48:23,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:48:23,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458387488] [2021-11-05 16:48:23,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:48:23,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:48:23,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:48:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:23,945 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) [2021-11-05 16:48:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:24,553 INFO L93 Difference]: Finished difference Result 16284 states and 20457 transitions. [2021-11-05 16:48:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:48:24,554 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 [2021-11-05 16:48:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:24,565 INFO L225 Difference]: With dead ends: 16284 [2021-11-05 16:48:24,565 INFO L226 Difference]: Without dead ends: 8174 [2021-11-05 16:48:24,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:24,578 INFO L933 BasicCegarLoop]: 4157 mSDtfsCounter, 17 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 8311 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.84ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:24,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 8311 Invalid, 38 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 66.84ms Time] [2021-11-05 16:48:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2021-11-05 16:48:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 8140. [2021-11-05 16:48:25,078 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) [2021-11-05 16:48:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10228 transitions. [2021-11-05 16:48:25,091 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10228 transitions. Word has length 1139 [2021-11-05 16:48:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:25,092 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10228 transitions. [2021-11-05 16:48:25,093 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) [2021-11-05 16:48:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10228 transitions. [2021-11-05 16:48:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-05 16:48:25,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:25,113 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] [2021-11-05 16:48:25,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:25,327 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 [2021-11-05 16:48:25,328 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)] === [2021-11-05 16:48:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1022085076, now seen corresponding path program 1 times [2021-11-05 16:48:25,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:25,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027735014] [2021-11-05 16:48:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:25,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:25,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:48:25,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780340385] [2021-11-05 16:48:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:25,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:25,494 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) [2021-11-05 16:48:25,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 16:48:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:27,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 12533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:48:27,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-05 16:48:29,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:48:29,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:29,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027735014] [2021-11-05 16:48:29,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:48:29,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780340385] [2021-11-05 16:48:29,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780340385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:48:29,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:48:29,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:48:29,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290524269] [2021-11-05 16:48:29,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:48:29,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:48:29,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:48:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:29,437 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) [2021-11-05 16:48:30,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:30,031 INFO L93 Difference]: Finished difference Result 16252 states and 20423 transitions. [2021-11-05 16:48:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:48:30,031 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 [2021-11-05 16:48:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:30,047 INFO L225 Difference]: With dead ends: 16252 [2021-11-05 16:48:30,047 INFO L226 Difference]: Without dead ends: 8140 [2021-11-05 16:48:30,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:30,063 INFO L933 BasicCegarLoop]: 4171 mSDtfsCounter, 3970 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3970 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.81ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:30,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3970 Valid, 4171 Invalid, 3 Unknown, 0 Unchecked, 5.87ms Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 3.81ms Time] [2021-11-05 16:48:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2021-11-05 16:48:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 8140. [2021-11-05 16:48:30,562 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) [2021-11-05 16:48:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10224 transitions. [2021-11-05 16:48:30,575 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10224 transitions. Word has length 1157 [2021-11-05 16:48:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:30,576 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10224 transitions. [2021-11-05 16:48:30,576 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) [2021-11-05 16:48:30,577 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10224 transitions. [2021-11-05 16:48:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-05 16:48:30,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:30,593 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] [2021-11-05 16:48:30,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:30,811 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 [2021-11-05 16:48:30,812 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)] === [2021-11-05 16:48:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1474582486, now seen corresponding path program 1 times [2021-11-05 16:48:30,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:30,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636307322] [2021-11-05 16:48:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:30,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:30,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:48:30,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560517814] [2021-11-05 16:48:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:30,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:30,977 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) [2021-11-05 16:48:30,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 16:48:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:33,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 12529 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:48:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-05 16:48:34,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:48:34,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:34,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636307322] [2021-11-05 16:48:34,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:48:34,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560517814] [2021-11-05 16:48:34,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560517814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:48:34,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:48:34,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:48:34,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842456989] [2021-11-05 16:48:34,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:48:34,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:48:34,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:34,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:48:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:34,845 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) [2021-11-05 16:48:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:35,290 INFO L93 Difference]: Finished difference Result 16252 states and 20415 transitions. [2021-11-05 16:48:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:48:35,290 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 [2021-11-05 16:48:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:35,300 INFO L225 Difference]: With dead ends: 16252 [2021-11-05 16:48:35,300 INFO L226 Difference]: Without dead ends: 8140 [2021-11-05 16:48:35,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:48:35,309 INFO L933 BasicCegarLoop]: 4170 mSDtfsCounter, 3968 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:35,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3968 Valid, 4170 Invalid, 2 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 2.00ms Time] [2021-11-05 16:48:35,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2021-11-05 16:48:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 8140. [2021-11-05 16:48:35,770 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) [2021-11-05 16:48:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10222 transitions. [2021-11-05 16:48:35,778 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10222 transitions. Word has length 1157 [2021-11-05 16:48:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:35,779 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10222 transitions. [2021-11-05 16:48:35,779 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) [2021-11-05 16:48:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10222 transitions. [2021-11-05 16:48:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-05 16:48:35,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:35,794 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] [2021-11-05 16:48:35,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:36,001 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 [2021-11-05 16:48:36,001 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)] === [2021-11-05 16:48:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash 796442516, now