./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.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 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:36:28,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:36:28,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:36:28,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:36:28,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:36:28,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:36:28,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:36:28,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:36:28,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:36:28,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:36:28,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:36:28,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:36:28,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:36:28,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:36:28,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:36:28,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:36:28,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:36:28,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:36:28,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:36:28,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:36:28,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:36:28,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:36:28,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:36:28,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:36:28,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:36:28,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:36:28,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:36:28,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:36:28,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:36:28,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:36:28,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:36:28,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:36:28,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:36:28,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:36:28,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:36:28,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:36:28,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:36:28,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:36:28,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:36:28,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:36:28,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:36:28,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:36:28,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:36:28,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:36:28,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:36:28,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:36:28,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:36:28,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:36:28,168 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:36:28,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:36:28,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:36:28,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:36:28,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:36:28,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:36:28,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:36:28,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:36:28,170 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:36:28,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:36:28,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:36:28,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:36:28,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:36:28,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:36:28,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:36:28,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:36:28,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:36:28,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:36:28,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:36:28,172 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:36:28,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:36:28,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:36:28,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:36:28,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c [2021-11-07 12:36:28,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:36:28,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:36:28,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:36:28,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:36:28,442 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:36:28,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-07 12:36:28,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264653f2d/f5aff440b248470a9cf56d2407d96e97/FLAGf9b885c0a [2021-11-07 12:36:29,216 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:36:29,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-07 12:36:29,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264653f2d/f5aff440b248470a9cf56d2407d96e97/FLAGf9b885c0a [2021-11-07 12:36:29,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264653f2d/f5aff440b248470a9cf56d2407d96e97 [2021-11-07 12:36:29,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:36:29,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:36:29,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:36:29,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:36:29,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:36:29,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:29" (1/1) ... [2021-11-07 12:36:29,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51023af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:29, skipping insertion in model container [2021-11-07 12:36:29,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:29" (1/1) ... [2021-11-07 12:36:29,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:36:29,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:36:30,052 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-07 12:36:30,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:36:30,618 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:36:30,732 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-07 12:36:30,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:36:30,989 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:36:30,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30 WrapperNode [2021-11-07 12:36:30,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:36:30,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:36:30,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:36:30,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:36:30,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:31,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:31,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:36:31,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:36:31,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:36:31,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:36:31,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:31,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:31,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:31,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:32,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:32,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:32,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:32,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:36:32,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:36:32,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:36:32,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:36:32,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (1/1) ... [2021-11-07 12:36:32,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:36:32,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:36:32,717 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) [2021-11-07 12:36:32,767 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 [2021-11-07 12:36:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:36:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:36:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 12:36:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:36:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-07 12:36:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-07 12:36:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:36:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:36:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:36:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:36:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:36:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:36:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_irq [2021-11-07 12:36:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_irq [2021-11-07 12:36:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:36:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:36:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:36:51,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:36:51,664 INFO L299 CfgBuilder]: Removed 2529 assume(true) statements. [2021-11-07 12:36:51,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:51 BoogieIcfgContainer [2021-11-07 12:36:51,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:36:51,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:36:51,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:36:51,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:36:51,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:29" (1/3) ... [2021-11-07 12:36:51,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abecadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:51, skipping insertion in model container [2021-11-07 12:36:51,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30" (2/3) ... [2021-11-07 12:36:51,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abecadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:51, skipping insertion in model container [2021-11-07 12:36:51,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:51" (3/3) ... [2021-11-07 12:36:51,677 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-07 12:36:51,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:36:51,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 12:36:51,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:36:51,742 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 [2021-11-07 12:36:51,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 12:36:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 2894 states, 2873 states have (on average 1.4246432300730942) internal successors, (4093), 2879 states have internal predecessors, (4093), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 12:36:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 12:36:51,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:36:51,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:36:51,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:36:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:36:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1256768685, now seen corresponding path program 1 times [2021-11-07 12:36:51,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:36:51,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513005510] [2021-11-07 12:36:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:36:51,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:36:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:36:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:36:52,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:36:52,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513005510] [2021-11-07 12:36:52,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513005510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:36:52,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:36:52,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:36:52,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277473023] [2021-11-07 12:36:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:36:52,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:36:52,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:36:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:36:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:52,561 INFO L87 Difference]: Start difference. First operand has 2894 states, 2873 states have (on average 1.4246432300730942) internal successors, (4093), 2879 states have internal predecessors, (4093), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:54,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:36:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:36:55,140 INFO L93 Difference]: Finished difference Result 8456 states and 12037 transitions. [2021-11-07 12:36:55,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:36:55,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-07 12:36:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:36:55,186 INFO L225 Difference]: With dead ends: 8456 [2021-11-07 12:36:55,186 INFO L226 Difference]: Without dead ends: 5533 [2021-11-07 12:36:55,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:55,203 INFO L933 BasicCegarLoop]: 4069 mSDtfsCounter, 3796 mSDsluCounter, 4039 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2086.