./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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 03:43:25,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:43:25,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:43:25,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:43:25,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:43:25,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:43:25,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:43:25,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:43:25,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:43:25,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:43:25,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:43:25,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:43:25,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:43:25,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:43:25,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:43:25,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:43:25,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:43:25,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:43:25,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:43:25,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:43:25,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:43:25,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:43:25,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:43:25,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:43:25,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:43:25,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:43:25,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:43:25,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:43:25,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:43:25,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:43:25,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:43:25,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:43:25,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:43:25,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:43:25,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:43:25,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:43:25,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:43:25,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:43:25,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:43:25,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:43:25,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:43:25,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:43:25,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:43:25,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:43:25,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:43:25,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:43:25,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:43:25,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:43:25,134 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:43:25,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:43:25,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:43:25,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:43:25,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:43:25,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:43:25,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:43:25,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:43:25,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:43:25,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:43:25,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:43:25,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:43:25,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:43:25,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:43:25,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:43:25,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:43:25,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:43:25,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:43:25,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:43:25,137 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:43:25,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:43:25,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:43:25,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:43:25,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2021-11-04 03:43:25,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:43:25,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:43:25,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:43:25,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:43:25,328 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:43:25,329 INFO L432 ainManager$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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-11-04 03:43:25,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00267f497/da2cef65a832464695c33949d24e0c4b/FLAG9d7a79e85 [2021-11-04 03:43:26,001 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:43:26,001 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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-11-04 03:43:26,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00267f497/da2cef65a832464695c33949d24e0c4b/FLAG9d7a79e85 [2021-11-04 03:43:26,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00267f497/da2cef65a832464695c33949d24e0c4b [2021-11-04 03:43:26,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:43:26,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:43:26,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:43:26,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:43:26,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:43:26,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:43:26" (1/1) ... [2021-11-04 03:43:26,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da1eac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:26, skipping insertion in model container [2021-11-04 03:43:26,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:43:26" (1/1) ... [2021-11-04 03:43:26,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:43:26,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:43:27,028 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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2021-11-04 03:43:27,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:43:27,415 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:43:27,572 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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2021-11-04 03:43:27,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:43:27,740 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:43:27,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27 WrapperNode [2021-11-04 03:43:27,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:43:27,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:43:27,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:43:27,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:43:27,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:27,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:27,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:43:27,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:43:27,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:43:27,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:43:27,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:27,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:28,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:28,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:28,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:28,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:28,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:28,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:43:28,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:43:28,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:43:28,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:43:28,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (1/1) ... [2021-11-04 03:43:28,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:43:28,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:43:28,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 03:43:28,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 03:43:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:43:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:43:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:43:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:43:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-04 03:43:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-04 03:43:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2021-11-04 03:43:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2021-11-04 03:43:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2021-11-04 03:43:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2021-11-04 03:43:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2021-11-04 03:43:28,224 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2021-11-04 