seen corresponding path program 1 times [2021-11-05 16:48:36,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:36,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561985138] [2021-11-05 16:48:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:36,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:36,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:48:36,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163827206] [2021-11-05 16:48:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:36,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:36,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:36,151 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) [2021-11-05 16:48:36,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 16:48:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:48:38,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 12525 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 16:48:38,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-05 16:48:39,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:48:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-05 16:48:41,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:41,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561985138] [2021-11-05 16:48:41,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:48:41,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163827206] [2021-11-05 16:48:41,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163827206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:48:41,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:48:41,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-05 16:48:41,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135123432] [2021-11-05 16:48:41,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 16:48:41,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 16:48:41,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 16:48:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:48:41,557 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) [2021-11-05 16:48:43,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:43,419 INFO L93 Difference]: Finished difference Result 23543 states and 29607 transitions. [2021-11-05 16:48:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 16:48:43,420 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 [2021-11-05 16:48:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:43,442 INFO L225 Difference]: With dead ends: 23543 [2021-11-05 16:48:43,442 INFO L226 Difference]: Without dead ends: 15431 [2021-11-05 16:48:43,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2312 GetRequests, 2306 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.15ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:48:43,457 INFO L933 BasicCegarLoop]: 5457 mSDtfsCounter, 10866 mSDsluCounter, 11044 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 666.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10870 SdHoareTripleChecker+Valid, 16501 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.49ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 721.93ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:43,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10870 Valid, 16501 Invalid, 170 Unknown, 0 Unchecked, 17.49ms Time], IncrementalHoareTripleChecker [67 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 721.93ms Time] [2021-11-05 16:48:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15431 states. [2021-11-05 16:48:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15431 to 9468. [2021-11-05 16:48:44,131 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) [2021-11-05 16:48:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9468 states to 9468 states and 11596 transitions. [2021-11-05 16:48:44,141 INFO L78 Accepts]: Start accepts. Automaton has 9468 states and 11596 transitions. Word has length 1157 [2021-11-05 16:48:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:44,141 INFO L470 AbstractCegarLoop]: Abstraction has 9468 states and 11596 transitions. [2021-11-05 16:48:44,141 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) [2021-11-05 16:48:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 9468 states and 11596 transitions. [2021-11-05 16:48:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1807 [2021-11-05 16:48:44,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:44,166 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] [2021-11-05 16:48:44,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 16:48:44,367 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 [2021-11-05 16:48:44,367 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)] === [2021-11-05 16:48:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:48:44,368 INFO L85 PathProgramCache]: Analyzing trace with hash -253202446, now seen corresponding path program 2 times [2021-11-05 16:48:44,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:48:44,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126449793] [2021-11-05 16:48:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:48:44,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:48:44,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:48:44,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363723277] [2021-11-05 16:48:44,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:48:44,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:48:44,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:48:44,589 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) [2021-11-05 16:48:44,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 16:48:50,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:48:50,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:48:50,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 18464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 16:48:50,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:48:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-05 16:48:52,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:48:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-05 16:48:55,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:48:55,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126449793] [2021-11-05 16:48:55,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:48:55,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363723277] [2021-11-05 16:48:55,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363723277] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:48:55,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:48:55,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-05 16:48:55,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538170732] [2021-11-05 16:48:55,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 16:48:55,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 16:48:55,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:48:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 16:48:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-05 16:48:55,600 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) [2021-11-05 16:48:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:48:58,626 INFO L93 Difference]: Finished difference Result 28587 states and 35109 transitions. [2021-11-05 16:48:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 16:48:58,627 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 [2021-11-05 16:48:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:48:58,658 INFO L225 Difference]: With dead ends: 28587 [2021-11-05 16:48:58,659 INFO L226 Difference]: Without dead ends: 19147 [2021-11-05 16:48:58,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3610 GetRequests, 3596 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.60ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-05 16:48:58,680 INFO L933 BasicCegarLoop]: 5457 mSDtfsCounter, 11981 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1100.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11985 SdHoareTripleChecker+Valid, 21935 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.19ms SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1199.85ms IncrementalHoareTripleChecker+Time [2021-11-05 16:48:58,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11985 Valid, 21935 Invalid, 350 Unknown, 0 Unchecked, 23.19ms Time], IncrementalHoareTripleChecker [157 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 1199.85ms Time] [2021-11-05 16:48:58,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2021-11-05 16:48:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 12368. [2021-11-05 16:48:59,790 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) [2021-11-05 16:48:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12368 states to 12368 states and 14594 transitions. [2021-11-05 16:48:59,808 INFO L78 Accepts]: Start accepts. Automaton has 12368 states and 14594 transitions. Word has length 1806 [2021-11-05 16:48:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:48:59,809 INFO L470 AbstractCegarLoop]: Abstraction has 12368 states and 14594 transitions. [2021-11-05 16:48:59,809 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) [2021-11-05 16:48:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 12368 states and 14594 transitions. [2021-11-05 16:48:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3224 [2021-11-05 16:48:59,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:48:59,869 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] [2021-11-05 16:48:59,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 16:49:00,070 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 [2021-11-05 16:49:00,070 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)] === [2021-11-05 16:49:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:00,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2091651000, now seen corresponding path program 3 times [2021-11-05 16:49:00,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:00,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464823529] [2021-11-05 16:49:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:00,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:00,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:49:00,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981340064] [2021-11-05 16:49:00,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 16:49:00,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:00,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:00,499 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) [2021-11-05 16:49:00,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 16:49:03,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-05 16:49:03,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:49:03,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 6426 