./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 4d014703 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-4d01470 [2021-11-02 18:50:03,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:50:03,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:50:03,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:50:03,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:50:03,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:50:03,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:50:03,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:50:03,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:50:03,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:50:03,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:50:03,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:50:03,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:50:03,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:50:03,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:50:03,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:50:03,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:50:03,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:50:03,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:50:03,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:50:03,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:50:03,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:50:03,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:50:03,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:50:03,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:50:03,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:50:03,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:50:03,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:50:03,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:50:03,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:50:03,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:50:03,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:50:03,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:50:03,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:50:03,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:50:03,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:50:03,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:50:03,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:50:03,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:50:03,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:50:03,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:50:03,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:50:03,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:50:03,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:50:03,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:50:03,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:50:03,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:50:03,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:50:03,603 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:50:03,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:50:03,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:50:03,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:50:03,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:50:03,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:50:03,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:50:03,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:50:03,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:50:03,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:50:03,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:50:03,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:50:03,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:50:03,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:50:03,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:50:03,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:50:03,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:50:03,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:50:03,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:50:03,606 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:50:03,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:50:03,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:50:03,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:50:03,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7001fc39e766418166b5245dd523731096962c63b3f1d8b8399a7fc1e7a88c5f [2021-11-02 18:50:03,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:50:03,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:50:03,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:50:03,805 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:50:03,806 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:50:03,807 INFO L432 ainManager$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 [2021-11-02 18:50:03,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6caae7ce8/bd578c4ab92d4aa3b22e439b3f18d803/FLAG5e498f87a [2021-11-02 18:50:04,511 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:50:04,512 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 [2021-11-02 18:50:04,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6caae7ce8/bd578c4ab92d4aa3b22e439b3f18d803/FLAG5e498f87a [2021-11-02 18:50:04,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6caae7ce8/bd578c4ab92d4aa3b22e439b3f18d803 [2021-11-02 18:50:04,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:50:04,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:50:04,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:50:04,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:50:04,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:50:04,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:50:04" (1/1) ... [2021-11-02 18:50:04,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67805af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:04, skipping insertion in model container [2021-11-02 18:50:04,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:50:04" (1/1) ... [2021-11-02 18:50:04,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:50:04,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:50:05,201 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-02 18:50:05,201 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] [2021-11-02 18:50:05,529 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] [2021-11-02 18:50:06,394 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 18:50:06,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:50:06,438 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:50:06,566 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6037] [2021-11-02 18:50:06,567 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] [2021-11-02 18:50:06,577 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] [2021-11-02 18:50:06,836 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 18:50:06,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:50:06,905 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:50:06,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06 WrapperNode [2021-11-02 18:50:06,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:50:06,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:50:06,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:50:06,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:50:06,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:50:07,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:50:07,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:50:07,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:50:07,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:07,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:50:07,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:50:07,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:50:07,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:50:07,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (1/1) ... [2021-11-02 18:50:08,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:50:08,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:50:08,047 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) [2021-11-02 18:50:08,076 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 [2021-11-02 18:50:08,098 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-02 18:50:08,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:50:08,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:50:08,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:50:08,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:50:08,099 INFO L130 BoogieDeclarations]: Found specification of procedure he_ioctl [2021-11-02 18:50:08,099 INFO L138 BoogieDeclarations]: Found implementation of procedure he_ioctl [2021-11-02 18:50:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:50:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:50:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:50:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-02 18:50:08,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-02 18:50:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:50:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 18:50:08,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:50:08,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:50:08,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:50:10,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:50:10,556 INFO L299 CfgBuilder]: Removed 3920 assume(true) statements. [2021-11-02 18:50:10,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:50:10 BoogieIcfgContainer [2021-11-02 18:50:10,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:50:10,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:50:10,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:50:10,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:50:10,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:50:04" (1/3) ... [2021-11-02 18:50:10,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e722ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:50:10, skipping insertion in model container [2021-11-02 18:50:10,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:50:06" (2/3) ... [2021-11-02 18:50:10,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e722ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:50:10, skipping insertion in model container [2021-11-02 18:50:10,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:50:10" (3/3) ... [2021-11-02 18:50:10,567 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 [2021-11-02 18:50:10,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:50:10,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-02 18:50:10,612 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:50:10,617 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 [2021-11-02 18:50:10,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-02 18:50:10,658 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) [2021-11-02 18:50:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 18:50:10,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:50:10,667 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] [2021-11-02 18:50:10,667 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)] === [2021-11-02 18:50:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:50:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1581002451, now seen corresponding path program 1 times [2021-11-02 18:50:10,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:50:10,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264714859] [2021-11-02 18:50:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:50:10,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:50:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:50:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:50:11,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:50:11,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264714859] [2021-11-02 18:50:11,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264714859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:50:11,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:50:11,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:50:11,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427502474] [2021-11-02 18:50:11,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:50:11,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:50:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:50:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:11,090 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) [2021-11-02 18:50:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:50:19,662 INFO L93 Difference]: Finished difference Result 9019 states and 11589 transitions. [2021-11-02 18:50:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:50:19,666 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 [2021-11-02 18:50:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:50:19,697 INFO L225 Difference]: With dead ends: 9019 [2021-11-02 18:50:19,697 INFO L226 Difference]: Without dead ends: 5642 [2021-11-02 18:50:19,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:19,712 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 3018 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 8399 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6676.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 8405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.61ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8140.94ms IncrementalHoareTripleChecker+Time [2021-11-02 18:50:19,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3018 Valid, 72 Invalid, 8405 Unknown, 0 Unchecked, 26.61ms Time], IncrementalHoareTripleChecker [6 Valid, 8399 Invalid, 0 Unknown, 0 Unchecked, 8140.94ms Time] [2021-11-02 18:50:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-11-02 18:50:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5199. [2021-11-02 18:50:19,859 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) [2021-11-02 18:50:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6589 transitions. [2021-11-02 18:50:19,873 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6589 transitions. Word has length 30 [2021-11-02 18:50:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:50:19,873 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 6589 transitions. [2021-11-02 18:50:19,874 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) [2021-11-02 18:50:19,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6589 transitions. [2021-11-02 18:50:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 18:50:19,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:50:19,875 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] [2021-11-02 18:50:19,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 18:50:19,876 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)] === [2021-11-02 18:50:19,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:50:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash 887517176, now seen corresponding path program 1 times [2021-11-02 18:50:19,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:50:19,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258815027] [2021-11-02 18:50:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:50:19,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:50:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:50:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:50:19,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:50:19,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258815027] [2021-11-02 18:50:19,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258815027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:50:19,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:50:19,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:50:19,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747818837] [2021-11-02 18:50:19,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:50:19,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:50:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:50:19,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:19,973 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) [2021-11-02 18:50:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:50:27,409 INFO L93 Difference]: Finished difference Result 11503 states and 14673 transitions. [2021-11-02 18:50:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:50:27,410 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 [2021-11-02 18:50:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:50:27,432 INFO L225 Difference]: With dead ends: 11503 [2021-11-02 18:50:27,432 INFO L226 Difference]: Without dead ends: 6332 [2021-11-02 18:50:27,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:27,442 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1390 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 9532 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5999.