03:43:28,224 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2021-11-04 03:43:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2021-11-04 03:43:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2021-11-04 03:43:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2021-11-04 03:43:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:43:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:43:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2021-11-04 03:43:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2021-11-04 03:43:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:43:28,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:43:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 03:43:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:43:28,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:43:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:43:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-04 03:43:28,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-04 03:43:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-04 03:43:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-04 03:43:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:43:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:43:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2021-11-04 03:43:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2021-11-04 03:43:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:43:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:43:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:43:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:43:31,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:43:31,918 INFO L299 CfgBuilder]: Removed 687 assume(true) statements. [2021-11-04 03:43:31,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:43:31 BoogieIcfgContainer [2021-11-04 03:43:31,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:43:31,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:43:31,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:43:31,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:43:31,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:43:26" (1/3) ... [2021-11-04 03:43:31,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b372f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:43:31, skipping insertion in model container [2021-11-04 03:43:31,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:27" (2/3) ... [2021-11-04 03:43:31,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b372f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:43:31, skipping insertion in model container [2021-11-04 03:43:31,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:43:31" (3/3) ... [2021-11-04 03:43:31,926 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-11-04 03:43:31,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:43:31,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-04 03:43:31,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:43:31,966 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 03:43:31,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-04 03:43:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 1205 states, 1168 states have (on average 1.5231164383561644) internal successors, (1779), 1175 states have internal predecessors, (1779), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 03:43:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-04 03:43:32,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:43:32,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:43:32,003 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)] === [2021-11-04 03:43:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:43:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1408021568, now seen corresponding path program 1 times [2021-11-04 03:43:32,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:43:32,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655154505] [2021-11-04 03:43:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:43:32,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:43:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:43:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:43:32,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:43:32,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655154505] [2021-11-04 03:43:32,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655154505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:43:32,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:43:32,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:43:32,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807925866] [2021-11-04 03:43:32,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:43:32,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:43:32,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:43:32,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:43:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:43:32,522 INFO L87 Difference]: Start difference. First operand has 1205 states, 1168 states have (on average 1.5231164383561644) internal successors, (1779), 1175 states have internal predecessors, (1779), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:43:34,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:36,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:43:44,823 INFO L93 Difference]: Finished difference Result 2406 states and 3653 transitions. [2021-11-04 03:43:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:43:44,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-04 03:43:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:43:44,839 INFO L225 Difference]: With dead ends: 2406 [2021-11-04 03:43:44,839 INFO L226 Difference]: Without dead ends: 1191 [2021-11-04 03:43:44,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:43:44,846 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11071.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11989.91ms IncrementalHoareTripleChecker+Time [2021-11-04 03:43:44,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 3495 Unknown, 0 Unchecked, 36.84ms Time], IncrementalHoareTripleChecker [0 Valid, 3494 Invalid, 1 Unknown, 0 Unchecked, 11989.91ms Time] [2021-11-04 03:43:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-11-04 03:43:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2021-11-04 03:43:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1155 states have (on average 1.5012987012987014) internal successors, (1734), 1161 states have internal predecessors, (1734), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 03:43:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1774 transitions. [2021-11-04 03:43:44,927 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1774 transitions. Word has length 18 [2021-11-04 03:43:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:43:44,927 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1774 transitions. [2021-11-04 03:43:44,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:43:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1774 transitions. [2021-11-04 03:43:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-04 03:43:44,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:43:44,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:43:44,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:43:44,930 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)] === [2021-11-04 03:43:44,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:43:44,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1848085822, now seen corresponding path program 1 times [2021-11-04 03:43:44,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:43:44,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902150335] [2021-11-04 03:43:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:43:44,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:43:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:43:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:43:45,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:43:45,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902150335] [2021-11-04 03:43:45,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902150335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:43:45,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:43:45,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:43:45,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561576727] [2021-11-04 03:43:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:43:45,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:43:45,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:43:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:43:45,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:43:45,116 INFO L87 Difference]: Start difference. First operand 1191 states and 1774 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:43:46,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:48,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:43:57,979 INFO L93 Difference]: Finished difference Result 3522 states and 5266 transitions. [2021-11-04 03:43:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:43:57,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-04 03:43:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:43:57,996 INFO L225 Difference]: With dead ends: 3522 [2021-11-04 03:43:57,996 INFO L226 Difference]: Without dead ends: 2343 [2021-11-04 03:43:57,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:43:58,000 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 1734 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11479.