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:49:03,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-05 16:49:07,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:49:07,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:07,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464823529] [2021-11-05 16:49:07,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:49:07,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981340064] [2021-11-05 16:49:07,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981340064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:07,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:07,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:49:07,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335808357] [2021-11-05 16:49:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:07,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:49:07,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:07,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:49:07,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:49:07,583 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) [2021-11-05 16:49:09,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:09,454 INFO L93 Difference]: Finished difference Result 33976 states and 39577 transitions. [2021-11-05 16:49:09,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:49:09,455 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 [2021-11-05 16:49:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:09,485 INFO L225 Difference]: With dead ends: 33976 [2021-11-05 16:49:09,485 INFO L226 Difference]: Without dead ends: 21636 [2021-11-05 16:49:09,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3224 GetRequests, 3221 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:49:09,504 INFO L933 BasicCegarLoop]: 6299 mSDtfsCounter, 4728 mSDsluCounter, 10464 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 16763 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.78ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:09,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 16763 Invalid, 11 Unknown, 0 Unchecked, 12.35ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 16.78ms Time] [2021-11-05 16:49:09,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21636 states. [2021-11-05 16:49:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21636 to 12370. [2021-11-05 16:49:10,630 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) [2021-11-05 16:49:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12370 states to 12370 states and 14596 transitions. [2021-11-05 16:49:10,643 INFO L78 Accepts]: Start accepts. Automaton has 12370 states and 14596 transitions. Word has length 3223 [2021-11-05 16:49:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:10,645 INFO L470 AbstractCegarLoop]: Abstraction has 12370 states and 14596 transitions. [2021-11-05 16:49:10,645 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) [2021-11-05 16:49:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 12370 states and 14596 transitions. [2021-11-05 16:49:10,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3230 [2021-11-05 16:49:10,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:10,702 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] [2021-11-05 16:49:10,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 16:49:10,903 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 [2021-11-05 16:49:10,903 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)] === [2021-11-05 16:49:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1584409371, now seen corresponding path program 1 times [2021-11-05 16:49:10,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:10,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419714761] [2021-11-05 16:49:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:10,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:11,256 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:49:11,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708121657] [2021-11-05 16:49:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:11,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:11,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:11,257 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) [2021-11-05 16:49:11,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 16:49:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:16,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 31432 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:49:16,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-05 16:49:19,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:49:19,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:19,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419714761] [2021-11-05 16:49:19,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:49:19,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708121657] [2021-11-05 16:49:19,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708121657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:19,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:19,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:19,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413350135] [2021-11-05 16:49:19,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:19,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:19,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:19,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:19,803 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) [2021-11-05 16:49:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:20,880 INFO L93 Difference]: Finished difference Result 24730 states and 29181 transitions. [2021-11-05 16:49:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:20,882 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 [2021-11-05 16:49:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:20,897 INFO L225 Difference]: With dead ends: 24730 [2021-11-05 16:49:20,897 INFO L226 Difference]: Without dead ends: 12388 [2021-11-05 16:49:20,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3228 GetRequests, 3227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:20,913 INFO L933 BasicCegarLoop]: 4169 mSDtfsCounter, 9 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8329 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.15ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:20,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8329 Invalid, 14 Unknown, 0 Unchecked, 4.76ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 12.15ms Time] [2021-11-05 16:49:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12388 states. [2021-11-05 16:49:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12388 to 12372. [2021-11-05 16:49:21,887 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) [2021-11-05 16:49:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 14598 transitions. [2021-11-05 16:49:21,902 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 14598 transitions. Word has length 3229 [2021-11-05 16:49:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:21,904 INFO L470 AbstractCegarLoop]: Abstraction has 12372 states and 14598 transitions. [2021-11-05 16:49:21,905 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) [2021-11-05 16:49:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 14598 transitions. [2021-11-05 16:49:21,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3239 [2021-11-05 16:49:21,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:21,962 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] [2021-11-05 16:49:22,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 16:49:22,162 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 [2021-11-05 16:49:22,163 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)] === [2021-11-05 16:49:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -622776611, now seen corresponding path program 1 times [2021-11-05 16:49:22,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:22,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104302414] [2021-11-05 16:49:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:22,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:22,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:49:22,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981177488] [2021-11-05 16:49:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:22,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:22,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:22,492 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) [2021-11-05 16:49:22,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 16:49:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:27,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 31518 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:49:27,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 102480 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102473 trivial. 0 not checked. [2021-11-05 16:49:30,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:49:30,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:30,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104302414] [2021-11-05 16:49:30,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:49:30,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981177488] [2021-11-05 16:49:30,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981177488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:30,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:30,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:30,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088491576] [2021-11-05 16:49:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:30,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:30,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:30,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:30,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:30,826 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) [2021-11-05 16:49:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:32,103 INFO L93 Difference]: Finished difference Result 24734 states and 29185 transitions. [2021-11-05 16:49:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:32,104 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 [2021-11-05 16:49:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:32,123 INFO L225 Difference]: With dead ends: 24734 [2021-11-05 16:49:32,123 INFO L226 Difference]: Without dead ends: 12390 [2021-11-05 16:49:32,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3237 GetRequests, 3236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:32,143 INFO L933 BasicCegarLoop]: 4166 mSDtfsCounter, 18 mSDsluCounter, 4153 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8319 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.78ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:32,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 