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7179.42ms IncrementalHoareTripleChecker+Time [2021-11-02 18:50:27,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 24 Invalid, 9534 Unknown, 0 Unchecked, 17.51ms Time], IncrementalHoareTripleChecker [2 Valid, 9532 Invalid, 0 Unknown, 0 Unchecked, 7179.42ms Time] [2021-11-02 18:50:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2021-11-02 18:50:27,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 6324. [2021-11-02 18:50:27,565 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) [2021-11-02 18:50:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8111 transitions. [2021-11-02 18:50:27,586 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8111 transitions. Word has length 32 [2021-11-02 18:50:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:50:27,587 INFO L470 AbstractCegarLoop]: Abstraction has 6324 states and 8111 transitions. [2021-11-02 18:50:27,588 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) [2021-11-02 18:50:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8111 transitions. [2021-11-02 18:50:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 18:50:27,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:50:27,592 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] [2021-11-02 18:50:27,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 18:50:27,596 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)] === [2021-11-02 18:50:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:50:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1301149159, now seen corresponding path program 1 times [2021-11-02 18:50:27,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:50:27,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855236531] [2021-11-02 18:50:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:50:27,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:50:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:50:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:50:27,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:50:27,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855236531] [2021-11-02 18:50:27,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855236531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:50:27,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:50:27,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:50:27,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275545] [2021-11-02 18:50:27,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:50:27,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:50:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:50:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:27,723 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) [2021-11-02 18:50:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:50:34,421 INFO L93 Difference]: Finished difference Result 13765 states and 17737 transitions. [2021-11-02 18:50:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:50:34,421 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 [2021-11-02 18:50:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:50:34,443 INFO L225 Difference]: With dead ends: 13765 [2021-11-02 18:50:34,443 INFO L226 Difference]: Without dead ends: 7469 [2021-11-02 18:50:34,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:34,456 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 3604 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 7480 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5355.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 7484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.70ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6485.91ms IncrementalHoareTripleChecker+Time [2021-11-02 18:50:34,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3604 Valid, 24 Invalid, 7484 Unknown, 0 Unchecked, 9.70ms Time], IncrementalHoareTripleChecker [4 Valid, 7480 Invalid, 0 Unknown, 0 Unchecked, 6485.91ms Time] [2021-11-02 18:50:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2021-11-02 18:50:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 7461. [2021-11-02 18:50:34,577 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) [2021-11-02 18:50:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 9649 transitions. [2021-11-02 18:50:34,588 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 9649 transitions. Word has length 45 [2021-11-02 18:50:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:50:34,588 INFO L470 AbstractCegarLoop]: Abstraction has 7461 states and 9649 transitions. [2021-11-02 18:50:34,588 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) [2021-11-02 18:50:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 9649 transitions. [2021-11-02 18:50:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 18:50:34,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:50:34,591 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] [2021-11-02 18:50:34,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 18:50:34,592 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)] === [2021-11-02 18:50:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:50:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash -806942872, now seen corresponding path program 1 times [2021-11-02 18:50:34,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:50:34,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89996874] [2021-11-02 18:50:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:50:34,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:50:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:50:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:50:34,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:50:34,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89996874] [2021-11-02 18:50:34,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89996874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:50:34,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:50:34,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 18:50:34,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240601148] [2021-11-02 18:50:34,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:50:34,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:50:34,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:50:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:34,694 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) [2021-11-02 18:50:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:50:40,015 INFO L93 Difference]: Finished difference Result 7461 states and 9649 transitions. [2021-11-02 18:50:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:50:40,016 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 [2021-11-02 18:50:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:50:40,039 INFO L225 Difference]: With dead ends: 7461 [2021-11-02 18:50:40,040 INFO L226 Difference]: Without dead ends: 7443 [2021-11-02 18:50:40,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:40,044 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2588 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 5665 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4214.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2588 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.07ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5095.85ms IncrementalHoareTripleChecker+Time [2021-11-02 18:50:40,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2588 Valid, 8 Invalid, 5717 Unknown, 0 Unchecked, 8.07ms Time], IncrementalHoareTripleChecker [52 Valid, 5665 Invalid, 0 Unknown, 0 Unchecked, 5095.85ms Time] [2021-11-02 18:50:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2021-11-02 18:50:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 7443. [2021-11-02 18:50:40,205 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) [2021-11-02 18:50:40,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 9622 transitions. [2021-11-02 18:50:40,218 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 9622 transitions. Word has length 49 [2021-11-02 18:50:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:50:40,219 INFO L470 AbstractCegarLoop]: Abstraction has 7443 states and 9622 transitions. [2021-11-02 18:50:40,220 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) [2021-11-02 18:50:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 9622 transitions. [2021-11-02 18:50:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 18:50:40,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:50:40,223 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] [2021-11-02 18:50:40,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 18:50:40,224 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)] === [2021-11-02 18:50:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:50:40,225 INFO L85 PathProgramCache]: Analyzing trace with hash -90544357, now seen corresponding path program 1 times [2021-11-02 18:50:40,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:50:40,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075324547] [2021-11-02 18:50:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:50:40,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:50:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:50:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 18:50:40,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:50:40,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075324547] [2021-11-02 18:50:40,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075324547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:50:40,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:50:40,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:50:40,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994182697] [2021-11-02 18:50:40,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:50:40,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:50:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:50:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:40,360 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) [2021-11-02 18:50:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:50:48,013 INFO L93 Difference]: Finished difference Result 14864 states and 19223 transitions. [2021-11-02 18:50:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:50:48,013 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 [2021-11-02 18:50:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:50:48,029 INFO L225 Difference]: With dead ends: 14864 [2021-11-02 18:50:48,029 INFO L226 Difference]: Without dead ends: 7449 [2021-11-02 18:50:48,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:50:48,042 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 8332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6124.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7375.29ms IncrementalHoareTripleChecker+Time [2021-11-02 18:50:48,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 8334 Unknown, 0 Unchecked, 18.06ms Time], IncrementalHoareTripleChecker [2 Valid, 8332 Invalid, 0 Unknown, 0 Unchecked, 7375.29ms Time] [2021-11-02 18:50:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2021-11-02 18:50:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 7449. [2021-11-02 18:50:48,155 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) [2021-11-02 18:50:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7449 states to 7449 states and 9628 transitions. [2021-11-02 18:50:48,165 INFO L78 Accepts]: Start accepts. Automaton has 7449 states and 9628 transitions. Word has length 74 [2021-11-02 18:50:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:50:48,166 INFO L470 AbstractCegarLoop]: Abstraction has 7449 states and 9628 transitions. [2021-11-02 18:50:48,166 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) [2021-11-02 18:50:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7449 states and 9628 transitions. [2021-11-02 18:50:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 18:50:48,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:50:48,172 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] [2021-11-02 18:50:48,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 18:50:48,173 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)] === [2021-11-02 18:50:48,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:50:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash 382366977, now seen corresponding path program 1 times [2021-11-02 18:50:48,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:50:48,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220553983] [2021-11-02 18:50:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:50:48,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:50:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:50:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:50:48,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:50:48,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220553983] [2021-11-02 18:50:48,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220553983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:50:48,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:50:48,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:50:48,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656137650] [2021-11-02 18:50:48,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:50:48,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:50:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:50:48,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:50:48,347 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) [2021-11-02 18:51:09,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:51:09,139 INFO L93 Difference]: Finished difference Result 19618 states and 25238 transitions. [2021-11-02 18:51:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:51:09,140 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 [2021-11-02 18:51:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:51:09,168 INFO L225 Difference]: With dead ends: 19618 [2021-11-02 18:51:09,168 INFO L226 Difference]: Without dead ends: 12197 [2021-11-02 18:51:09,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.56ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:51:09,185 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6166 mSDsluCounter, 16964 mSDsCounter, 0 mSdLazyCounter, 23541 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16903.