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.65ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12539.69ms IncrementalHoareTripleChecker+Time [2021-11-04 03:43:58,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 100 Invalid, 3459 Unknown, 0 Unchecked, 28.65ms Time], IncrementalHoareTripleChecker [3 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 12539.69ms Time] [2021-11-04 03:43:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2021-11-04 03:43:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2343. [2021-11-04 03:43:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2276 states have (on average 1.5039543057996485) internal successors, (3423), 2284 states have internal predecessors, (3423), 40 states have call successors, (40), 22 states have call predecessors, (40), 22 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-04 03:43:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3503 transitions. [2021-11-04 03:43:58,062 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3503 transitions. Word has length 19 [2021-11-04 03:43:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:43:58,062 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3503 transitions. [2021-11-04 03:43:58,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:43:58,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3503 transitions. [2021-11-04 03:43:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-04 03:43:58,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:43:58,064 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] [2021-11-04 03:43:58,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:43:58,065 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:43:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:43:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash -251512228, now seen corresponding path program 1 times [2021-11-04 03:43:58,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:43:58,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316722667] [2021-11-04 03:43:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:43:58,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:43:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:43:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 03:43:58,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:43:58,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316722667] [2021-11-04 03:43:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316722667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:43:58,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:43:58,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:43:58,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623946358] [2021-11-04 03:43:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:43:58,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:43:58,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:43:58,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:43:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:43:58,254 INFO L87 Difference]: Start difference. First operand 2343 states and 3503 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:43:59,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:04,369 INFO L93 Difference]: Finished difference Result 2373 states and 3531 transitions. [2021-11-04 03:44:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:44:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-04 03:44:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:04,378 INFO L225 Difference]: With dead ends: 2373 [2021-11-04 03:44:04,378 INFO L226 Difference]: Without dead ends: 2358 [2021-11-04 03:44:04,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:04,379 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1768 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5461.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.60ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5969.93ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:04,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1768 Valid, 40 Invalid, 1766 Unknown, 0 Unchecked, 5.60ms Time], IncrementalHoareTripleChecker [2 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 5969.93ms Time] [2021-11-04 03:44:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-11-04 03:44:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2343. [2021-11-04 03:44:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2276 states have (on average 1.5035149384885764) internal successors, (3422), 2284 states have internal predecessors, (3422), 40 states have call successors, (40), 22 states have call predecessors, (40), 22 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-04 03:44:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3502 transitions. [2021-11-04 03:44:04,421 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3502 transitions. Word has length 26 [2021-11-04 03:44:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:04,421 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3502 transitions. [2021-11-04 03:44:04,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3502 transitions. [2021-11-04 03:44:04,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-04 03:44:04,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:04,423 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] [2021-11-04 03:44:04,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:44:04,423 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:44:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash -251452646, now seen corresponding path program 1 times [2021-11-04 03:44:04,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:04,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114604282] [2021-11-04 03:44:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:04,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:44:04,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:04,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114604282] [2021-11-04 03:44:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114604282] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:44:04,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889434890] [2021-11-04 03:44:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:04,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:44:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:44:04,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:44:04,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 03:44:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:05,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 03:44:05,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:44:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:44:05,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:44:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:44:05,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889434890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:44:05,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:44:05,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 03:44:05,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964219698] [2021-11-04 03:44:05,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:44:05,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 03:44:05,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 03:44:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:44:05,784 INFO L87 Difference]: Start difference. First operand 2343 states and 3502 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:07,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:09,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:18,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:18,266 INFO L93 Difference]: Finished difference Result 4679 states and 6998 transitions. [2021-11-04 03:44:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 03:44:18,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-04 03:44:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:18,275 INFO L225 Difference]: With dead ends: 4679 [2021-11-04 03:44:18,275 INFO L226 Difference]: Without dead ends: 2346 [2021-11-04 03:44:18,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 128.31ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:44:18,281 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11354.