8319 Invalid, 16 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 16.78ms Time] [2021-11-05 16:49:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12390 states. [2021-11-05 16:49:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12390 to 12374. [2021-11-05 16:49:33,127 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) [2021-11-05 16:49:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 14600 transitions. [2021-11-05 16:49:33,142 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 14600 transitions. Word has length 3238 [2021-11-05 16:49:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:33,144 INFO L470 AbstractCegarLoop]: Abstraction has 12374 states and 14600 transitions. [2021-11-05 16:49:33,144 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) [2021-11-05 16:49:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 14600 transitions. [2021-11-05 16:49:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3248 [2021-11-05 16:49:33,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:33,289 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] [2021-11-05 16:49:33,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-05 16:49:33,489 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 [2021-11-05 16:49:33,489 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)] === [2021-11-05 16:49:33,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash -229997354, now seen corresponding path program 1 times [2021-11-05 16:49:33,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:33,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231774417] [2021-11-05 16:49:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:33,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:33,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:49:33,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028668105] [2021-11-05 16:49:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:33,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:33,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:33,840 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) [2021-11-05 16:49:33,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 16:49:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:38,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 31604 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:49:38,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 102481 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102474 trivial. 0 not checked. [2021-11-05 16:49:42,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:49:42,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:42,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231774417] [2021-11-05 16:49:42,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:49:42,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028668105] [2021-11-05 16:49:42,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028668105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:42,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:42,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:42,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596650596] [2021-11-05 16:49:42,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:42,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:42,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:42,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:42,017 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) [2021-11-05 16:49:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:43,081 INFO L93 Difference]: Finished difference Result 24730 states and 29183 transitions. [2021-11-05 16:49:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:43,082 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 3247 [2021-11-05 16:49:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:43,097 INFO L225 Difference]: With dead ends: 24730 [2021-11-05 16:49:43,097 INFO L226 Difference]: Without dead ends: 12384 [2021-11-05 16:49:43,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3246 GetRequests, 3245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:43,113 INFO L933 BasicCegarLoop]: 4166 mSDtfsCounter, 4 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8327 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.08ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:43,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 8327 Invalid, 17 Unknown, 0 Unchecked, 4.59ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 14.08ms Time] [2021-11-05 16:49:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2021-11-05 16:49:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 12378. [2021-11-05 16:49:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12378 states, 12357 states have (on average 1.1798980335032776) internal successors, (14580), 12359 states have internal predecessors, (14580), 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) [2021-11-05 16:49:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12378 states to 12378 states and 14604 transitions. [2021-11-05 16:49:44,087 INFO L78 Accepts]: Start accepts. Automaton has 12378 states and 14604 transitions. Word has length 3247 [2021-11-05 16:49:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:44,089 INFO L470 AbstractCegarLoop]: Abstraction has 12378 states and 14604 transitions. [2021-11-05 16:49:44,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-05 16:49:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 12378 states and 14604 transitions. [2021-11-05 16:49:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3250 [2021-11-05 16:49:44,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:44,147 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, 1, 1] [2021-11-05 16:49:44,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-05 16:49:44,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-05 16:49:44,348 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:49:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash 264553778, now seen corresponding path program 1 times [2021-11-05 16:49:44,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:44,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669025067] [2021-11-05 16:49:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:44,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:44,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:49:44,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620902946] [2021-11-05 16:49:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:44,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:44,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:44,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:49:44,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 16:49:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:49:49,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 31612 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:49:49,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:49:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 102482 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102475 trivial. 0 not checked. [2021-11-05 16:49:52,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:49:52,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:49:52,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669025067] [2021-11-05 16:49:52,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:49:52,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620902946] [2021-11-05 16:49:52,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620902946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:49:52,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:49:52,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:49:52,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675791560] [2021-11-05 16:49:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:49:52,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:49:52,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:49:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:49:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:52,928 INFO L87 Difference]: Start difference. First operand 12378 states and 14604 transitions. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2021-11-05 16:49:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:49:55,019 INFO L93 Difference]: Finished difference Result 36797 states and 43381 transitions. [2021-11-05 16:49:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:49:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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 3249 [2021-11-05 16:49:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:49:55,057 INFO L225 Difference]: With dead ends: 36797 [2021-11-05 16:49:55,057 INFO L226 Difference]: Without dead ends: 24447 [2021-11-05 16:49:55,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3248 GetRequests, 3247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:49:55,082 INFO L933 BasicCegarLoop]: 8144 mSDtfsCounter, 3997 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 12306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.08ms IncrementalHoareTripleChecker+Time [2021-11-05 16:49:55,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3999 Valid, 12306 Invalid, 17 Unknown, 0 Unchecked, 9.90ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 17.08ms Time] [2021-11-05 16:49:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24447 states. [2021-11-05 16:49:56,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24447 to 12390. [2021-11-05 16:49:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12390 states, 12369 states have (on average 1.1798851968631257) internal successors, (14594), 12371 states have internal predecessors, (14594), 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) [2021-11-05 16:49:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 14618 transitions. [2021-11-05 16:49:56,342 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 14618 transitions. Word has length 3249 [2021-11-05 16:49:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:49:56,344 INFO L470 AbstractCegarLoop]: Abstraction has 12390 states and 14618 transitions. [2021-11-05 16:49:56,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2021-11-05 16:49:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 14618 transitions. [2021-11-05 16:49:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3256 [2021-11-05 16:49:56,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:49:56,405 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:49:56,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-05 16:49:56,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:56,628 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:49:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:49:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1399361692, now seen corresponding path program 1 times [2021-11-05 16:49:56,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:49:56,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859415963] [2021-11-05 16:49:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:56,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:49:56,965 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:49:56,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406308305] [2021-11-05 16:49:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:49:56,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:49:56,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:49:56,967 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:49:56,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-05 16:50:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:50:01,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 31625 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-05 16:50:01,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:50:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 102484 backedges. 