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6166 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 23548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.14ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20116.30ms IncrementalHoareTripleChecker+Time [2021-11-02 18:51:09,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6166 Valid, 38 Invalid, 23548 Unknown, 0 Unchecked, 56.14ms Time], IncrementalHoareTripleChecker [7 Valid, 23541 Invalid, 0 Unknown, 0 Unchecked, 20116.30ms Time] [2021-11-02 18:51:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12197 states. [2021-11-02 18:51:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12197 to 7462. [2021-11-02 18:51:09,427 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) [2021-11-02 18:51:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 9643 transitions. [2021-11-02 18:51:09,439 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 9643 transitions. Word has length 76 [2021-11-02 18:51:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:51:09,440 INFO L470 AbstractCegarLoop]: Abstraction has 7462 states and 9643 transitions. [2021-11-02 18:51:09,440 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) [2021-11-02 18:51:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 9643 transitions. [2021-11-02 18:51:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 18:51:09,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:51:09,443 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] [2021-11-02 18:51:09,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 18:51:09,444 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)] === [2021-11-02 18:51:09,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:51:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash 805068803, now seen corresponding path program 1 times [2021-11-02 18:51:09,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:51:09,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24315088] [2021-11-02 18:51:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:51:09,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:51:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:51:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:51:09,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:51:09,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24315088] [2021-11-02 18:51:09,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24315088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:51:09,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:51:09,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:51:09,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631660206] [2021-11-02 18:51:09,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:51:09,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:51:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:51:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:51:09,625 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) [2021-11-02 18:51:12,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:51:37,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:51:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:51:43,358 INFO L93 Difference]: Finished difference Result 36139 states and 46688 transitions. [2021-11-02 18:51:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:51:43,358 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 [2021-11-02 18:51:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:51:43,427 INFO L225 Difference]: With dead ends: 36139 [2021-11-02 18:51:43,427 INFO L226 Difference]: Without dead ends: 28705 [2021-11-02 18:51:43,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.98ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:51:43,454 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 22148 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 23366 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27238.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22150 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 23403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.69ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 23366 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32330.47ms IncrementalHoareTripleChecker+Time [2021-11-02 18:51:43,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22150 Valid, 60 Invalid, 23403 Unknown, 0 Unchecked, 89.69ms Time], IncrementalHoareTripleChecker [35 Valid, 23366 Invalid, 2 Unknown, 0 Unchecked, 32330.47ms Time] [2021-11-02 18:51:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28705 states. [2021-11-02 18:51:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28705 to 7468. [2021-11-02 18:51:43,888 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) [2021-11-02 18:51:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 9649 transitions. [2021-11-02 18:51:43,899 INFO L78 Accepts]: Start accepts. Automaton has 7468 states and 9649 transitions. Word has length 76 [2021-11-02 18:51:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:51:43,901 INFO L470 AbstractCegarLoop]: Abstraction has 7468 states and 9649 transitions. [2021-11-02 18:51:43,901 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) [2021-11-02 18:51:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7468 states and 9649 transitions. [2021-11-02 18:51:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 18:51:43,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:51:43,906 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] [2021-11-02 18:51:43,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 18:51:43,907 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)] === [2021-11-02 18:51:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:51:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -653223961, now seen corresponding path program 1 times [2021-11-02 18:51:43,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:51:43,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156239424] [2021-11-02 18:51:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:51:43,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:51:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:51:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:51:44,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:51:44,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156239424] [2021-11-02 18:51:44,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156239424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:51:44,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:51:44,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:51:44,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666114027] [2021-11-02 18:51:44,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:51:44,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:51:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:51:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:51:44,147 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) [2021-11-02 18:51:45,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:51:48,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:51:49,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:52:05,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-02 18:52:58,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:52:58,743 INFO L93 Difference]: Finished difference Result 27641 states and 36170 transitions. [2021-11-02 18:52:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:52:58,744 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 [2021-11-02 18:52:58,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:52:58,773 INFO L225 Difference]: With dead ends: 27641 [2021-11-02 18:52:58,773 INFO L226 Difference]: Without dead ends: 20201 [2021-11-02 18:52:58,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.73ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:52:58,789 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 16801 mSDsluCounter, 14700 mSDsCounter, 0 mSdLazyCounter, 22485 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55837.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16803 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 22500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.28ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22485 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72641.53ms IncrementalHoareTripleChecker+Time [2021-11-02 18:52:58,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16803 Valid, 44 Invalid, 22500 Unknown, 0 Unchecked, 122.28ms Time], IncrementalHoareTripleChecker [13 Valid, 22485 Invalid, 2 Unknown, 0 Unchecked, 72641.53ms Time] [2021-11-02 18:52:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20201 states. [2021-11-02 18:52:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20201 to 7050. [2021-11-02 18:52:59,155 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) [2021-11-02 18:52:59,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 9122 transitions. [2021-11-02 18:52:59,164 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 9122 transitions. Word has length 78 [2021-11-02 18:52:59,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:52:59,164 INFO L470 AbstractCegarLoop]: Abstraction has 7050 states and 9122 transitions. [2021-11-02 18:52:59,165 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) [2021-11-02 18:52:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 9122 transitions. [2021-11-02 18:52:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 18:52:59,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:52:59,168 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] [2021-11-02 18:52:59,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 18:52:59,169 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)] === [2021-11-02 18:52:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:52:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -741958678, now seen corresponding path program 1 times [2021-11-02 18:52:59,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:52:59,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124405743] [2021-11-02 18:52:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:52:59,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:52:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:52:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:52:59,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:52:59,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124405743] [2021-11-02 18:52:59,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124405743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:52:59,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:52:59,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:52:59,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438969427] [2021-11-02 18:52:59,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:52:59,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:52:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:52:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:52:59,274 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) [2021-11-02 18:53:02,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:53:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:53:19,815 INFO L93 Difference]: Finished difference Result 15500 states and 20050 transitions. [2021-11-02 18:53:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:53:19,816 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 [2021-11-02 18:53:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:53:19,830 INFO L225 Difference]: With dead ends: 15500 [2021-11-02 18:53:19,830 INFO L226 Difference]: Without dead ends: 8478 [2021-11-02 18:53:19,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:53:19,842 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2194 mSDsluCounter, 9093 mSDsCounter, 0 mSdLazyCounter, 14023 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16282.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.75ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14023 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19714.52ms IncrementalHoareTripleChecker+Time [2021-11-02 18:53:19,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 24 Invalid, 14031 Unknown, 0 Unchecked, 30.75ms Time], IncrementalHoareTripleChecker [7 Valid, 14023 Invalid, 1 Unknown, 0 Unchecked, 19714.52ms Time] [2021-11-02 18:53:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-11-02 18:53:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 7052. [2021-11-02 18:53:20,211 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) [2021-11-02 18:53:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 9124 transitions. [2021-11-02 18:53:20,220 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 9124 transitions. Word has length 89 [2021-11-02 18:53:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:53:20,220 INFO L470 AbstractCegarLoop]: Abstraction has 7052 states and 9124 transitions. [2021-11-02 18:53:20,221 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) [2021-11-02 18:53:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 9124 transitions. [2021-11-02 18:53:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 18:53:20,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:53:20,226 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] [2021-11-02 18:53:20,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 18:53:20,226 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)] === [2021-11-02 18:53:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:53:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2074368120, now seen corresponding path program 1 times [2021-11-02 18:53:20,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:53:20,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008835348] [2021-11-02 18:53:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:53:20,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:53:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:53:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:53:20,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:53:20,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008835348] [2021-11-02 18:53:20,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008835348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:53:20,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:53:20,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:53:20,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209349744] [2021-11-02 18:53:20,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:53:20,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:53:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:53:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:53:20,342 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) [2021-11-02 18:53:22,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:53:35,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:53:35,070 INFO L93 Difference]: Finished difference Result 14216 states and 18381 transitions. [2021-11-02 18:53:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:53:35,071 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 [2021-11-02 18:53:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:53:35,083 INFO L225 Difference]: With dead ends: 14216 [2021-11-02 18:53:35,083 INFO L226 Difference]: Without dead ends: 7192 [2021-11-02 18:53:35,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:53:35,095 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 8328 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11587.