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3796 SdHoareTripleChecker+Valid, 8108 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.19ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2283.40ms IncrementalHoareTripleChecker+Time [2021-11-07 12:36:55,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3796 Valid, 8108 Invalid, 15 Unknown, 0 Unchecked, 43.19ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2283.40ms Time] [2021-11-07 12:36:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-11-07 12:36:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5533. [2021-11-07 12:36:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 5498 states have (on average 1.4099672608221172) internal successors, (7752), 5504 states have internal predecessors, (7752), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 12:36:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 7796 transitions. [2021-11-07 12:36:55,446 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 7796 transitions. Word has length 71 [2021-11-07 12:36:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:36:55,448 INFO L470 AbstractCegarLoop]: Abstraction has 5533 states and 7796 transitions. [2021-11-07 12:36:55,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 7796 transitions. [2021-11-07 12:36:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 12:36:55,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:36:55,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:36:55,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:36:55,459 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:36:55,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:36:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash 317054977, now seen corresponding path program 1 times [2021-11-07 12:36:55,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:36:55,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880426628] [2021-11-07 12:36:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:36:55,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:36:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:36:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:36:55,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:36:55,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880426628] [2021-11-07 12:36:55,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880426628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:36:55,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:36:55,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:36:55,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497617640] [2021-11-07 12:36:55,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:36:55,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:36:55,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:36:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:36:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:55,924 INFO L87 Difference]: Start difference. First operand 5533 states and 7796 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:36:56,432 INFO L93 Difference]: Finished difference Result 16347 states and 23153 transitions. [2021-11-07 12:36:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:36:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 [2021-11-07 12:36:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:36:56,519 INFO L225 Difference]: With dead ends: 16347 [2021-11-07 12:36:56,520 INFO L226 Difference]: Without dead ends: 10939 [2021-11-07 12:36:56,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:56,532 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 3949 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3949 SdHoareTripleChecker+Valid, 8584 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.31ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.08ms IncrementalHoareTripleChecker+Time [2021-11-07 12:36:56,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3949 Valid, 8584 Invalid, 57 Unknown, 0 Unchecked, 20.31ms Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 88.08ms Time] [2021-11-07 12:36:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-11-07 12:36:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10927. [2021-11-07 12:36:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10927 states, 10862 states have (on average 1.4106978457006076) internal successors, (15323), 10870 states have internal predecessors, (15323), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-07 12:36:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10927 states to 10927 states and 15433 transitions. [2021-11-07 12:36:56,846 INFO L78 Accepts]: Start accepts. Automaton has 10927 states and 15433 transitions. Word has length 78 [2021-11-07 12:36:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:36:56,848 INFO L470 AbstractCegarLoop]: Abstraction has 10927 states and 15433 transitions. [2021-11-07 12:36:56,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10927 states and 15433 transitions. [2021-11-07 12:36:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 12:36:56,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:36:56,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:36:56,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:36:56,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:36:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:36:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1238777568, now seen corresponding path program 1 times [2021-11-07 12:36:56,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:36:56,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997706308] [2021-11-07 12:36:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:36:56,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:36:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:36:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:36:57,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:36:57,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997706308] [2021-11-07 12:36:57,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997706308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:36:57,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:36:57,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:36:57,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256229762] [2021-11-07 12:36:57,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:36:57,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:36:57,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:36:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:36:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:57,164 INFO L87 Difference]: Start difference. First operand 10927 states and 15433 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:36:57,371 INFO L93 Difference]: Finished difference Result 10927 states and 15433 transitions. [2021-11-07 12:36:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:36:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-11-07 12:36:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:36:57,420 INFO L225 Difference]: With dead ends: 10927 [2021-11-07 12:36:57,420 INFO L226 Difference]: Without dead ends: 10925 [2021-11-07 12:36:57,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:57,428 INFO L933 BasicCegarLoop]: 4024 mSDtfsCounter, 3948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3948 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.04ms IncrementalHoareTripleChecker+Time [2021-11-07 12:36:57,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3948 Valid, 4024 Invalid, 1 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.04ms Time] [2021-11-07 12:36:57,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10925 states. [2021-11-07 12:36:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10925 to 10925. [2021-11-07 12:36:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10925 states, 10861 states have (on average 1.4106435871466716) internal successors, (15321), 10868 states have internal predecessors, (15321), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-07 12:36:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10925 states to 10925 states and 15431 transitions. [2021-11-07 12:36:57,761 INFO L78 Accepts]: Start accepts. Automaton has 10925 states and 15431 transitions. Word has length 79 [2021-11-07 12:36:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:36:57,763 INFO L470 AbstractCegarLoop]: Abstraction has 10925 states and 15431 transitions. [2021-11-07 12:36:57,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10925 states and 15431 transitions. [2021-11-07 12:36:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 12:36:57,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:36:57,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:36:57,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:36:57,768 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:36:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:36:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash -252593173, now seen corresponding path program 1 times [2021-11-07 12:36:57,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:36:57,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512493342] [2021-11-07 12:36:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:36:57,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:36:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:36:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:36:58,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:36:58,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512493342] [2021-11-07 12:36:58,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512493342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:36:58,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:36:58,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:36:58,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565382544] [2021-11-07 12:36:58,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:36:58,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:36:58,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:36:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:36:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:58,091 INFO L87 Difference]: Start difference. First operand 10925 states and 15431 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:36:58,302 INFO L93 Difference]: Finished difference Result 10925 states and 15431 transitions. [2021-11-07 12:36:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:36:58,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-07 12:36:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:36:58,334 INFO L225 Difference]: With dead ends: 10925 [2021-11-07 12:36:58,335 INFO L226 Difference]: Without dead ends: 10923 [2021-11-07 12:36:58,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:58,344 INFO L933 BasicCegarLoop]: 4022 mSDtfsCounter, 3945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 4022 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.59ms IncrementalHoareTripleChecker+Time [2021-11-07 12:36:58,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3945 Valid, 4022 Invalid, 1 Unknown, 0 Unchecked, 9.46ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.59ms Time] [2021-11-07 12:36:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2021-11-07 12:36:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 10923. [2021-11-07 12:36:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10923 states, 10860 states have (on average 1.4105893186003684) internal successors, (15319), 10866 states have internal predecessors, (15319), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-07 