7 proven. 79639 refuted. 0 times theorem prover too weak. 22838 trivial. 0 not checked. [2021-11-05 16:50:06,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:50:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 102484 backedges. 7 proven. 79639 refuted. 0 times theorem prover too weak. 22838 trivial. 0 not checked. [2021-11-05 16:50:12,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:50:12,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859415963] [2021-11-05 16:50:12,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:50:12,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406308305] [2021-11-05 16:50:12,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406308305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:50:12,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:50:12,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-05 16:50:12,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518345312] [2021-11-05 16:50:12,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 16:50:12,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-05 16:50:12,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:50:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-05 16:50:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-05 16:50:12,311 INFO L87 Difference]: Start difference. First operand 12390 states and 14618 transitions. Second operand has 32 states, 32 states have (on average 41.0625) internal successors, (1314), 32 states have internal predecessors, (1314), 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) [2021-11-05 16:50:15,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:50:15,809 INFO L93 Difference]: Finished difference Result 31750 states and 37207 transitions. [2021-11-05 16:50:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-05 16:50:15,810 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 41.0625) internal successors, (1314), 32 states have internal predecessors, (1314), 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 3255 [2021-11-05 16:50:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:50:15,834 INFO L225 Difference]: With dead ends: 31750 [2021-11-05 16:50:15,835 INFO L226 Difference]: Without dead ends: 19388 [2021-11-05 16:50:15,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6508 GetRequests, 6478 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 345.74ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-05 16:50:15,860 INFO L933 BasicCegarLoop]: 5455 mSDtfsCounter, 15331 mSDsluCounter, 29842 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1030.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15333 SdHoareTripleChecker+Valid, 35297 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.20ms SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1138.53ms IncrementalHoareTripleChecker+Time [2021-11-05 16:50:15,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15333 Valid, 35297 Invalid, 643 Unknown, 0 Unchecked, 27.20ms Time], IncrementalHoareTripleChecker [278 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 1138.53ms Time] [2021-11-05 16:50:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19388 states. [2021-11-05 16:50:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19388 to 16778. [2021-11-05 16:50:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16778 states, 16757 states have (on average 1.1423285791012712) internal successors, (19142), 16759 states have internal predecessors, (19142), 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) [2021-11-05 16:50:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16778 states to 16778 states and 19166 transitions. [2021-11-05 16:50:17,585 INFO L78 Accepts]: Start accepts. Automaton has 16778 states and 19166 transitions. Word has length 3255 [2021-11-05 16:50:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:50:17,586 INFO L470 AbstractCegarLoop]: Abstraction has 16778 states and 19166 transitions. [2021-11-05 16:50:17,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 41.0625) internal successors, (1314), 32 states have internal predecessors, (1314), 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) [2021-11-05 16:50:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16778 states and 19166 transitions. [2021-11-05 16:50:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5402 [2021-11-05 16:50:17,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:50:17,836 INFO L514 BasicCegarLoop]: trace histogram [240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:50:17,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-05 16:50:18,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-05 16:50:18,037 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:50:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:50:18,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1462447256, now seen corresponding path program 2 times [2021-11-05 16:50:18,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:50:18,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496567779] [2021-11-05 16:50:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:18,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:50:18,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:50:18,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932176551] [2021-11-05 16:50:18,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:50:18,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:18,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:50:18,579 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:50:18,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-05 16:50:27,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:50:27,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:50:28,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 51233 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-05 16:50:28,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:50:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 416011 backedges. 7 proven. 3945 refuted. 0 times theorem prover too weak. 412059 trivial. 0 not checked. [2021-11-05 16:50:34,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:50:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 416011 backedges. 7 proven. 3945 refuted. 0 times theorem prover too weak. 412059 trivial. 0 not checked. [2021-11-05 16:50:41,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:50:41,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496567779] [2021-11-05 16:50:41,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:50:41,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932176551] [2021-11-05 16:50:41,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932176551] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:50:41,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:50:41,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-05 16:50:41,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862319183] [2021-11-05 16:50:41,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 16:50:41,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-05 16:50:41,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:50:41,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-05 16:50:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-05 16:50:41,384 INFO L87 Difference]: Start difference. First operand 16778 states and 19166 transitions. Second operand has 64 states, 64 states have (on average 18.703125) internal successors, (1197), 64 states have internal predecessors, (1197), 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) [2021-11-05 16:50:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:50:48,178 INFO L93 Difference]: Finished difference Result 41462 states and 48305 transitions. [2021-11-05 16:50:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-05 16:50:48,179 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 18.703125) internal successors, (1197), 64 states have internal predecessors, (1197), 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 5401 [2021-11-05 16:50:48,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:50:48,219 INFO L225 Difference]: With dead ends: 41462 [2021-11-05 16:50:48,219 INFO L226 Difference]: Without dead ends: 24712 [2021-11-05 16:50:48,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10800 GetRequests, 10738 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1384.74ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-05 16:50:48,248 INFO L933 BasicCegarLoop]: 5453 mSDtfsCounter, 30306 mSDsluCounter, 32115 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1261.