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.76ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8328 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14104.95ms IncrementalHoareTripleChecker+Time [2021-11-02 18:53:35,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 16 Invalid, 8337 Unknown, 0 Unchecked, 16.76ms Time], IncrementalHoareTripleChecker [8 Valid, 8328 Invalid, 1 Unknown, 0 Unchecked, 14104.95ms Time] [2021-11-02 18:53:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2021-11-02 18:53:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 7062. [2021-11-02 18:53:35,457 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) [2021-11-02 18:53:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 9134 transitions. [2021-11-02 18:53:35,467 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 9134 transitions. Word has length 166 [2021-11-02 18:53:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:53:35,467 INFO L470 AbstractCegarLoop]: Abstraction has 7062 states and 9134 transitions. [2021-11-02 18:53:35,468 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) [2021-11-02 18:53:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 9134 transitions. [2021-11-02 18:53:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-02 18:53:35,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:53:35,473 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] [2021-11-02 18:53:35,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 18:53:35,473 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)] === [2021-11-02 18:53:35,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:53:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash 359465740, now seen corresponding path program 1 times [2021-11-02 18:53:35,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:53:35,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140152375] [2021-11-02 18:53:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:53:35,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:53:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:53:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:53:35,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:53:35,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140152375] [2021-11-02 18:53:35,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140152375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:53:35,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:53:35,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:53:35,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920114393] [2021-11-02 18:53:35,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:53:35,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:53:35,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:53:35,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:53:35,598 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) [2021-11-02 18:53:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:53:49,244 INFO L93 Difference]: Finished difference Result 14174 states and 18325 transitions. [2021-11-02 18:53:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:53:49,245 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 [2021-11-02 18:53:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:53:49,256 INFO L225 Difference]: With dead ends: 14174 [2021-11-02 18:53:49,257 INFO L226 Difference]: Without dead ends: 7140 [2021-11-02 18:53:49,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:53:49,268 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 8328 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10384.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.25ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 8328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13006.42ms IncrementalHoareTripleChecker+Time [2021-11-02 18:53:49,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 16 Invalid, 8338 Unknown, 0 Unchecked, 17.25ms Time], IncrementalHoareTripleChecker [10 Valid, 8328 Invalid, 0 Unknown, 0 Unchecked, 13006.42ms Time] [2021-11-02 18:53:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-11-02 18:53:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 7074. [2021-11-02 18:53:49,629 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) [2021-11-02 18:53:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7074 states to 7074 states and 9146 transitions. [2021-11-02 18:53:49,639 INFO L78 Accepts]: Start accepts. Automaton has 7074 states and 9146 transitions. Word has length 188 [2021-11-02 18:53:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:53:49,640 INFO L470 AbstractCegarLoop]: Abstraction has 7074 states and 9146 transitions. [2021-11-02 18:53:49,640 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) [2021-11-02 18:53:49,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7074 states and 9146 transitions. [2021-11-02 18:53:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 18:53:49,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:53:49,645 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] [2021-11-02 18:53:49,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 18:53:49,646 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)] === [2021-11-02 18:53:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:53:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash 476710264, now seen corresponding path program 1 times [2021-11-02 18:53:49,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:53:49,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839526784] [2021-11-02 18:53:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:53:49,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:53:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:53:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 18:53:49,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:53:49,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839526784] [2021-11-02 18:53:49,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839526784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:53:49,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254655103] [2021-11-02 18:53:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:53:49,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:53:49,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:53:49,803 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) [2021-11-02 18:53:49,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 18:53:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:53:50,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:53:50,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:53:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 18:53:51,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:53:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 18:53:51,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254655103] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:53:51,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:53:51,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-02 18:53:51,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684458509] [2021-11-02 18:53:51,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 18:53:51,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:53:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 18:53:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:53:51,488 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) [2021-11-02 18:54:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:54:08,226 INFO L93 Difference]: Finished difference Result 14378 states and 18559 transitions. [2021-11-02 18:54:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:54:08,227 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 [2021-11-02 18:54:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:54:08,236 INFO L225 Difference]: With dead ends: 14378 [2021-11-02 18:54:08,236 INFO L226 Difference]: Without dead ends: 7332 [2021-11-02 18:54:08,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.38ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:54:08,243 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 244 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 12585 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13043.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 12654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.09ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 12585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16028.17ms IncrementalHoareTripleChecker+Time [2021-11-02 18:54:08,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 24 Invalid, 12654 Unknown, 0 Unchecked, 23.09ms Time], IncrementalHoareTripleChecker [69 Valid, 12585 Invalid, 0 Unknown, 0 Unchecked, 16028.17ms Time] [2021-11-02 18:54:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2021-11-02 18:54:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 7308. [2021-11-02 18:54:08,543 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) [2021-11-02 18:54:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 9380 transitions. [2021-11-02 18:54:08,550 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 9380 transitions. Word has length 227 [2021-11-02 18:54:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:54:08,551 INFO L470 AbstractCegarLoop]: Abstraction has 7308 states and 9380 transitions. [2021-11-02 18:54:08,551 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) [2021-11-02 18:54:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 9380 transitions. [2021-11-02 18:54:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-02 18:54:08,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:54:08,556 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] [2021-11-02 18:54:08,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 18:54:08,771 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 [2021-11-02 18:54:08,772 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)] === [2021-11-02 18:54:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:54:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1755828948, now seen corresponding path program 2 times [2021-11-02 18:54:08,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:54:08,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447921948] [2021-11-02 18:54:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:54:08,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:54:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:54:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-11-02 18:54:08,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:54:08,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447921948] [2021-11-02 18:54:08,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447921948] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:54:08,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630466645] [2021-11-02 18:54:08,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 18:54:08,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:54:08,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:54:08,980 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) [2021-11-02 18:54:08,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 18:54:10,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 18:54:10,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:54:10,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 4319 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 18:54:10,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:54:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-02 18:54:11,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:54:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-02 18:54:11,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630466645] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:54:11,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:54:11,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2021-11-02 18:54:11,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902623204] [2021-11-02 18:54:11,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 18:54:11,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:54:11,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 18:54:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-02 18:54:11,977 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) [2021-11-02 18:54:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:54:43,320 INFO L93 Difference]: Finished difference Result 16306 states and 20697 transitions. [2021-11-02 18:54:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 18:54:43,321 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 [2021-11-02 18:54:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:54:43,334 INFO L225 Difference]: With dead ends: 16306 [2021-11-02 18:54:43,334 INFO L226 Difference]: Without dead ends: 9026 [2021-11-02 18:54:43,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 170.51ms TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-02 18:54:43,344 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1540 mSDsluCounter, 24900 mSDsCounter, 0 mSdLazyCounter, 29669 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25080.