12:36:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 15429 transitions. [2021-11-07 12:36:58,703 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 15429 transitions. Word has length 80 [2021-11-07 12:36:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:36:58,705 INFO L470 AbstractCegarLoop]: Abstraction has 10923 states and 15429 transitions. [2021-11-07 12:36:58,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 15429 transitions. [2021-11-07 12:36:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 12:36:58,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:36:58,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:36:58,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:36:58,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:36:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:36:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 759554122, now seen corresponding path program 1 times [2021-11-07 12:36:58,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:36:58,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575134373] [2021-11-07 12:36:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:36:58,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:36:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:36:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:36:58,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:36:58,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575134373] [2021-11-07 12:36:58,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575134373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:36:58,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:36:58,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:36:58,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331692584] [2021-11-07 12:36:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:36:58,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:36:58,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:36:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:36:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:58,896 INFO L87 Difference]: Start difference. First operand 10923 states and 15429 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:36:59,112 INFO L93 Difference]: Finished difference Result 10923 states and 15429 transitions. [2021-11-07 12:36:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:36:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-07 12:36:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:36:59,141 INFO L225 Difference]: With dead ends: 10923 [2021-11-07 12:36:59,141 INFO L226 Difference]: Without dead ends: 10921 [2021-11-07 12:36:59,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:59,148 INFO L933 BasicCegarLoop]: 4020 mSDtfsCounter, 3942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3942 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.61ms IncrementalHoareTripleChecker+Time [2021-11-07 12:36:59,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3942 Valid, 4020 Invalid, 1 Unknown, 0 Unchecked, 8.94ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.61ms Time] [2021-11-07 12:36:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10921 states. [2021-11-07 12:36:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10921 to 10921. [2021-11-07 12:36:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10921 states, 10859 states have (on average 1.4105350400589374) internal successors, (15317), 10864 states have internal predecessors, (15317), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-07 12:36:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 15427 transitions. [2021-11-07 12:36:59,534 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 15427 transitions. Word has length 81 [2021-11-07 12:36:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:36:59,534 INFO L470 AbstractCegarLoop]: Abstraction has 10921 states and 15427 transitions. [2021-11-07 12:36:59,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 15427 transitions. [2021-11-07 12:36:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 12:36:59,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:36:59,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:36:59,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:36:59,543 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:36:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:36:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2071349205, now seen corresponding path program 1 times [2021-11-07 12:36:59,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:36:59,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079149541] [2021-11-07 12:36:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:36:59,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:36:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:36:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:36:59,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:36:59,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079149541] [2021-11-07 12:36:59,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079149541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:36:59,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:36:59,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:36:59,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101663313] [2021-11-07 12:36:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:36:59,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:36:59,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:36:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:36:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:59,746 INFO L87 Difference]: Start difference. First operand 10921 states and 15427 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:36:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:36:59,960 INFO L93 Difference]: Finished difference Result 10921 states and 15427 transitions. [2021-11-07 12:36:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:36:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-07 12:36:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:36:59,988 INFO L225 Difference]: With dead ends: 10921 [2021-11-07 12:36:59,988 INFO L226 Difference]: Without dead ends: 10912 [2021-11-07 12:36:59,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:36:59,997 INFO L933 BasicCegarLoop]: 4019 mSDtfsCounter, 3939 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 12:36:59,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3939 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 7.66ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 12:37:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2021-11-07 12:37:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10912. [2021-11-07 12:37:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 10851 states have (on average 1.4104690811906737) internal successors, (15305), 10855 states have internal predecessors, (15305), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-07 12:37:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 15415 transitions. [2021-11-07 12:37:00,323 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 15415 transitions. Word has length 82 [2021-11-07 12:37:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:00,324 INFO L470 AbstractCegarLoop]: Abstraction has 10912 states and 15415 transitions. [2021-11-07 12:37:00,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:00,324 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 15415 transitions. [2021-11-07 12:37:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 12:37:00,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:00,335 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:37:00,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:37:00,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1181693351, now seen corresponding path program 1 times [2021-11-07 12:37:00,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:00,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102237518] [2021-11-07 12:37:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:00,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:37:00,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:00,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102237518] [2021-11-07 12:37:00,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102237518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:00,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:00,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:37:00,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469437628] [2021-11-07 12:37:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:00,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:37:00,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:37:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:37:00,626 INFO L87 Difference]: Start difference. First operand 10912 states and 15415 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:01,257 INFO L93 Difference]: Finished difference Result 28473 states and 40498 transitions. [2021-11-07 12:37:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:37:01,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-07 12:37:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:01,310 INFO L225 Difference]: With dead ends: 28473 [2021-11-07 12:37:01,310 INFO L226 Difference]: Without dead ends: 17686 [2021-11-07 12:37:01,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:37:01,343 INFO L933 BasicCegarLoop]: 4020 mSDtfsCounter, 2596 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 7862 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:01,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2596 Valid, 7862 Invalid, 24 Unknown, 0 Unchecked, 9.92ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 80.83ms Time] [2021-11-07 12:37:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17686 states. [2021-11-07 12:37:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17686 to 17678. [2021-11-07 12:37:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17678 states, 17617 states have (on average 1.4254413350740762) internal successors, (25112), 17621 states have internal predecessors, (25112), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-07 12:37:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 25222 transitions. [2021-11-07 12:37:02,080 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 25222 transitions. Word has length 139 [2021-11-07 12:37:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:02,081 INFO L470 AbstractCegarLoop]: Abstraction has 17678 states and 25222 transitions. [2021-11-07 12:37:02,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 25222 transitions. [2021-11-07 12:37:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 12:37:02,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:02,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-07 12:37:02,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:37:02,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:02,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1278191310, now seen corresponding path program 1 times [2021-11-07 12:37:02,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:02,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145883998] [2021-11-07 12:37:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:02,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:02,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:02,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145883998] [2021-11-07 12:37:02,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145883998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:02,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:02,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:37:02,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310365427] [2021-11-07 12:37:02,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:02,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:37:02,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:37:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:37:02,298 INFO L87 Difference]: Start difference. First operand 17678 states and 25222 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:04,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:37:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:04,795 INFO L93 Difference]: Finished difference Result 28230 states and 40311 transitions. [2021-11-07 12:37:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:37:04,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-07 12:37:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:04,824 INFO L225 Difference]: With dead ends: 28230 [2021-11-07 12:37:04,824 INFO L226 Difference]: Without dead ends: 10676 [2021-11-07 12:37:04,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:37:04,860 INFO L933 BasicCegarLoop]: 4016 mSDtfsCounter, 3 mSDsluCounter, 4009 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2047.