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 3474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.55ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12264.21ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:18,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 3474 Unknown, 0 Unchecked, 23.55ms Time], IncrementalHoareTripleChecker [5 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 12264.21ms Time] [2021-11-04 03:44:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-11-04 03:44:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2346. [2021-11-04 03:44:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2279 states have (on average 1.5028521281263711) internal successors, (3425), 2287 states have internal predecessors, (3425), 40 states have call successors, (40), 22 states have call predecessors, (40), 22 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-04 03:44:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3505 transitions. [2021-11-04 03:44:18,326 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3505 transitions. Word has length 26 [2021-11-04 03:44:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:18,327 INFO L470 AbstractCegarLoop]: Abstraction has 2346 states and 3505 transitions. [2021-11-04 03:44:18,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3505 transitions. [2021-11-04 03:44:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-04 03:44:18,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:18,328 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:44:18,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 03:44:18,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:44:18,550 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:44:18,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2109305128, now seen corresponding path program 2 times [2021-11-04 03:44:18,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:18,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565094784] [2021-11-04 03:44:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:18,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:44:18,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:18,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565094784] [2021-11-04 03:44:18,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565094784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:44:18,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:44:18,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:44:18,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699395164] [2021-11-04 03:44:18,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:44:18,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:44:18,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:44:18,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:18,833 INFO L87 Difference]: Start difference. First operand 2346 states and 3505 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:20,877 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 [] [2021-11-04 03:44:29,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:29,881 INFO L93 Difference]: Finished difference Result 7006 states and 10600 transitions. [2021-11-04 03:44:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:44:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 29 [2021-11-04 03:44:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:29,901 INFO L225 Difference]: With dead ends: 7006 [2021-11-04 03:44:29,901 INFO L226 Difference]: Without dead ends: 4675 [2021-11-04 03:44:29,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:29,908 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 1757 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 3471 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9853.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.41ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10778.09ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:29,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1757 Valid, 120 Invalid, 3488 Unknown, 0 Unchecked, 19.41ms Time], IncrementalHoareTripleChecker [16 Valid, 3471 Invalid, 1 Unknown, 0 Unchecked, 10778.09ms Time] [2021-11-04 03:44:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2021-11-04 03:44:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4663. [2021-11-04 03:44:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4534 states have (on average 1.5006616674018527) internal successors, (6804), 4546 states have internal predecessors, (6804), 80 states have call successors, (80), 44 states have call predecessors, (80), 44 states have return successors, (120), 76 states have call predecessors, (120), 80 states have call successors, (120) [2021-11-04 03:44:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 7004 transitions. [2021-11-04 03:44:30,000 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 7004 transitions. Word has length 29 [2021-11-04 03:44:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:30,000 INFO L470 AbstractCegarLoop]: Abstraction has 4663 states and 7004 transitions. [2021-11-04 03:44:30,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 7004 transitions. [2021-11-04 03:44:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-04 03:44:30,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:30,001 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:44:30,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 03:44:30,002 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:44:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash -963947080, now seen corresponding path program 1 times [2021-11-04 03:44:30,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:30,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654399654] [2021-11-04 03:44:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:30,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:44:30,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:30,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654399654] [2021-11-04 03:44:30,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654399654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:44:30,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:44:30,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:44:30,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30643318] [2021-11-04 03:44:30,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:44:30,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:44:30,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:44:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:30,256 INFO L87 Difference]: Start difference. First operand 4663 states and 7004 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:31,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:40,710 INFO L93 Difference]: Finished difference Result 13941 states and 21305 transitions. [2021-11-04 03:44:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:44:40,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-04 03:44:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:40,742 INFO L225 Difference]: With dead ends: 13941 [2021-11-04 03:44:40,742 INFO L226 Difference]: Without dead ends: 9293 [2021-11-04 03:44:40,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:40,758 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 1753 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 3458 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9331.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 3465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.80ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10161.09ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:40,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 120 Invalid, 3465 Unknown, 0 Unchecked, 15.80ms Time], IncrementalHoareTripleChecker [7 Valid, 3458 Invalid, 0 Unknown, 0 Unchecked, 10161.09ms Time] [2021-11-04 03:44:40,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9293 states. [2021-11-04 03:44:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9293 to 9282. [2021-11-04 03:44:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 9029 states have (on average 1.4987263262819803) internal successors, (13532), 9049 states have internal predecessors, (13532), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-04 03:44:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 14052 transitions. [2021-11-04 03:44:41,029 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 14052 transitions. Word has length 30 [2021-11-04 03:44:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:41,030 INFO L470 AbstractCegarLoop]: Abstraction has 9282 states and 14052 transitions. [2021-11-04 03:44:41,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 14052 transitions. [2021-11-04 03:44:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-04 03:44:41,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:41,033 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:44:41,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 03:44:41,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:44:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 182414050, now seen corresponding path program 1 times [2021-11-04 03:44:41,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:41,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742514799] [2021-11-04 