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 30017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.85ms SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 29669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30256.20ms IncrementalHoareTripleChecker+Time [2021-11-02 18:54:43,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 56 Invalid, 30017 Unknown, 0 Unchecked, 51.85ms Time], IncrementalHoareTripleChecker [348 Valid, 29669 Invalid, 0 Unknown, 0 Unchecked, 30256.20ms Time] [2021-11-02 18:54:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2021-11-02 18:54:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 8132. [2021-11-02 18:54:43,747 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) [2021-11-02 18:54:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10220 transitions. [2021-11-02 18:54:43,757 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10220 transitions. Word has length 344 [2021-11-02 18:54:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:54:43,758 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 10220 transitions. [2021-11-02 18:54:43,758 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) [2021-11-02 18:54:43,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10220 transitions. [2021-11-02 18:54:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2021-11-02 18:54:43,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:54:43,771 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] [2021-11-02 18:54:43,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 18:54:43,982 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 [2021-11-02 18:54:43,983 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)] === [2021-11-02 18:54:43,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:54:43,983 INFO L85 PathProgramCache]: Analyzing trace with hash 494058296, now seen corresponding path program 3 times [2021-11-02 18:54:43,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:54:43,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078729430] [2021-11-02 18:54:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:54:43,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:54:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:54:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2780 trivial. 0 not checked. [2021-11-02 18:54:44,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:54:44,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078729430] [2021-11-02 18:54:44,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078729430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:54:44,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095626727] [2021-11-02 18:54:44,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 18:54:44,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:54:44,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:54:44,715 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) [2021-11-02 18:54:44,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 18:54:46,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-02 18:54:46,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:54:46,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 18:54:46,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:54:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3664 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3657 trivial. 0 not checked. [2021-11-02 18:54:48,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:54:48,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095626727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:54:48,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 18:54:48,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-02 18:54:48,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665592706] [2021-11-02 18:54:48,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:54:48,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:54:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:54:48,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:54:48,029 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) [2021-11-02 18:55:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:55:30,740 INFO L93 Difference]: Finished difference Result 17664 states and 22246 transitions. [2021-11-02 18:55:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:55:30,741 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 [2021-11-02 18:55:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:55:30,757 INFO L225 Difference]: With dead ends: 17664 [2021-11-02 18:55:30,758 INFO L226 Difference]: Without dead ends: 9560 [2021-11-02 18:55:30,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 224.76ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:55:30,775 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2194 mSDsluCounter, 9093 mSDsCounter, 0 mSdLazyCounter, 14018 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31567.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41315.54ms IncrementalHoareTripleChecker+Time [2021-11-02 18:55:30,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 24 Invalid, 14031 Unknown, 0 Unchecked, 54.71ms Time], IncrementalHoareTripleChecker [13 Valid, 14018 Invalid, 0 Unknown, 0 Unchecked, 41315.54ms Time] [2021-11-02 18:55:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2021-11-02 18:55:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 8132. [2021-11-02 18:55:31,299 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) [2021-11-02 18:55:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10220 transitions. [2021-11-02 18:55:31,311 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10220 transitions. Word has length 730 [2021-11-02 18:55:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:55:31,312 INFO L470 AbstractCegarLoop]: Abstraction has 8132 states and 10220 transitions. [2021-11-02 18:55:31,312 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) [2021-11-02 18:55:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10220 transitions. [2021-11-02 18:55:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2021-11-02 18:55:31,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:55:31,337 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] [2021-11-02 18:55:31,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 18:55:31,551 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 [2021-11-02 18:55:31,552 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)] === [2021-11-02 18:55:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:55:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash 115068768, now seen corresponding path program 1 times [2021-11-02 18:55:31,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:55:31,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469669250] [2021-11-02 18:55:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:55:31,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:55:31,702 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:55:31,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309380200] [2021-11-02 18:55:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:55:31,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:55:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:55:31,704 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) [2021-11-02 18:55:31,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 18:55:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:55:33,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 12012 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 18:55:33,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:55:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3690 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3683 trivial. 0 not checked. [2021-11-02 18:55:35,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:55:35,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:55:35,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469669250] [2021-11-02 18:55:35,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:55:35,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309380200] [2021-11-02 18:55:35,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309380200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:55:35,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:55:35,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:55:35,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809696896] [2021-11-02 18:55:35,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:55:35,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:55:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:55:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:55:35,020 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) [2021-11-02 18:55:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:55:52,491 INFO L93 Difference]: Finished difference Result 16290 states and 20473 transitions. [2021-11-02 18:55:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:55:52,491 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 [2021-11-02 18:55:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:55:52,504 INFO L225 Difference]: With dead ends: 16290 [2021-11-02 18:55:52,504 INFO L226 Difference]: Without dead ends: 8186 [2021-11-02 18:55:52,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:55:52,516 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 8331 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12781.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.75ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16610.12ms IncrementalHoareTripleChecker+Time [2021-11-02 18:55:52,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 16 Invalid, 8335 Unknown, 0 Unchecked, 20.75ms Time], IncrementalHoareTripleChecker [4 Valid, 8331 Invalid, 0 Unknown, 0 Unchecked, 16610.12ms Time] [2021-11-02 18:55:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8186 states. [2021-11-02 18:55:53,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8186 to 8138. [2021-11-02 18:55:53,007 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) [2021-11-02 18:55:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8138 states to 8138 states and 10226 transitions. [2021-11-02 18:55:53,016 INFO L78 Accepts]: Start accepts. Automaton has 8138 states and 10226 transitions. Word has length 1112 [2021-11-02 18:55:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:55:53,017 INFO L470 AbstractCegarLoop]: Abstraction has 8138 states and 10226 transitions. [2021-11-02 18:55:53,017 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) [2021-11-02 18:55:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 8138 states and 10226 transitions. [2021-11-02 18:55:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2021-11-02 18:55:53,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:55:53,031 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] [2021-11-02 18:55:53,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 18:55:53,231 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 [2021-11-02 18:55:53,232 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)] === [2021-11-02 18:55:53,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:55:53,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1116309504, now seen corresponding path program 1 times [2021-11-02 18:55:53,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:55:53,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872970849] [2021-11-02 18:55:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:55:53,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:55:53,371 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:55:53,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557175912] [2021-11-02 18:55:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:55:53,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:55:53,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:55:53,373 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) [2021-11-02 18:55:53,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 18:55:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:55:55,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 12274 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 18:55:55,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:55:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3693 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3686 trivial. 0 not checked. [2021-11-02 18:55:56,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:55:56,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:55:56,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872970849] [2021-11-02 18:55:56,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:55:56,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557175912] [2021-11-02 18:55:56,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557175912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:55:56,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:55:56,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:55:56,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966095122] [2021-11-02 18:55:56,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:55:56,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:55:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:55:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:55:56,628 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) [2021-11-02 18:56:13,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:56:13,896 INFO L93 Difference]: Finished difference Result 16284 states and 20457 transitions. [2021-11-02 18:56:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:56:13,896 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 [2021-11-02 18:56:13,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:56:13,909 INFO L225 Difference]: With dead ends: 16284 [2021-11-02 18:56:13,909 INFO L226 Difference]: Without dead ends: 8174 [2021-11-02 18:56:13,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1138 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:56:13,921 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 8333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12606.