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8025 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2161.35ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:04,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 8025 Invalid, 6 Unknown, 0 Unchecked, 6.77ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2161.35ms Time] [2021-11-07 12:37:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10676 states. [2021-11-07 12:37:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10676 to 10673. [2021-11-07 12:37:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10673 states, 10642 states have (on average 1.4263296372862244) internal successors, (15179), 10644 states have internal predecessors, (15179), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10673 states to 10673 states and 15234 transitions. [2021-11-07 12:37:05,163 INFO L78 Accepts]: Start accepts. Automaton has 10673 states and 15234 transitions. Word has length 162 [2021-11-07 12:37:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:05,163 INFO L470 AbstractCegarLoop]: Abstraction has 10673 states and 15234 transitions. [2021-11-07 12:37:05,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:05,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10673 states and 15234 transitions. [2021-11-07 12:37:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-07 12:37:05,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:05,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:05,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:37:05,179 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1388499896, now seen corresponding path program 1 times [2021-11-07 12:37:05,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:05,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579499303] [2021-11-07 12:37:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:05,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:05,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:05,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579499303] [2021-11-07 12:37:05,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579499303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:05,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:05,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:37:05,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848606934] [2021-11-07 12:37:05,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:05,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:37:05,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:37:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:37:05,454 INFO L87 Difference]: Start difference. First operand 10673 states and 15234 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:06,272 INFO L93 Difference]: Finished difference Result 33963 states and 48643 transitions. [2021-11-07 12:37:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:37:06,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 184 [2021-11-07 12:37:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:06,346 INFO L225 Difference]: With dead ends: 33963 [2021-11-07 12:37:06,346 INFO L226 Difference]: Without dead ends: 25107 [2021-11-07 12:37:06,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:37:06,377 INFO L933 BasicCegarLoop]: 6769 mSDtfsCounter, 8168 mSDsluCounter, 10734 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8172 SdHoareTripleChecker+Valid, 17503 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.72ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.49ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:06,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8172 Valid, 17503 Invalid, 45 Unknown, 0 Unchecked, 29.72ms Time], IncrementalHoareTripleChecker [13 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 67.49ms Time] [2021-11-07 12:37:06,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25107 states. [2021-11-07 12:37:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25107 to 10677. [2021-11-07 12:37:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10677 states, 10646 states have (on average 1.4261694533157994) internal successors, (15183), 10648 states have internal predecessors, (15183), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10677 states to 10677 states and 15238 transitions. [2021-11-07 12:37:06,846 INFO L78 Accepts]: Start accepts. Automaton has 10677 states and 15238 transitions. Word has length 184 [2021-11-07 12:37:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:06,846 INFO L470 AbstractCegarLoop]: Abstraction has 10677 states and 15238 transitions. [2021-11-07 12:37:06,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 10677 states and 15238 transitions. [2021-11-07 12:37:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-07 12:37:06,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:06,862 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:06,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:37:06,862 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 278785786, now seen corresponding path program 1 times [2021-11-07 12:37:06,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:06,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759733097] [2021-11-07 12:37:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:06,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:07,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:07,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759733097] [2021-11-07 12:37:07,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759733097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:07,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:07,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:37:07,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893692832] [2021-11-07 12:37:07,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:07,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:37:07,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:07,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:37:07,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:37:07,133 INFO L87 Difference]: Start difference. First operand 10677 states and 15238 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:08,432 INFO L93 Difference]: Finished difference Result 41315 states and 59194 transitions. [2021-11-07 12:37:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:37:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2021-11-07 12:37:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:08,528 INFO L225 Difference]: With dead ends: 41315 [2021-11-07 12:37:08,528 INFO L226 Difference]: Without dead ends: 32455 [2021-11-07 12:37:08,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.91ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:37:08,566 INFO L933 BasicCegarLoop]: 6835 mSDtfsCounter, 16490 mSDsluCounter, 20266 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16494 SdHoareTripleChecker+Valid, 27101 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.69ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.60ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:08,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16494 Valid, 27101 Invalid, 38 Unknown, 0 Unchecked, 44.69ms Time], IncrementalHoareTripleChecker [22 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 41.60ms Time] [2021-11-07 12:37:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32455 states. [2021-11-07 12:37:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32455 to 10683. [2021-11-07 12:37:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 10652 states have (on average 1.4259294029290275) internal successors, (15189), 10654 states have internal predecessors, (15189), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 15244 transitions. [2021-11-07 12:37:09,085 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 15244 transitions. Word has length 206 [2021-11-07 12:37:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:09,086 INFO L470 AbstractCegarLoop]: Abstraction has 10683 states and 15244 transitions. [2021-11-07 12:37:09,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:09,087 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 15244 transitions. [2021-11-07 12:37:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-07 12:37:09,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:09,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:09,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:37:09,103 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -130836703, now seen corresponding path program 1 times [2021-11-07 12:37:09,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:09,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154949090] [2021-11-07 12:37:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:09,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:09,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:09,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154949090] [2021-11-07 12:37:09,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154949090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:09,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:09,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:37:09,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490834111] [2021-11-07 12:37:09,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:09,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:37:09,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:37:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:37:09,338 INFO L87 Difference]: Start difference. First operand 10683 states and 15244 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:10,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:10,788 INFO L93 Difference]: Finished difference Result 41351 states and 59238 transitions. [2021-11-07 12:37:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:37:10,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-11-07 12:37:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:10,884 INFO L225 Difference]: With dead ends: 41351 [2021-11-07 12:37:10,884 INFO L226 Difference]: Without dead ends: 32485 [2021-11-07 12:37:10,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.32ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:37:10,928 INFO L933 BasicCegarLoop]: 6828 mSDtfsCounter, 16573 mSDsluCounter, 20338 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16577 SdHoareTripleChecker+Valid, 27166 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.18ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.57ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:10,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16577 Valid, 27166 Invalid, 38 Unknown, 0 Unchecked, 40.18ms Time], IncrementalHoareTripleChecker [22 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 47.57ms Time] [2021-11-07 12:37:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32485 states. [2021-11-07 12:37:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32485 to 10689. [2021-11-07 12:37:11,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10658 states have (on average 1.42568962281854) internal successors, (15195), 10660 states have internal predecessors, (15195), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 15250 transitions. [2021-11-07 12:37:11,615 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 15250 transitions. Word has length 208 [2021-11-07 12:37:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:11,615 INFO L470 AbstractCegarLoop]: Abstraction has 10689 states and 15250 transitions. [2021-11-07 12:37:11,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 15250 transitions. [2021-11-07 12:37:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 12:37:11,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:11,633 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:11,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:37:11,633 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:11,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:11,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2010053830, now