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30308 SdHoareTripleChecker+Valid, 37568 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.58ms SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1430.07ms IncrementalHoareTripleChecker+Time [2021-11-05 16:50:48,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30308 Valid, 37568 Invalid, 850 Unknown, 0 Unchecked, 44.58ms Time], IncrementalHoareTripleChecker [391 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1430.07ms Time] [2021-11-05 16:50:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24712 states. [2021-11-05 16:50:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24712 to 17372. [2021-11-05 16:50:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17372 states, 17351 states have (on average 1.1412598697481413) internal successors, (19802), 17353 states have internal predecessors, (19802), 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) [2021-11-05 16:50:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17372 states to 17372 states and 19826 transitions. [2021-11-05 16:50:50,019 INFO L78 Accepts]: Start accepts. Automaton has 17372 states and 19826 transitions. Word has length 5401 [2021-11-05 16:50:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:50:50,023 INFO L470 AbstractCegarLoop]: Abstraction has 17372 states and 19826 transitions. [2021-11-05 16:50:50,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 18.703125) internal successors, (1197), 64 states have internal predecessors, (1197), 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) [2021-11-05 16:50:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 17372 states and 19826 transitions. [2021-11-05 16:50:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5699 [2021-11-05 16:50:50,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:50:50,239 INFO L514 BasicCegarLoop]: trace histogram [240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 62, 62, 62, 62, 62, 62, 62, 62, 62, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:50:50,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-05 16:50:50,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-05 16:50:50,440 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:50:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:50:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1575139268, now seen corresponding path program 3 times [2021-11-05 16:50:50,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:50:50,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425586983] [2021-11-05 16:50:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:50:50,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:50:51,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:50:51,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223487732] [2021-11-05 16:50:51,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 16:50:51,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:50:51,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:50:51,041 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:50:51,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-05 16:50:56,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-05 16:50:56,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:50:56,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 6453 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:50:56,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:51:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 429418 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 429411 trivial. 0 not checked. [2021-11-05 16:51:02,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:51:02,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:51:02,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425586983] [2021-11-05 16:51:02,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:51:02,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223487732] [2021-11-05 16:51:02,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223487732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:51:02,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:51:02,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:51:02,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565735053] [2021-11-05 16:51:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:51:02,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:51:02,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:51:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:51:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:51:02,872 INFO L87 Difference]: Start difference. First operand 17372 states and 19826 transitions. Second operand has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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) [2021-11-05 16:51:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:51:06,352 INFO L93 Difference]: Finished difference Result 49152 states and 55511 transitions. [2021-11-05 16:51:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:51:06,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 5698 [2021-11-05 16:51:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:51:06,397 INFO L225 Difference]: With dead ends: 49152 [2021-11-05 16:51:06,397 INFO L226 Difference]: Without dead ends: 31808 [2021-11-05 16:51:06,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5699 GetRequests, 5696 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:51:06,423 INFO L933 BasicCegarLoop]: 6436 mSDtfsCounter, 4865 mSDsluCounter, 10600 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4865 SdHoareTripleChecker+Valid, 17036 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.54ms IncrementalHoareTripleChecker+Time [2021-11-05 16:51:06,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4865 Valid, 17036 Invalid, 12 Unknown, 0 Unchecked, 12.97ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 19.54ms Time] [2021-11-05 16:51:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31808 states. [2021-11-05 16:51:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31808 to 17325. [2021-11-05 16:51:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17325 states, 17304 states have (on average 1.1410078594544615) internal successors, (19744), 17306 states have internal predecessors, (19744), 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) [2021-11-05 16:51:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17325 states to 17325 states and 19768 transitions. [2021-11-05 16:51:08,348 INFO L78 Accepts]: Start accepts. Automaton has 17325 states and 19768 transitions. Word has length 5698 [2021-11-05 16:51:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:51:08,351 INFO L470 AbstractCegarLoop]: Abstraction has 17325 states and 19768 transitions. [2021-11-05 16:51:08,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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) [2021-11-05 16:51:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 17325 states and 19768 transitions. [2021-11-05 16:51:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5781 [2021-11-05 16:51:08,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:51:08,640 INFO L514 BasicCegarLoop]: trace histogram [240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 62, 62, 62, 62, 62, 62, 62, 62, 62, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:51:08,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-05 16:51:08,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-05 16:51:08,841 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:51:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:51:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1684303142, now seen corresponding path program 1 times [2021-11-05 16:51:08,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:51:08,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265199625] [2021-11-05 16:51:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:51:08,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:51:09,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:51:09,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937686051] [2021-11-05 16:51:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:51:09,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:51:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:51:09,374 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:51:09,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-05 16:51:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:51:18,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 54976 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:51:18,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:51:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 429418 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 429411 trivial. 0 not checked. [2021-11-05 16:51:24,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:51:24,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:51:24,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265199625] [2021-11-05 16:51:24,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:51:24,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937686051] [2021-11-05 16:51:24,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937686051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:51:24,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:51:24,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:51:24,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128383385] [2021-11-05 16:51:24,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:51:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:51:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:51:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:51:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:51:24,742 INFO L87 Difference]: Start difference. First operand 17325 states and 19768 transitions. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2021-11-05 16:51:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:51:28,088 INFO L93 Difference]: Finished difference Result 47823 states and 53806 transitions. [2021-11-05 16:51:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:51:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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 5780 [2021-11-05 16:51:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:51:28,130 INFO L225 Difference]: With dead ends: 47823 [2021-11-05 16:51:28,130 INFO L226 Difference]: Without dead ends: 30526 [2021-11-05 16:51:28,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5779 GetRequests, 5778 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:51:28,160 INFO L933 BasicCegarLoop]: 6443 mSDtfsCounter, 2317 mSDsluCounter, 4166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 10609 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.76ms IncrementalHoareTripleChecker+Time [2021-11-05 16:51:28,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2317 Valid, 10609 Invalid, 9 Unknown, 0 Unchecked, 7.92ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 49.76ms Time] [2021-11-05 16:51:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30526 states. [2021-11-05 16:51:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30526 to 17327. [2021-11-05 16:51:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17327 states, 17306 states have (on average 1.140991563619554) internal successors, (19746), 17308 states have internal predecessors, (19746), 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) [2021-11-05 16:51:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17327 states to 17327 states and 19770 transitions. [2021-11-05 16:51:30,094 INFO L78 Accepts]: Start accepts. Automaton has 17327 states and 19770 transitions. Word has length 5780 [2021-11-05 16:51:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:51:30,097 INFO L470 AbstractCegarLoop]: Abstraction has 17327 states and 19770 transitions. [2021-11-05 16:51:30,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2021-11-05 