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16390.42ms IncrementalHoareTripleChecker+Time [2021-11-02 18:56:13,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 8333 Unknown, 0 Unchecked, 20.12ms Time], IncrementalHoareTripleChecker [0 Valid, 8333 Invalid, 0 Unknown, 0 Unchecked, 16390.42ms Time] [2021-11-02 18:56:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2021-11-02 18:56:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 8140. [2021-11-02 18:56:14,427 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) [2021-11-02 18:56:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10228 transitions. [2021-11-02 18:56:14,439 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10228 transitions. Word has length 1139 [2021-11-02 18:56:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:56:14,440 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10228 transitions. [2021-11-02 18:56:14,440 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) [2021-11-02 18:56:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10228 transitions. [2021-11-02 18:56:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-02 18:56:14,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:56:14,456 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] [2021-11-02 18:56:14,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 18:56:14,671 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 [2021-11-02 18:56:14,672 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)] === [2021-11-02 18:56:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:56:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1022085076, now seen corresponding path program 1 times [2021-11-02 18:56:14,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:56:14,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477650562] [2021-11-02 18:56:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:14,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:56:14,831 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:56:14,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329507562] [2021-11-02 18:56:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:14,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:56:14,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:56:14,833 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) [2021-11-02 18:56:14,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 18:56:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:56:16,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 12533 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:56:16,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:56:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-02 18:56:18,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:56:18,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:56:18,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477650562] [2021-11-02 18:56:18,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:56:18,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329507562] [2021-11-02 18:56:18,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329507562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:56:18,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:56:18,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 18:56:18,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885139179] [2021-11-02 18:56:18,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:56:18,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:56:18,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:56:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:56:18,873 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) [2021-11-02 18:56:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:56:32,102 INFO L93 Difference]: Finished difference Result 16252 states and 20423 transitions. [2021-11-02 18:56:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:56:32,102 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 [2021-11-02 18:56:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:56:32,115 INFO L225 Difference]: With dead ends: 16252 [2021-11-02 18:56:32,116 INFO L226 Difference]: Without dead ends: 8140 [2021-11-02 18:56:32,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:56:32,130 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3970 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9479.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3970 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12376.09ms IncrementalHoareTripleChecker+Time [2021-11-02 18:56:32,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3970 Valid, 8 Invalid, 4166 Unknown, 0 Unchecked, 11.88ms Time], IncrementalHoareTripleChecker [1 Valid, 4165 Invalid, 0 Unknown, 0 Unchecked, 12376.09ms Time] [2021-11-02 18:56:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2021-11-02 18:56:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 8140. [2021-11-02 18:56:32,593 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) [2021-11-02 18:56:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10224 transitions. [2021-11-02 18:56:32,602 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10224 transitions. Word has length 1157 [2021-11-02 18:56:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:56:32,603 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10224 transitions. [2021-11-02 18:56:32,603 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) [2021-11-02 18:56:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10224 transitions. [2021-11-02 18:56:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-02 18:56:32,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:56:32,619 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] [2021-11-02 18:56:32,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-02 18:56:32,826 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 [2021-11-02 18:56:32,826 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)] === [2021-11-02 18:56:32,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:56:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1474582486, now seen corresponding path program 1 times [2021-11-02 18:56:32,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:56:32,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705719453] [2021-11-02 18:56:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:32,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:56:32,988 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:56:32,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49512594] [2021-11-02 18:56:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:32,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:56:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:56:32,989 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) [2021-11-02 18:56:32,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 18:56:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:56:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 12529 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:56:34,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:56:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-02 18:56:37,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:56:37,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:56:37,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705719453] [2021-11-02 18:56:37,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:56:37,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49512594] [2021-11-02 18:56:37,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49512594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:56:37,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:56:37,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 18:56:37,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049354202] [2021-11-02 18:56:37,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:56:37,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:56:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:56:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:56:37,305 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) [2021-11-02 18:56:49,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:56:49,487 INFO L93 Difference]: Finished difference Result 16252 states and 20415 transitions. [2021-11-02 18:56:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:56:49,487 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 [2021-11-02 18:56:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:56:49,497 INFO L225 Difference]: With dead ends: 16252 [2021-11-02 18:56:49,497 INFO L226 Difference]: Without dead ends: 8140 [2021-11-02 18:56:49,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:56:49,507 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3968 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8878.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11380.06ms IncrementalHoareTripleChecker+Time [2021-11-02 18:56:49,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3968 Valid, 8 Invalid, 4164 Unknown, 0 Unchecked, 9.52ms Time], IncrementalHoareTripleChecker [0 Valid, 4164 Invalid, 0 Unknown, 0 Unchecked, 11380.06ms Time] [2021-11-02 18:56:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8140 states. [2021-11-02 18:56:49,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8140 to 8140. [2021-11-02 18:56:49,952 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) [2021-11-02 18:56:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 10222 transitions. [2021-11-02 18:56:49,960 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 10222 transitions. Word has length 1157 [2021-11-02 18:56:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:56:49,960 INFO L470 AbstractCegarLoop]: Abstraction has 8140 states and 10222 transitions. [2021-11-02 18:56:49,960 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) [2021-11-02 18:56:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 10222 transitions. [2021-11-02 18:56:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2021-11-02 18:56:49,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:56:49,973 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] [2021-11-02 18:56:50,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-02 18:56:50,175 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 [2021-11-02 18:56:50,176 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)] === [2021-11-02 18:56:50,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:56:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash 796442516, now seen corresponding path program 1 times [2021-11-02 18:56:50,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:56:50,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109809754] [2021-11-02 18:56:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:50,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:56:50,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:56:50,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188169943] [2021-11-02 18:56:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:50,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:56:50,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:56:50,308 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) [2021-11-02 18:56:50,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 18:56:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:56:52,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 12525 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 18:56:52,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:56:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-02 18:56:53,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:56:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3694 backedges. 7 proven. 877 refuted. 0 times theorem prover too weak. 2810 trivial. 0 not checked. [2021-11-02 18:56:55,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:56:55,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109809754] [2021-11-02 18:56:55,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:56:55,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188169943] [2021-11-02 18:56:55,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188169943] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:56:55,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 18:56:55,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-02 18:56:55,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481097732] [2021-11-02 18:56:55,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 18:56:55,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:56:55,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 18:56:55,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:56:55,750 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) [2021-11-02 18:56:58,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:57:00,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:57:02,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:57:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:36,393 INFO L93 Difference]: Finished difference Result 23543 states and 29607 transitions. [2021-11-02 18:57:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 18:57:36,393 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 [2021-11-02 18:57:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:36,415 INFO L225 Difference]: With dead ends: 23543 [2021-11-02 18:57:36,415 INFO L226 Difference]: Without dead ends: 15431 [2021-11-02 18:57:36,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2312 GetRequests, 2306 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.48ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:57:36,429 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 5712 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 21961 mSolverCounterSat, 59 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31500.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5716 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 22022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.05ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 21961 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38868.54ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:36,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5716 Valid, 28 Invalid, 22022 Unknown, 0 Unchecked, 53.05ms Time], IncrementalHoareTripleChecker [59 Valid, 21961 Invalid, 2 Unknown, 0 Unchecked, 38868.54ms Time] [2021-11-02 18:57:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15431 states. [2021-11-02 18:57:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15431 to 9468. [2021-11-02 18:57:37,138 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) [2021-11-02 18:57:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9468 states to 9468 states and 11596 transitions. [2021-11-02 18:57:37,149 INFO L78 Accepts]: Start accepts. Automaton has 9468 states and 11596 transitions. Word has length 1157 [2021-11-02 18:57:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:37,149 INFO L470 AbstractCegarLoop]: Abstraction has 9468 states and 11596 transitions. [2021-11-02 18:57:37,149 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) [2021-11-02 18:57:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9468 states and 11596 transitions. [2021-11-02 18:57:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1807 [2021-11-02 18:57:37,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:37,174 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] [2021-11-02 18:57:37,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 18:57:37,383 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 [2021-11-02 18:57:37,384 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)] === [2021-11-02 18:57:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash -253202446, now seen corresponding path program 2 times [2021-11-02 18:57:37,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:37,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091102218] [2021-11-02 18:57:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:37,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:37,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:57:37,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430911990] [2021-11-02 18:57:37,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 18:57:37,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:57:37,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:57:37,594 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) [2021-11-02 18:57:37,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 18:57:43,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 18:57:43,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:57:43,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 18464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 18:57:43,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:57:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-02 18:57:46,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:57:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19864 backedges. 