seen corresponding path program 1 times [2021-11-07 12:37:11,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:11,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701807952] [2021-11-07 12:37:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:11,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:11,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:11,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701807952] [2021-11-07 12:37:11,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701807952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:37:11,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354153395] [2021-11-07 12:37:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:11,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:37:11,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:37:11,899 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) [2021-11-07 12:37:11,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:37:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:13,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 12:37:13,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:37:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:13,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:37:13,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354153395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:13,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:37:13,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-07 12:37:13,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347210649] [2021-11-07 12:37:13,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:13,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:37:13,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:37:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:37:13,607 INFO L87 Difference]: Start difference. First operand 10689 states and 15250 transitions. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:15,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:37:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:18,879 INFO L93 Difference]: Finished difference Result 72301 states and 103612 transitions. [2021-11-07 12:37:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 12:37:18,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 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 210 [2021-11-07 12:37:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:19,058 INFO L225 Difference]: With dead ends: 72301 [2021-11-07 12:37:19,059 INFO L226 Difference]: Without dead ends: 63429 [2021-11-07 12:37:19,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 215.81ms TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-07 12:37:19,090 INFO L933 BasicCegarLoop]: 13445 mSDtfsCounter, 26086 mSDsluCounter, 52365 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2315.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26090 SdHoareTripleChecker+Valid, 65810 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.16ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2533.97ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:19,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26090 Valid, 65810 Invalid, 289 Unknown, 0 Unchecked, 73.16ms Time], IncrementalHoareTripleChecker [72 Valid, 216 Invalid, 1 Unknown, 0 Unchecked, 2533.97ms Time] [2021-11-07 12:37:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63429 states. [2021-11-07 12:37:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63429 to 10719. [2021-11-07 12:37:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10688 states have (on average 1.4245883233532934) internal successors, (15226), 10690 states have internal predecessors, (15226), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15281 transitions. [2021-11-07 12:37:20,032 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15281 transitions. Word has length 210 [2021-11-07 12:37:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:20,032 INFO L470 AbstractCegarLoop]: Abstraction has 10719 states and 15281 transitions. [2021-11-07 12:37:20,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15281 transitions. [2021-11-07 12:37:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 12:37:20,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:20,049 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:20,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 12:37:20,263 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 [2021-11-07 12:37:20,264 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash 595969724, now seen corresponding path program 1 times [2021-11-07 12:37:20,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:20,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090229424] [2021-11-07 12:37:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:20,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:20,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:20,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090229424] [2021-11-07 12:37:20,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090229424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:20,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:20,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:37:20,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007682917] [2021-11-07 12:37:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:20,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:37:20,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:37:20,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:37:20,637 INFO L87 Difference]: Start difference. First operand 10719 states and 15281 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:22,164 INFO L93 Difference]: Finished difference Result 28081 states and 40042 transitions. [2021-11-07 12:37:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:37:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 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 210 [2021-11-07 12:37:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:22,204 INFO L225 Difference]: With dead ends: 28081 [2021-11-07 12:37:22,204 INFO L226 Difference]: Without dead ends: 19175 [2021-11-07 12:37:22,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:37:22,228 INFO L933 BasicCegarLoop]: 6715 mSDtfsCounter, 3543 mSDsluCounter, 10682 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 17397 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.06ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.96ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:22,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3549 Valid, 17397 Invalid, 76 Unknown, 0 Unchecked, 18.06ms Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 124.96ms Time] [2021-11-07 12:37:22,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19175 states. [2021-11-07 12:37:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19175 to 10719. [2021-11-07 12:37:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10688 states have (on average 1.4244011976047903) internal successors, (15224), 10690 states have internal predecessors, (15224), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15279 transitions. [2021-11-07 12:37:23,031 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15279 transitions. Word has length 210 [2021-11-07 12:37:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:23,032 INFO L470 AbstractCegarLoop]: Abstraction has 10719 states and 15279 transitions. [2021-11-07 12:37:23,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15279 transitions. [2021-11-07 12:37:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 12:37:23,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:23,045 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:23,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 12:37:23,045 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:23,046 INFO L85 PathProgramCache]: Analyzing trace with hash 213664640, now seen corresponding path program 1 times [2021-11-07 12:37:23,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:23,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318235352] [2021-11-07 12:37:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:23,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:23,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:23,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318235352] [2021-11-07 12:37:23,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318235352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:23,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:23,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:37:23,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634985397] [2021-11-07 12:37:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:23,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:37:23,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:37:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:37:23,492 INFO L87 Difference]: Start difference. First operand 10719 states and 15279 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:27,181 INFO L93 Difference]: Finished difference Result 58861 states and 84238 transitions. [2021-11-07 12:37:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:37:27,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 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 212 [2021-11-07 12:37:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:27,289 INFO L225 Difference]: With dead ends: 58861 [2021-11-07 12:37:27,290 INFO L226 Difference]: Without dead ends: 49959 [2021-11-07 12:37:27,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 134.22ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:37:27,319 INFO L933 BasicCegarLoop]: 6813 mSDtfsCounter, 34202 mSDsluCounter, 42281 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 288.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34208 SdHoareTripleChecker+Valid, 49094 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.55ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 339.69ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:27,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34208 Valid, 49094 Invalid, 285 Unknown, 0 Unchecked, 63.55ms Time], IncrementalHoareTripleChecker [89 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 339.69ms Time] [2021-11-07 12:37:27,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49959 states. [2021-11-07 12:37:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49959 to 10729. [2021-11-07 12:37:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10729 states, 10698 states have (on average 1.4240044868199664) internal successors, (15234), 10700 states have internal predecessors, (15234), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10729 states to 10729 states and 15289 transitions. [2021-11-07 12:37:28,270 INFO L78 Accepts]: Start accepts. Automaton has 10729 states and 15289 transitions. Word has length 212 [2021-11-07 12:37:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:28,271 INFO L470 AbstractCegarLoop]: Abstraction has 10729 states and 15289 transitions. [2021-11-07 12:37:28,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10729 states and 15289 transitions. [2021-11-07 12:37:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 12:37:28,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:28,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:28,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 12:37:28,286 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1253720964, now seen corresponding path program 1 times [2021-11-07 12:37:28,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:28,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665968463] [2021-11-07 12:37:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:28,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:28,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:28,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665968463] [2021-11-07 12:37:28,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665968463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:28,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:28,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:37:28,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158762706] [2021-11-07 12:37:28,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:28,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:37:28,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:37:28,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:37:28,648 