03:44:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:41,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:44:41,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:41,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742514799] [2021-11-04 03:44:41,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742514799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:44:41,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:44:41,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:44:41,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386256891] [2021-11-04 03:44:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:44:41,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:44:41,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:44:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:41,183 INFO L87 Difference]: Start difference. First operand 9282 states and 14052 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:43,223 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 [] [2021-11-04 03:44:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:52,743 INFO L93 Difference]: Finished difference Result 9287 states and 14056 transitions. [2021-11-04 03:44:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:44:52,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-04 03:44:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:52,771 INFO L225 Difference]: With dead ends: 9287 [2021-11-04 03:44:52,771 INFO L226 Difference]: Without dead ends: 9285 [2021-11-04 03:44:52,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:52,776 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 1750 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 3451 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10344.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.57ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11246.24ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:52,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 120 Invalid, 3456 Unknown, 0 Unchecked, 18.57ms Time], IncrementalHoareTripleChecker [4 Valid, 3451 Invalid, 1 Unknown, 0 Unchecked, 11246.24ms Time] [2021-11-04 03:44:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9285 states. [2021-11-04 03:44:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9285 to 9283. [2021-11-04 03:44:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9283 states, 9030 states have (on average 1.498671096345515) internal successors, (13533), 9050 states have internal predecessors, (13533), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-04 03:44:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9283 states to 9283 states and 14053 transitions. [2021-11-04 03:44:52,967 INFO L78 Accepts]: Start accepts. Automaton has 9283 states and 14053 transitions. Word has length 31 [2021-11-04 03:44:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:52,968 INFO L470 AbstractCegarLoop]: Abstraction has 9283 states and 14053 transitions. [2021-11-04 03:44:52,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 9283 states and 14053 transitions. [2021-11-04 03:44:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-04 03:44:52,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:52,969 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:44:52,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 03:44:52,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:44:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1359870722, now seen corresponding path program 1 times [2021-11-04 03:44:52,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:52,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666280044] [2021-11-04 03:44:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:52,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:44:53,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:53,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666280044] [2021-11-04 03:44:53,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666280044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:44:53,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:44:53,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:44:53,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229123939] [2021-11-04 03:44:53,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:44:53,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:44:53,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:44:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:53,119 INFO L87 Difference]: Start difference. First operand 9283 states and 14053 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:55,159 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 [] [2021-11-04 03:44:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:59,937 INFO L93 Difference]: Finished difference Result 9283 states and 14053 transitions. [2021-11-04 03:44:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:44:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-04 03:44:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:59,960 INFO L225 Difference]: With dead ends: 9283 [2021-11-04 03:44:59,961 INFO L226 Difference]: Without dead ends: 9281 [2021-11-04 03:44:59,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:59,966 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1744 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6085.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6638.06ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:59,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 40 Invalid, 1731 Unknown, 0 Unchecked, 8.52ms Time], IncrementalHoareTripleChecker [0 Valid, 1730 Invalid, 1 Unknown, 0 Unchecked, 6638.06ms Time] [2021-11-04 03:44:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2021-11-04 03:45:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 9281. [2021-11-04 03:45:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9281 states, 9029 states have (on average 1.4986155720456307) internal successors, (13531), 9048 states have internal predecessors, (13531), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-04 03:45:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9281 states to 9281 states and 14051 transitions. [2021-11-04 03:45:00,136 INFO L78 Accepts]: Start accepts. Automaton has 9281 states and 14051 transitions. Word has length 32 [2021-11-04 03:45:00,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:45:00,137 INFO L470 AbstractCegarLoop]: Abstraction has 9281 states and 14051 transitions. [2021-11-04 03:45:00,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:45:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 9281 states and 14051 transitions. [2021-11-04 03:45:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-04 03:45:00,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:45:00,138 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:45:00,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 03:45:00,138 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:45:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:45:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash -793678100, now seen corresponding path program 1 times [2021-11-04 03:45:00,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:45:00,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662939910] [2021-11-04 03:45:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:45:00,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:45:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:45:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:45:00,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:45:00,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662939910] [2021-11-04 03:45:00,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662939910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:45:00,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:45:00,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:45:00,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88401018] [2021-11-04 03:45:00,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:45:00,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:45:00,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:45:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:45:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:45:00,300 INFO L87 Difference]: Start difference. First operand 9281 states and 14051 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:45:02,340 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 [] [2021-11-04 03:45:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:45:07,237 INFO L93 Difference]: Finished difference Result 9281 states and 14051 transitions. [2021-11-04 03:45:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:45:07,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-04 03:45:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:45:07,260 INFO L225 Difference]: With dead ends: 9281 [2021-11-04 03:45:07,261 INFO L226 Difference]: Without dead ends: 9272 [2021-11-04 03:45:07,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:45:07,266 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 1741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6177.