7 proven. 13131 refuted. 0 times theorem prover too weak. 6726 trivial. 0 not checked. [2021-11-02 18:57:48,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:48,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091102218] [2021-11-02 18:57:48,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:57:49,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430911990] [2021-11-02 18:57:49,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430911990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:57:49,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 18:57:49,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-02 18:57:49,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942246159] [2021-11-02 18:57:49,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 18:57:49,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 18:57:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-02 18:57:49,002 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) [2021-11-02 18:58:46,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:58:46,397 INFO L93 Difference]: Finished difference Result 28587 states and 35109 transitions. [2021-11-02 18:58:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 18:58:46,397 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 [2021-11-02 18:58:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:58:46,421 INFO L225 Difference]: With dead ends: 28587 [2021-11-02 18:58:46,421 INFO L226 Difference]: Without dead ends: 19147 [2021-11-02 18:58:46,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3610 GetRequests, 3596 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.80ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-02 18:58:46,433 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 12356 mSDsluCounter, 23564 mSDsCounter, 0 mSdLazyCounter, 29187 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40645.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12360 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 29310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.41ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 29187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54489.88ms IncrementalHoareTripleChecker+Time [2021-11-02 18:58:46,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12360 Valid, 40 Invalid, 29310 Unknown, 0 Unchecked, 108.41ms Time], IncrementalHoareTripleChecker [123 Valid, 29187 Invalid, 0 Unknown, 0 Unchecked, 54489.88ms Time] [2021-11-02 18:58:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2021-11-02 18:58:47,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 12368. [2021-11-02 18:58:47,435 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) [2021-11-02 18:58:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12368 states to 12368 states and 14594 transitions. [2021-11-02 18:58:47,448 INFO L78 Accepts]: Start accepts. Automaton has 12368 states and 14594 transitions. Word has length 1806 [2021-11-02 18:58:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:58:47,449 INFO L470 AbstractCegarLoop]: Abstraction has 12368 states and 14594 transitions. [2021-11-02 18:58:47,449 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) [2021-11-02 18:58:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 12368 states and 14594 transitions. [2021-11-02 18:58:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3224 [2021-11-02 18:58:47,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:58:47,507 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] [2021-11-02 18:58:47,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 18:58:47,707 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 [2021-11-02 18:58:47,707 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)] === [2021-11-02 18:58:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:58:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2091651000, now seen corresponding path program 3 times [2021-11-02 18:58:47,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:58:47,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423426157] [2021-11-02 18:58:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:47,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:58:48,041 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:58:48,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532752865] [2021-11-02 18:58:48,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 18:58:48,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:58:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:58:48,043 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) [2021-11-02 18:58:48,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 18:58:50,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-02 18:58:50,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:58:51,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 6426 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:58:51,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:58:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-02 18:58:54,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:58:54,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:58:54,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423426157] [2021-11-02 18:58:54,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:58:54,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532752865] [2021-11-02 18:58:54,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532752865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:58:54,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:58:54,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:58:54,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815635478] [2021-11-02 18:58:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:58:54,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:58:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:58:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:58:54,660 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) [2021-11-02 18:59:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:59:37,449 INFO L93 Difference]: Finished difference Result 33976 states and 39577 transitions. [2021-11-02 18:59:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:59:37,449 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 [2021-11-02 18:59:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:59:37,481 INFO L225 Difference]: With dead ends: 33976 [2021-11-02 18:59:37,481 INFO L226 Difference]: Without dead ends: 21636 [2021-11-02 18:59:37,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3224 GetRequests, 3221 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:59:37,497 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4728 mSDsluCounter, 10464 mSDsCounter, 0 mSdLazyCounter, 16750 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29493.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 16750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40033.58ms IncrementalHoareTripleChecker+Time [2021-11-02 18:59:37,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 24 Invalid, 16750 Unknown, 0 Unchecked, 56.23ms Time], IncrementalHoareTripleChecker [0 Valid, 16750 Invalid, 0 Unknown, 0 Unchecked, 40033.58ms Time] [2021-11-02 18:59:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21636 states. [2021-11-02 18:59:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21636 to 12370. [2021-11-02 18:59:38,572 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) [2021-11-02 18:59:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12370 states to 12370 states and 14596 transitions. [2021-11-02 18:59:38,589 INFO L78 Accepts]: Start accepts. Automaton has 12370 states and 14596 transitions. Word has length 3223 [2021-11-02 18:59:38,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:59:38,591 INFO L470 AbstractCegarLoop]: Abstraction has 12370 states and 14596 transitions. [2021-11-02 18:59:38,591 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) [2021-11-02 18:59:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 12370 states and 14596 transitions. [2021-11-02 18:59:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3230 [2021-11-02 18:59:38,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:59:38,650 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] [2021-11-02 18:59:38,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 18:59:38,850 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 [2021-11-02 18:59:38,851 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)] === [2021-11-02 18:59:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:59:38,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1584409371, now seen corresponding path program 1 times [2021-11-02 18:59:38,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:59:38,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926026733] [2021-11-02 18:59:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:59:38,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:59:39,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:59:39,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510538625] [2021-11-02 18:59:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:59:39,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:59:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:59:39,241 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) [2021-11-02 18:59:39,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 18:59:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:59:44,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 31432 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 18:59:44,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:59:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 102479 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102472 trivial. 0 not checked. [2021-11-02 18:59:47,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:59:47,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:59:47,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926026733] [2021-11-02 18:59:47,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:59:47,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510538625] [2021-11-02 18:59:47,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510538625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:59:47,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:59:47,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:59:47,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571467488] [2021-11-02 18:59:47,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:59:47,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:59:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:59:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:59:47,597 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) [2021-11-02 19:00:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:00:06,808 INFO L93 Difference]: Finished difference Result 24730 states and 29181 transitions. [2021-11-02 19:00:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:00:06,810 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 [2021-11-02 19:00:06,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:00:06,825 INFO L225 Difference]: With dead ends: 24730 [2021-11-02 19:00:06,825 INFO L226 Difference]: Without dead ends: 12388 [2021-11-02 19:00:06,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3228 GetRequests, 3227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:00:06,841 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 8327 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13706.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17761.91ms IncrementalHoareTripleChecker+Time [2021-11-02 19:00:06,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 16 Invalid, 8327 Unknown, 0 Unchecked, 17.03ms Time], IncrementalHoareTripleChecker [0 Valid, 8327 Invalid, 0 Unknown, 0 Unchecked, 17761.91ms Time] [2021-11-02 19:00:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12388 states. [2021-11-02 19:00:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12388 to 12372. [2021-11-02 19:00:07,856 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) [2021-11-02 19:00:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 14598 transitions. [2021-11-02 19:00:07,870 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 14598 transitions. Word has length 3229 [2021-11-02 19:00:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:00:07,872 INFO L470 AbstractCegarLoop]: Abstraction has 12372 states and 14598 transitions. [2021-11-02 19:00:07,872 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) [2021-11-02 19:00:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 14598 transitions. [2021-11-02 19:00:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3239 [2021-11-02 19:00:07,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:00:07,931 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] [2021-11-02 19:00:08,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 19:00:08,132 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 [2021-11-02 19:00:08,132 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)] === [2021-11-02 19:00:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:00:08,133 INFO L85 PathProgramCache]: Analyzing trace with hash -622776611, now seen corresponding path program 1 times [2021-11-02 19:00:08,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:00:08,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659130585] [2021-11-02 19:00:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:00:08,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:00:08,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 19:00:08,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647033168] [2021-11-02 19:00:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:00:08,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:00:08,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:00:08,487 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) [2021-11-02 19:00:08,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 19:00:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:00:14,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 31518 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 19:00:14,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:00:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 102480 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102473 trivial. 