INFO L87 Difference]: Start difference. First operand 10729 states and 15289 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:30,064 INFO L93 Difference]: Finished difference Result 26901 states and 38410 transitions. [2021-11-07 12:37:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:37:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 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 214 [2021-11-07 12:37:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:30,097 INFO L225 Difference]: With dead ends: 26901 [2021-11-07 12:37:30,098 INFO L226 Difference]: Without dead ends: 17989 [2021-11-07 12:37:30,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:37:30,121 INFO L933 BasicCegarLoop]: 6758 mSDtfsCounter, 5497 mSDsluCounter, 8025 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 14783 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.49ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.24ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:30,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5497 Valid, 14783 Invalid, 22 Unknown, 0 Unchecked, 14.49ms Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 47.24ms Time] [2021-11-07 12:37:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17989 states. [2021-11-07 12:37:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17989 to 10733. [2021-11-07 12:37:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 10702 states have (on average 1.4238460100915717) internal successors, (15238), 10704 states have internal predecessors, (15238), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15293 transitions. [2021-11-07 12:37:30,944 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15293 transitions. Word has length 214 [2021-11-07 12:37:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:30,944 INFO L470 AbstractCegarLoop]: Abstraction has 10733 states and 15293 transitions. [2021-11-07 12:37:30,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15293 transitions. [2021-11-07 12:37:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-07 12:37:30,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:30,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:30,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 12:37:30,958 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:30,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2082002527, now seen corresponding path program 1 times [2021-11-07 12:37:30,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:30,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643184661] [2021-11-07 12:37:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:30,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:31,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:31,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643184661] [2021-11-07 12:37:31,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643184661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:31,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:31,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:37:31,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280040740] [2021-11-07 12:37:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:31,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:37:31,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:37:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:37:31,336 INFO L87 Difference]: Start difference. First operand 10733 states and 15293 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:34,104 INFO L93 Difference]: Finished difference Result 44913 states and 64066 transitions. [2021-11-07 12:37:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:37:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 222 [2021-11-07 12:37:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:34,157 INFO L225 Difference]: With dead ends: 44913 [2021-11-07 12:37:34,157 INFO L226 Difference]: Without dead ends: 35997 [2021-11-07 12:37:34,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:37:34,180 INFO L933 BasicCegarLoop]: 10918 mSDtfsCounter, 9983 mSDsluCounter, 13625 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9995 SdHoareTripleChecker+Valid, 24543 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.40ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.78ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:34,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9995 Valid, 24543 Invalid, 127 Unknown, 0 Unchecked, 25.40ms Time], IncrementalHoareTripleChecker [26 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 192.78ms Time] [2021-11-07 12:37:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35997 states. [2021-11-07 12:37:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35997 to 10749. [2021-11-07 12:37:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10749 states, 10718 states have (on average 1.4235864900167943) internal successors, (15258), 10720 states have internal predecessors, (15258), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10749 states to 10749 states and 15313 transitions. [2021-11-07 12:37:35,102 INFO L78 Accepts]: Start accepts. Automaton has 10749 states and 15313 transitions. Word has length 222 [2021-11-07 12:37:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:35,102 INFO L470 AbstractCegarLoop]: Abstraction has 10749 states and 15313 transitions. [2021-11-07 12:37:35,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 10749 states and 15313 transitions. [2021-11-07 12:37:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 12:37:35,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:35,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:35,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 12:37:35,112 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1411220379, now seen corresponding path program 1 times [2021-11-07 12:37:35,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:35,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817168785] [2021-11-07 12:37:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:35,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:37:35,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:35,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817168785] [2021-11-07 12:37:35,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817168785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:35,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:35,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:37:35,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183442508] [2021-11-07 12:37:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:35,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:37:35,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:37:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:37:35,442 INFO L87 Difference]: Start difference. First operand 10749 states and 15313 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:38,807 INFO L93 Difference]: Finished difference Result 44909 states and 64058 transitions. [2021-11-07 12:37:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:37:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 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 224 [2021-11-07 12:37:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:38,863 INFO L225 Difference]: With dead ends: 44909 [2021-11-07 12:37:38,863 INFO L226 Difference]: Without dead ends: 35977 [2021-11-07 12:37:38,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.09ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:37:38,887 INFO L933 BasicCegarLoop]: 9562 mSDtfsCounter, 11299 mSDsluCounter, 23090 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11311 SdHoareTripleChecker+Valid, 32652 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.13ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.09ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:38,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11311 Valid, 32652 Invalid, 132 Unknown, 0 Unchecked, 33.13ms Time], IncrementalHoareTripleChecker [29 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 154.09ms Time] [2021-11-07 12:37:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35977 states. [2021-11-07 12:37:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35977 to 10755. [2021-11-07 12:37:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10755 states, 10724 states have (on average 1.423349496456546) internal successors, (15264), 10726 states have internal predecessors, (15264), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10755 states to 10755 states and 15319 transitions. [2021-11-07 12:37:39,809 INFO L78 Accepts]: Start accepts. Automaton has 10755 states and 15319 transitions. Word has length 224 [2021-11-07 12:37:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:39,810 INFO L470 AbstractCegarLoop]: Abstraction has 10755 states and 15319 transitions. [2021-11-07 12:37:39,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 10755 states and 15319 transitions. [2021-11-07 12:37:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-07 12:37:39,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:39,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:39,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:37:39,818 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash 748951241, now seen corresponding path program 1 times [2021-11-07 12:37:39,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:39,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348681274] [2021-11-07 12:37:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:39,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 12:37:40,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:40,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348681274] [2021-11-07 12:37:40,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348681274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:37:40,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:37:40,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:37:40,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182178530] [2021-11-07 12:37:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:37:40,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:37:40,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:37:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:37:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:37:40,276 INFO L87 Difference]: Start difference. First operand 10755 states and 15319 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:37:41,287 INFO L93 Difference]: Finished difference Result 21387 states and 30491 transitions. [2021-11-07 12:37:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:37:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 226 [2021-11-07 12:37:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:37:41,303 INFO L225 Difference]: With dead ends: 21387 [2021-11-07 12:37:41,304 INFO L226 Difference]: Without dead ends: 10756 [2021-11-07 12:37:41,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:37:41,317 INFO L933 BasicCegarLoop]: 4013 mSDtfsCounter, 0 mSDsluCounter, 3984 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7997 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.17ms IncrementalHoareTripleChecker+Time [2021-11-07 12:37:41,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7997 Invalid, 30 Unknown, 0 Unchecked, 6.14ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 53.17ms Time] [2021-11-07 12:37:41,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10756 states. [2021-11-07 12:37:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10756 to 10756. [2021-11-07 12:37:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10756 states, 10725 states have (on average 1.4233100233100233) internal successors, (15265), 10727 states have internal predecessors, (15265), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:37:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 15320 transitions. [2021-11-07 12:37:42,110 INFO L78 Accepts]: Start accepts. Automaton has 10756 states and 15320 transitions. Word has length 226 [2021-11-07 12:37:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:37:42,110 INFO L470 AbstractCegarLoop]: Abstraction has 10756 states and 15320 transitions. [2021-11-07 12:37:42,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:37:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 10756 states and 15320 transitions. [2021-11-07 12:37:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-07 