16:51:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 17327 states and 19770 transitions. [2021-11-05 16:51:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5793 [2021-11-05 16:51:30,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:51:30,263 INFO L514 BasicCegarLoop]: trace histogram [240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 62, 62, 62, 62, 62, 62, 62, 62, 62, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:51:30,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-05 16:51:30,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-05 16:51:30,476 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:51:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:51:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash -622246157, now seen corresponding path program 1 times [2021-11-05 16:51:30,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:51:30,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457117351] [2021-11-05 16:51:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:51:30,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:51:31,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:51:31,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64976935] [2021-11-05 16:51:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:51:31,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:51:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:51:31,233 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:51:31,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-05 16:51:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:51:40,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 55128 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-05 16:51:40,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:51:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 429419 backedges. 7 proven. 17081 refuted. 0 times theorem prover too weak. 412331 trivial. 0 not checked. [2021-11-05 16:51:48,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:51:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 429419 backedges. 7 proven. 17081 refuted. 0 times theorem prover too weak. 412331 trivial. 0 not checked. [2021-11-05 16:51:58,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:51:58,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457117351] [2021-11-05 16:51:58,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:51:58,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64976935] [2021-11-05 16:51:58,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64976935] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:51:58,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:51:58,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 128 [2021-11-05 16:51:58,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931880167] [2021-11-05 16:51:58,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 16:51:58,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-05 16:51:58,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:51:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-05 16:51:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-11-05 16:51:58,058 INFO L87 Difference]: Start difference. First operand 17327 states and 19770 transitions. Second operand has 128 states, 128 states have (on average 14.5859375) internal successors, (1867), 128 states have internal predecessors, (1867), 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) [2021-11-05 16:52:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:52:20,242 INFO L93 Difference]: Finished difference Result 43649 states and 50843 transitions. [2021-11-05 16:52:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-05 16:52:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 14.5859375) internal successors, (1867), 128 states have internal predecessors, (1867), 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 5792 [2021-11-05 16:52:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:52:20,282 INFO L225 Difference]: With dead ends: 43649 [2021-11-05 16:52:20,282 INFO L226 Difference]: Without dead ends: 26350 [2021-11-05 16:52:20,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11582 GetRequests, 11456 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5361.84ms TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-11-05 16:52:20,307 INFO L933 BasicCegarLoop]: 5453 mSDtfsCounter, 42895 mSDsluCounter, 51749 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2734.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42897 SdHoareTripleChecker+Valid, 57202 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.13ms SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3031.98ms IncrementalHoareTripleChecker+Time [2021-11-05 16:52:20,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42897 Valid, 57202 Invalid, 1375 Unknown, 0 Unchecked, 64.13ms Time], IncrementalHoareTripleChecker [606 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 3031.98ms Time] [2021-11-05 16:52:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26350 states. [2021-11-05 16:52:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26350 to 19055. [2021-11-05 16:52:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19055 states, 19034 states have (on average 1.138278869391615) internal successors, (21666), 19036 states have internal predecessors, (21666), 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) [2021-11-05 16:52:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19055 states to 19055 states and 21690 transitions. [2021-11-05 16:52:22,459 INFO L78 Accepts]: Start accepts. Automaton has 19055 states and 21690 transitions. Word has length 5792 [2021-11-05 16:52:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:52:22,462 INFO L470 AbstractCegarLoop]: Abstraction has 19055 states and 21690 transitions. [2021-11-05 16:52:22,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 14.5859375) internal successors, (1867), 128 states have internal predecessors, (1867), 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) [2021-11-05 16:52:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 19055 states and 21690 transitions. [2021-11-05 16:52:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6657 [2021-11-05 16:52:22,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:52:22,674 INFO L514 BasicCegarLoop]: trace histogram [240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 126, 126, 126, 126, 126, 126, 126, 126, 126, 63, 63, 63, 63, 63, 63, 63, 63, 63, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:52:22,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-05 16:52:22,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:52:22,874 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:52:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:52:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1886262003, now seen corresponding path program 2 times [2021-11-05 16:52:22,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:52:22,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464488315] [2021-11-05 16:52:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:52:22,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:52:23,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:52:23,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100537739] [2021-11-05 16:52:23,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:52:23,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:52:23,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:52:23,538 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:52:23,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-05 16:52:35,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:52:35,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:52:36,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 63384 conjuncts, 128 conjunts are in the unsatisfiable core [2021-11-05 16:52:36,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:52:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 496763 backedges. 7 proven. 71001 refuted. 0 times theorem prover too weak. 425755 trivial. 0 not checked. [2021-11-05 16:52:49,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:53:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 496763 backedges. 7 proven. 71001 refuted. 0 times theorem prover too weak. 425755 trivial. 0 not checked. [2021-11-05 16:53:12,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:53:12,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464488315] [2021-11-05 16:53:12,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:53:12,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100537739] [2021-11-05 16:53:12,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100537739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:53:12,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:53:12,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 256 [2021-11-05 16:53:12,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918142864] [2021-11-05 16:53:12,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 16:53:12,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2021-11-05 16:53:12,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:53:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2021-11-05 16:53:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32640, Invalid=32640, Unknown=0, NotChecked=0, Total=65280 [2021-11-05 16:53:12,712 INFO L87 Difference]: Start difference. First operand 19055 states and 21690 transitions. Second operand has 256 states, 256 states have (on average 11.79296875) internal successors, (3019), 256 states have internal predecessors, (3019), 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) [2021-11-05 16:55:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:55:12,403 INFO L93 Difference]: Finished difference Result 48833 states and 56795 transitions. [2021-11-05 16:55:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2021-11-05 16:55:12,404 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 256 states have (on average 11.79296875) internal successors, (3019), 256 states have internal predecessors, (3019), 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 6656 [2021-11-05 16:55:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:55:12,448 INFO L225 Difference]: With dead ends: 48833 [2021-11-05 16:55:12,448 INFO L226 Difference]: Without dead ends: 29806 [2021-11-05 16:55:12,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13310 GetRequests, 13056 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20821.89ms TimeCoverageRelationStatistics Valid=32640, Invalid=32640, Unknown=0, NotChecked=0, Total=65280 [2021-11-05 16:55:12,475 INFO L933 BasicCegarLoop]: 5453 mSDtfsCounter, 63652 mSDsluCounter, 36041 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 1407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2465.