0 not checked. [2021-11-02 19:00:18,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 19:00:18,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:00:18,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659130585] [2021-11-02 19:00:18,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 19:00:18,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647033168] [2021-11-02 19:00:18,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647033168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:00:18,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:00:18,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:00:18,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300020975] [2021-11-02 19:00:18,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:00:18,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:00:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:00:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:00:18,004 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) [2021-11-02 19:00:47,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:00:47,909 INFO L93 Difference]: Finished difference Result 24734 states and 29185 transitions. [2021-11-02 19:00:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:00:47,910 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 [2021-11-02 19:00:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:00:47,930 INFO L225 Difference]: With dead ends: 24734 [2021-11-02 19:00:47,930 INFO L226 Difference]: Without dead ends: 12390 [2021-11-02 19:00:47,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3237 GetRequests, 3236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:00:47,948 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 4153 mSDsCounter, 0 mSdLazyCounter, 8317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20021.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27999.17ms IncrementalHoareTripleChecker+Time [2021-11-02 19:00:47,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 8319 Unknown, 0 Unchecked, 28.37ms Time], IncrementalHoareTripleChecker [2 Valid, 8317 Invalid, 0 Unknown, 0 Unchecked, 27999.17ms Time] [2021-11-02 19:00:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12390 states. [2021-11-02 19:00:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12390 to 12374. [2021-11-02 19:00:49,008 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) [2021-11-02 19:00:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 14600 transitions. [2021-11-02 19:00:49,029 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 14600 transitions. Word has length 3238 [2021-11-02 19:00:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:00:49,031 INFO L470 AbstractCegarLoop]: Abstraction has 12374 states and 14600 transitions. [2021-11-02 19:00:49,031 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) [2021-11-02 19:00:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 14600 transitions. [2021-11-02 19:00:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3248 [2021-11-02 19:00:49,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:00:49,095 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] [2021-11-02 19:00:49,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 19:00:49,295 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 [2021-11-02 19:00:49,296 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)] === [2021-11-02 19:00:49,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:00:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash -229997354, now seen corresponding path program 1 times [2021-11-02 19:00:49,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:00:49,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106432758] [2021-11-02 19:00:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:00:49,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:00:49,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 19:00:49,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927610579] [2021-11-02 19:00:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:00:49,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:00:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:00:49,731 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) [2021-11-02 19:00:49,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 19:00:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:00:55,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 31604 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 19:00:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:00:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 102481 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102474 trivial. 0 not checked. [2021-11-02 19:00:59,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 19:00:59,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:00:59,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106432758] [2021-11-02 19:00:59,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 19:00:59,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927610579] [2021-11-02 19:00:59,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927610579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:00:59,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:00:59,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:00:59,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419765971] [2021-11-02 19:00:59,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:00:59,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:00:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:00:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:00:59,458 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) [2021-11-02 19:01:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:01:28,488 INFO L93 Difference]: Finished difference Result 24730 states and 29183 transitions. [2021-11-02 19:01:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:01:28,489 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 [2021-11-02 19:01:28,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:01:28,508 INFO L225 Difference]: With dead ends: 24730 [2021-11-02 19:01:28,509 INFO L226 Difference]: Without dead ends: 12384 [2021-11-02 19:01:28,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3246 GetRequests, 3245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:01:28,530 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 8326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19743.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.38ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27256.69ms IncrementalHoareTripleChecker+Time [2021-11-02 19:01:28,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 8328 Unknown, 0 Unchecked, 26.38ms Time], IncrementalHoareTripleChecker [2 Valid, 8326 Invalid, 0 Unknown, 0 Unchecked, 27256.69ms Time] [2021-11-02 19:01:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2021-11-02 19:01:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 12378. [2021-11-02 19:01:29,668 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) [2021-11-02 19:01:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12378 states to 12378 states and 14604 transitions. [2021-11-02 19:01:29,686 INFO L78 Accepts]: Start accepts. Automaton has 12378 states and 14604 transitions. Word has length 3247 [2021-11-02 19:01:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:01:29,688 INFO L470 AbstractCegarLoop]: Abstraction has 12378 states and 14604 transitions. [2021-11-02 19:01:29,688 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) [2021-11-02 19:01:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 12378 states and 14604 transitions. [2021-11-02 19:01:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3250 [2021-11-02 19:01:29,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:01:29,750 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] [2021-11-02 19:01:29,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 19:01:29,963 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 [2021-11-02 19:01:29,963 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)] === [2021-11-02 19:01:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:01:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash 264553778, now seen corresponding path program 1 times [2021-11-02 19:01:29,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:01:29,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195549144] [2021-11-02 19:01:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:01:29,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:01:30,354 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 19:01:30,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862959034] [2021-11-02 19:01:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:01:30,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:01:30,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:01:30,372 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) [2021-11-02 19:01:30,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 19:01:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:01:36,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 31612 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 19:01:36,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:01:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 102482 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102475 trivial. 0 not checked. [2021-11-02 19:01:39,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 19:01:39,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:01:39,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195549144] [2021-11-02 19:01:39,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 19:01:39,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862959034] [2021-11-02 19:01:39,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862959034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:01:39,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:01:39,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:01:39,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458138369] [2021-11-02 19:01:39,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:01:39,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:01:39,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:01:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:01:39,860 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) [2021-11-02 19:02:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:02:35,213 INFO L93 Difference]: Finished difference Result 36797 states and 43381 transitions. [2021-11-02 19:02:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:02:35,213 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 [2021-11-02 19:02:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:02:35,248 INFO L225 Difference]: With dead ends: 36797 [2021-11-02 19:02:35,249 INFO L226 Difference]: Without dead ends: 24447 [2021-11-02 19:02:35,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3248 GetRequests, 3247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:02:35,270 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3997 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 12300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36590.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3999 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51598.94ms IncrementalHoareTripleChecker+Time [2021-11-02 19:02:35,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3999 Valid, 22 Invalid, 12302 Unknown, 0 Unchecked, 46.25ms Time], IncrementalHoareTripleChecker [2 Valid, 12300 Invalid, 0 Unknown, 0 Unchecked, 51598.94ms Time] [2021-11-02 19:02:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24447 states. [2021-11-02 19:02:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24447 to 12390. [2021-11-02 19:02:36,472 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) [2021-11-02 19:02:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 14618 transitions. [2021-11-02 19:02:36,486 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 14618 transitions. Word has length 3249 [2021-11-02 19:02:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:02:36,488 INFO L470 AbstractCegarLoop]: Abstraction has 12390 states and 14618 transitions. [2021-11-02 19:02:36,488 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) [2021-11-02 19:02:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 14618 transitions. [2021-11-02 19:02:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3256 [2021-11-02 19:02:36,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:02:36,548 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] [2021-11-02 19:02:36,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-02 19:02:36,763 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 [2021-11-02 19:02:36,764 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)] === [2021-11-02 19:02:36,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:02:36,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1399361692, now seen corresponding path program 1 times [2021-11-02 19:02:36,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:02:36,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222138375] [2021-11-02 19:02:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:02:36,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:02:37,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 19:02:37,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761153766] [2021-11-02 19:02:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:02:37,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:02:37,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:02:37,095 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) [2021-11-02 19:02:37,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 19:02:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:02:42,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 31625 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 19:02:42,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:02:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 102484 backedges. 7 proven. 79639 refuted. 0 times theorem prover too weak. 22838 trivial. 0 not checked. [2021-11-02 19:02:47,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 19:02:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 102484 backedges. 7 proven. 79639 refuted. 0 times theorem prover too weak. 22838 trivial. 0 not checked. [2021-11-02 19:02:55,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:02:55,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222138375] [2021-11-02 19:02:55,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 19:02:55,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761153766] [2021-11-02 19:02:55,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761153766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 19:02:55,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 19:02:55,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-02 19:02:55,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457787158] [2021-11-02 19:02:55,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 19:02:55,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:02:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 19:02:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-02 19:02:55,342 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) Killed by 15