12:37:42,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:37:42,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:37:42,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 12:37:42,121 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:37:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:37:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash 135552706, now seen corresponding path program 1 times [2021-11-07 12:37:42,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:37:42,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032291110] [2021-11-07 12:37:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:42,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:37:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:37:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 12:37:42,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:37:42,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032291110] [2021-11-07 12:37:42,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032291110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:37:42,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374979002] [2021-11-07 12:37:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:37:42,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:37:42,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:37:42,573 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) [2021-11-07 12:37:42,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 12:39:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:39:38,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 3893 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 12:39:38,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:39:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 12:39:38,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:39:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 12:39:38,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374979002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:39:38,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:39:38,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 12:39:38,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893853099] [2021-11-07 12:39:38,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:39:38,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:39:38,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:39:38,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:39:38,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:39:38,933 INFO L87 Difference]: Start difference. First operand 10756 states and 15320 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:39:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:39:40,163 INFO L93 Difference]: Finished difference Result 21402 states and 30520 transitions. [2021-11-07 12:39:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:39:40,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 [2021-11-07 12:39:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:39:40,188 INFO L225 Difference]: With dead ends: 21402 [2021-11-07 12:39:40,188 INFO L226 Difference]: Without dead ends: 10771 [2021-11-07 12:39:40,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 58.95ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:39:40,200 INFO L933 BasicCegarLoop]: 4010 mSDtfsCounter, 0 mSDsluCounter, 7968 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11978 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.09ms IncrementalHoareTripleChecker+Time [2021-11-07 12:39:40,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11978 Invalid, 81 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [18 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 150.09ms Time] [2021-11-07 12:39:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-11-07 12:39:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 10771. [2021-11-07 12:39:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10771 states, 10740 states have (on average 1.4227188081936686) internal successors, (15280), 10742 states have internal predecessors, (15280), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-07 12:39:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10771 states to 10771 states and 15335 transitions. [2021-11-07 12:39:41,017 INFO L78 Accepts]: Start accepts. Automaton has 10771 states and 15335 transitions. Word has length 227 [2021-11-07 12:39:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:39:41,017 INFO L470 AbstractCegarLoop]: Abstraction has 10771 states and 15335 transitions. [2021-11-07 12:39:41,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:39:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand 10771 states and 15335 transitions. [2021-11-07 12:39:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-07 12:39:41,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:39:41,027 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:39:41,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 12:39:41,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:39:41,240 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:39:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:39:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1435316983, now seen corresponding path program 2 times [2021-11-07 12:39:41,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:39:41,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296058922] [2021-11-07 12:39:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:39:41,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:39:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:39:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 12:39:42,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:39:42,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296058922] [2021-11-07 12:39:42,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296058922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:39:42,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:39:42,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 12:39:42,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261583331] [2021-11-07 12:39:42,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:39:42,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 12:39:42,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:39:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 12:39:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:39:42,259 INFO L87 Difference]: Start difference. First operand 10771 states and 15335 transitions. Second operand has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:39:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:39:50,902 INFO L93 Difference]: Finished difference Result 62312 states and 89097 transitions. [2021-11-07 12:39:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 12:39:50,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 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 230 [2021-11-07 12:39:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:39:51,025 INFO L225 Difference]: With dead ends: 62312 [2021-11-07 12:39:51,026 INFO L226 Difference]: Without dead ends: 53354 [2021-11-07 12:39:51,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 903.44ms TimeCoverageRelationStatistics Valid=420, Invalid=1140, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 12:39:51,068 INFO L933 BasicCegarLoop]: 15811 mSDtfsCounter, 79006 mSDsluCounter, 40871 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1306.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79006 SdHoareTripleChecker+Valid, 56682 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 112.73ms SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1542.76ms IncrementalHoareTripleChecker+Time [2021-11-07 12:39:51,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79006 Valid, 56682 Invalid, 1249 Unknown, 0 Unchecked, 112.73ms Time], IncrementalHoareTripleChecker [637 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 1542.76ms Time] [2021-11-07 12:39:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53354 states. [2021-11-07 12:39:52,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53354 to 15243. [2021-11-07 12:39:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15243 states, 15197 states have (on average 1.4218595775482004) internal successors, (21608), 15200 states have internal predecessors, (21608), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-07 12:39:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15243 states to 15243 states and 21685 transitions. [2021-11-07 12:39:52,869 INFO L78 Accepts]: Start accepts. Automaton has 15243 states and 21685 transitions. Word has length 230 [2021-11-07 12:39:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:39:52,870 INFO L470 AbstractCegarLoop]: Abstraction has 15243 states and 21685 transitions. [2021-11-07 12:39:52,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:39:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 15243 states and 21685 transitions. [2021-11-07 12:39:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-07 12:39:52,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:39:52,882 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:39:52,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 12:39:52,883 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:39:52,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:39:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 26683508, now seen corresponding path program 1 times [2021-11-07 12:39:52,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:39:52,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705234271] [2021-11-07 12:39:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:39:52,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:39:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:39:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 12:39:54,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:39:54,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705234271] [2021-11-07 12:39:54,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705234271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:39:54,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:39:54,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:39:54,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839356577] [2021-11-07 12:39:54,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:39:54,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:39:54,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:39:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:39:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:39:54,744 INFO L87 Difference]: Start difference. First operand 15243 states and 21685 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:39:56,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:39:58,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:40:01,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:40:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:40:40,967 INFO L93 Difference]: Finished difference Result 65613 states and 94302 transitions. [2021-11-07 12:40:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 12:40:40,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 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 241 [2021-11-07 12:40:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:40:41,237 INFO L225 Difference]: With dead ends: 65613 [2021-11-07 12:40:41,237 INFO L226 Difference]: Without dead ends: 52163 [2021-11-07 12:40:41,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 264.44ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-07 12:40:41,273 INFO L933 BasicCegarLoop]: 6735 mSDtfsCounter, 14206 mSDsluCounter, 21907 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 195 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35734.