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63654 SdHoareTripleChecker+Valid, 41494 SdHoareTripleChecker+Invalid, 2734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.69ms SdHoareTripleChecker+Time, 1407 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3086.95ms IncrementalHoareTripleChecker+Time [2021-11-05 16:55:12,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63654 Valid, 41494 Invalid, 2734 Unknown, 0 Unchecked, 92.69ms Time], IncrementalHoareTripleChecker [1407 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 3086.95ms Time] [2021-11-05 16:55:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29806 states. [2021-11-05 16:55:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29806 to 22511. [2021-11-05 16:55:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22511 states, 22490 states have (on average 1.1341040462427745) internal successors, (25506), 22492 states have internal predecessors, (25506), 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) [2021-11-05 16:55:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22511 states to 22511 states and 25530 transitions. [2021-11-05 16:55:14,975 INFO L78 Accepts]: Start accepts. Automaton has 22511 states and 25530 transitions. Word has length 6656 [2021-11-05 16:55:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:55:14,978 INFO L470 AbstractCegarLoop]: Abstraction has 22511 states and 25530 transitions. [2021-11-05 16:55:14,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 256 states have (on average 11.79296875) internal successors, (3019), 256 states have internal predecessors, (3019), 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) [2021-11-05 16:55:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 22511 states and 25530 transitions. [2021-11-05 16:55:15,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8385 [2021-11-05 16:55:15,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:55:15,435 INFO L514 BasicCegarLoop]: trace histogram [254, 254, 254, 254, 254, 254, 254, 254, 254, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 127, 127, 127, 127, 127, 127, 127, 127, 127, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:55:15,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-05 16:55:15,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-05 16:55:15,640 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:55:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:55:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1498917619, now seen corresponding path program 3 times [2021-11-05 16:55:15,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:55:15,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869767307] [2021-11-05 16:55:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:55:15,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:55:16,227 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:55:16,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037398127] [2021-11-05 16:55:16,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 16:55:16,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:55:16,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:55:16,229 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:55:16,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-05 16:55:20,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-05 16:55:20,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:55:20,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 7358 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 16:55:20,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:55:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 769691 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 769684 trivial. 0 not checked. [2021-11-05 16:55:31,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:55:31,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:55:31,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869767307] [2021-11-05 16:55:31,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:55:31,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037398127] [2021-11-05 16:55:31,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037398127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:55:31,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:55:31,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:55:31,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884530870] [2021-11-05 16:55:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:55:31,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:55:31,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:55:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:55:31,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:55:31,224 INFO L87 Difference]: Start difference. First operand 22511 states and 25530 transitions. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 2 states have internal predecessors, (758), 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) [2021-11-05 16:55:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:55:33,764 INFO L93 Difference]: Finished difference Result 44964 states and 50997 transitions. [2021-11-05 16:55:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:55:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 2 states have internal predecessors, (758), 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 8384 [2021-11-05 16:55:33,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:55:33,788 INFO L225 Difference]: With dead ends: 44964 [2021-11-05 16:55:33,788 INFO L226 Difference]: Without dead ends: 22481 [2021-11-05 16:55:33,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8383 GetRequests, 8382 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:55:33,807 INFO L933 BasicCegarLoop]: 4153 mSDtfsCounter, 4063 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4063 SdHoareTripleChecker+Valid, 4153 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.59ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.38ms IncrementalHoareTripleChecker+Time [2021-11-05 16:55:33,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4063 Valid, 4153 Invalid, 3 Unknown, 0 Unchecked, 5.59ms Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 4.38ms Time] [2021-11-05 16:55:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22481 states. [2021-11-05 16:55:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22481 to 22481. [2021-11-05 16:55:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22481 states, 22460 states have (on average 1.1341050756901159) internal successors, (25472), 22462 states have internal predecessors, (25472), 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) [2021-11-05 16:55:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22481 states to 22481 states and 25496 transitions. [2021-11-05 16:55:36,462 INFO L78 Accepts]: Start accepts. Automaton has 22481 states and 25496 transitions. Word has length 8384 [2021-11-05 16:55:36,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:55:36,465 INFO L470 AbstractCegarLoop]: Abstraction has 22481 states and 25496 transitions. [2021-11-05 16:55:36,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 2 states have internal predecessors, (758), 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) [2021-11-05 16:55:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 22481 states and 25496 transitions. [2021-11-05 16:55:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8385 [2021-11-05 16:55:36,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:55:36,876 INFO L514 BasicCegarLoop]: trace histogram [254, 254, 254, 254, 254, 254, 254, 254, 254, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 240, 127, 127, 127, 127, 127, 127, 127, 127, 127, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:55:36,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-05 16:55:37,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:55:37,077 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:55:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:55:37,078 INFO L85 PathProgramCache]: Analyzing trace with hash -683785423, now seen corresponding path program 1 times [2021-11-05 16:55:37,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:55:37,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765504989] [2021-11-05 16:55:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:55:37,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:55:37,686 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 16:55:37,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166341760] [2021-11-05 16:55:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:55:37,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:55:37,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:55:37,688 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:55:37,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-05 16:55:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:55:52,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 79894 conjuncts, 256 conjunts are in the unsatisfiable core [2021-11-05 16:55:52,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:56:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 769691 backedges. 7 proven. 289433 refuted. 0 times theorem prover too weak. 480251 trivial. 0 not checked. [2021-11-05 16:56:24,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:57:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 769691 backedges. 7 proven. 289433 refuted. 0 times theorem prover too weak. 480251 trivial. 0 not checked. [2021-11-05 16:57:37,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:57:37,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765504989] [2021-11-05 16:57:37,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 16:57:37,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166341760] [2021-11-05 16:57:37,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166341760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:57:37,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:57:37,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 257] total 512 [2021-11-05 16:57:37,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238945939] [2021-11-05 16:57:37,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 16:57:37,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2021-11-05 16:57:37,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:57:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2021-11-05 16:57:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130816, Invalid=130816, Unknown=0, NotChecked=0, Total=261632 [2021-11-05 16:57:37,648 INFO L87 Difference]: Start difference. First operand 22481 states and 25496 transitions. Second operand has 512 states, 512 states have (on average 10.396484375) internal successors, (5323), 512 states have internal predecessors, (5323), 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