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14206 SdHoareTripleChecker+Valid, 28642 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.36ms SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39528.84ms IncrementalHoareTripleChecker+Time [2021-11-07 12:40:41,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14206 Valid, 28642 Invalid, 3941 Unknown, 0 Unchecked, 72.36ms Time], IncrementalHoareTripleChecker [195 Valid, 3743 Invalid, 3 Unknown, 0 Unchecked, 39528.84ms Time] [2021-11-07 12:40:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52163 states. [2021-11-07 12:40:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52163 to 15282. [2021-11-07 12:40:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15282 states, 15236 states have (on average 1.4215017064846416) internal successors, (21658), 15239 states have internal predecessors, (21658), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-07 12:40:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15282 states to 15282 states and 21735 transitions. [2021-11-07 12:40:43,161 INFO L78 Accepts]: Start accepts. Automaton has 15282 states and 21735 transitions. Word has length 241 [2021-11-07 12:40:43,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:40:43,162 INFO L470 AbstractCegarLoop]: Abstraction has 15282 states and 21735 transitions. [2021-11-07 12:40:43,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:40:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 15282 states and 21735 transitions. [2021-11-07 12:40:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-07 12:40:43,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:40:43,171 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:40:43,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 12:40:43,172 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:40:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:40:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1002675790, now seen corresponding path program 1 times [2021-11-07 12:40:43,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:40:43,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109230049] [2021-11-07 12:40:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:43,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:40:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:40:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 12:40:45,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:40:45,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109230049] [2021-11-07 12:40:45,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109230049] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:40:45,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000079866] [2021-11-07 12:40:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:45,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:40:45,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:40:45,526 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) [2021-11-07 12:40:45,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 12:44:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:44:23,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 4092 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-07 12:44:23,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:44:24,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 12:44:24,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 12:44:24,766 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-07 12:44:24,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 181 [2021-11-07 12:44:24,790 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-07 12:44:24,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 138 [2021-11-07 12:44:24,819 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-07 12:44:24,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 83 [2021-11-07 12:44:24,839 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-07 12:44:24,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 40 [2021-11-07 12:44:24,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-07 12:44:24,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-07 12:44:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 12:44:25,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:44:25,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000079866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:44:25,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:44:25,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [22] total 37 [2021-11-07 12:44:25,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873915482] [2021-11-07 12:44:25,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:44:25,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 12:44:25,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:44:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 12:44:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 12:44:25,011 INFO L87 Difference]: Start difference. First operand 15282 states and 21735 transitions. Second operand has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:44:27,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:45:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:22,307 INFO L93 Difference]: Finished difference Result 117846 states and 168959 transitions. [2021-11-07 12:45:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2021-11-07 12:45:22,309 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 0 states have call successors, (0), 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 241 [2021-11-07 12:45:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:22,620 INFO L225 Difference]: With dead ends: 117846 [2021-11-07 12:45:22,621 INFO L226 Difference]: Without dead ends: 104385 [2021-11-07 12:45:22,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15238 ImplicationChecksByTransitivity, 7991.49ms TimeCoverageRelationStatistics Valid=6106, Invalid=37784, Unknown=0, NotChecked=0, Total=43890 [2021-11-07 12:45:22,684 INFO L933 BasicCegarLoop]: 28910 mSDtfsCounter, 68844 mSDsluCounter, 128320 mSDsCounter, 0 mSdLazyCounter, 5068 mSolverCounterSat, 1345 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28648.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68844 SdHoareTripleChecker+Valid, 157230 SdHoareTripleChecker+Invalid, 6414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 252.29ms SdHoareTripleChecker+Time, 1345 IncrementalHoareTripleChecker+Valid, 5068 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32357.97ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:22,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68844 Valid, 157230 Invalid, 6414 Unknown, 0 Unchecked, 252.29ms Time], IncrementalHoareTripleChecker [1345 Valid, 5068 Invalid, 1 Unknown, 0 Unchecked, 32357.97ms Time] [2021-11-07 12:45:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104385 states. [2021-11-07 12:45:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104385 to 26468. [2021-11-07 12:45:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26468 states, 26422 states have (on average 1.4254030731965786) internal successors, (37662), 26425 states have internal predecessors, (37662), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-07 12:45:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26468 states to 26468 states and 37739 transitions. [2021-11-07 12:45:27,010 INFO L78 Accepts]: Start accepts. Automaton has 26468 states and 37739 transitions. Word has length 241 [2021-11-07 12:45:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:27,011 INFO L470 AbstractCegarLoop]: Abstraction has 26468 states and 37739 transitions. [2021-11-07 12:45:27,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:45:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 26468 states and 37739 transitions. [2021-11-07 12:45:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-07 12:45:27,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:27,026 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:27,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 12:45:27,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:45:27,240 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2134234407, now seen corresponding path program 1 times [2021-11-07 12:45:27,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:27,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773681576] [2021-11-07 12:45:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:27,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 12:45:27,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:27,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773681576] [2021-11-07 12:45:27,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773681576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:27,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:27,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:45:27,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821460735] [2021-11-07 12:45:27,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:27,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:45:27,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:45:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:45:27,489 INFO L87 Difference]: Start difference. First operand 26468 states and 37739 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2021-11-07 12:45:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:45:39,629 INFO L93 Difference]: Finished difference Result 96098 states and 137460 transitions. [2021-11-07 12:45:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:45:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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 251 [2021-11-07 12:45:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:45:39,755 INFO L225 Difference]: With dead ends: 96098 [2021-11-07 12:45:39,755 INFO L226 Difference]: Without dead ends: 71451 [2021-11-07 12:45:39,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:45:39,791 INFO L933 BasicCegarLoop]: 12920 mSDtfsCounter, 7092 mSDsluCounter, 12802 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7102 SdHoareTripleChecker+Valid, 25722 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.35ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.44ms IncrementalHoareTripleChecker+Time [2021-11-07 12:45:39,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7102 Valid, 25722 Invalid, 61 Unknown, 0 Unchecked, 26.35ms Time], IncrementalHoareTripleChecker [20 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 127.44ms Time] [2021-11-07 12:45:39,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71451 states. [2021-11-07 12:45:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71451 to 26461. [2021-11-07 12:45:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26461 states, 26415 states have (on average 1.425364376301344) internal successors, (37651), 26418 states have internal predecessors, (37651), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-07 12:45:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26461 states to 26461 states and 37728 transitions. [2021-11-07 12:45:44,179 INFO L78 Accepts]: Start accepts. Automaton has 26461 states and 37728 transitions. Word has length 251 [2021-11-07 12:45:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:45:44,179 INFO L470 AbstractCegarLoop]: Abstraction has 26461 states and 37728 transitions. [2021-11-07 12:45:44,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2021-11-07 12:45:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 26461 states and 37728 transitions. [2021-11-07 12:45:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-07 12:45:44,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:45:44,196 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:45:44,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 12:45:44,196 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:45:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:45:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1308802502, now seen corresponding path program 1 times [2021-11-07 12:45:44,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:45:44,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059807106] [2021-11-07 12:45:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:45:44,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 12:45:44,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:44,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059807106] [2021-11-07 12:45:44,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059807106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:44,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:44,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:45:44,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552658587] [2021-11-07 12:45:44,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:44,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:45:44,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:45:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:45:44,736 INFO L87 Difference]: Start difference. First operand 26461 states and 37728 transitions. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 5 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)