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6739.83ms IncrementalHoareTripleChecker+Time [2021-11-04 03:45:07,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 40 Invalid, 1729 Unknown, 0 Unchecked, 9.89ms Time], IncrementalHoareTripleChecker [0 Valid, 1728 Invalid, 1 Unknown, 0 Unchecked, 6739.83ms Time] [2021-11-04 03:45:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9272 states. [2021-11-04 03:45:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9272 to 9272. [2021-11-04 03:45:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 9021 states have (on average 1.4986143443077264) internal successors, (13519), 9039 states have internal predecessors, (13519), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-04 03:45:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 14039 transitions. [2021-11-04 03:45:07,495 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 14039 transitions. Word has length 33 [2021-11-04 03:45:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:45:07,495 INFO L470 AbstractCegarLoop]: Abstraction has 9272 states and 14039 transitions. [2021-11-04 03:45:07,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:45:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 14039 transitions. [2021-11-04 03:45:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-04 03:45:07,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:45:07,503 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-04 03:45:07,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 03:45:07,504 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)] === [2021-11-04 03:45:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:45:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2137916500, now seen corresponding path program 1 times [2021-11-04 03:45:07,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:45:07,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120172379] [2021-11-04 03:45:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:45:07,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:45:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:45:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:45:07,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:45:07,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120172379] [2021-11-04 03:45:07,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120172379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:45:07,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:45:07,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:45:07,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73891348] [2021-11-04 03:45:07,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:45:07,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:45:07,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:45:07,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:45:07,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:45:07,638 INFO L87 Difference]: Start difference. First operand 9272 states and 14039 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2021-11-04 03:45:09,679 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 [] [2021-11-04 03:45:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:45:18,347 INFO L93 Difference]: Finished difference Result 19195 states and 29113 transitions. [2021-11-04 03:45:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:45:18,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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 82 [2021-11-04 03:45:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:45:18,402 INFO L225 Difference]: With dead ends: 19195 [2021-11-04 03:45:18,402 INFO L226 Difference]: Without dead ends: 9938 [2021-11-04 03:45:18,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:45:18,433 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 135 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9619.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10366.11ms IncrementalHoareTripleChecker+Time [2021-11-04 03:45:18,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 80 Invalid, 3455 Unknown, 0 Unchecked, 15.88ms Time], IncrementalHoareTripleChecker [2 Valid, 3452 Invalid, 1 Unknown, 0 Unchecked, 10366.11ms Time] [2021-11-04 03:45:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9938 states. [2021-11-04 03:45:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9938 to 9916. [2021-11-04 03:45:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9665 states have (on average 1.5046042421107086) internal successors, (14542), 9683 states have internal predecessors, (14542), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-04 03:45:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 15062 transitions. [2021-11-04 03:45:18,605 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 15062 transitions. Word has length 82 [2021-11-04 03:45:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:45:18,606 INFO L470 AbstractCegarLoop]: Abstraction has 9916 states and 15062 transitions. [2021-11-04 03:45:18,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 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) [2021-11-04 03:45:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 15062 transitions. [2021-11-04 03:45:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 03:45:18,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:45:18,611 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:45:18,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 03:45:18,612 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)] === [2021-11-04 03:45:18,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:45:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash 435087626, now seen corresponding path program 1 times [2021-11-04 03:45:18,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:45:18,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474038393] [2021-11-04 03:45:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:45:18,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:45:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:45:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:45:18,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:45:18,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474038393] [2021-11-04 03:45:18,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474038393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:45:18,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:45:18,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:45:18,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535892608] [2021-11-04 03:45:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:45:18,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:45:18,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:45:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:45:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:45:18,773 INFO L87 Difference]: Start difference. First operand 9916 states and 15062 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:45:20,812 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 [] [2021-11-04 03:45:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:45:29,284 INFO L93 Difference]: Finished difference Result 19825 states and 30123 transitions. [2021-11-04 03:45:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:45:29,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2021-11-04 03:45:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:45:29,310 INFO L225 Difference]: With dead ends: 19825 [2021-11-04 03:45:29,310 INFO L226 Difference]: Without dead ends: 9924 [2021-11-04 03:45:29,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:45:29,329 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 3451 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9549.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 3452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10237.87ms IncrementalHoareTripleChecker+Time [2021-11-04 03:45:29,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 3452 Unknown, 0 Unchecked, 14.72ms Time], IncrementalHoareTripleChecker [0 Valid, 3451 Invalid, 1 Unknown, 0 Unchecked, 10237.87ms Time] [2021-11-04 03:45:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9924 states. [2021-11-04 03:45:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9924 to 9924. [2021-11-04 03:45:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9924 states, 9673 states have (on average 1.5041869120231572) internal successors, (14550), 9691 states have internal predecessors, (14550), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-04 03:45:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 15070 transitions. [2021-11-04 03:45:29,558 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 15070 transitions. Word has length 90 [2021-11-04 03:45:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:45:29,560 INFO L470 AbstractCegarLoop]: Abstraction has 9924 states and 15070 transitions. [2021-11-04 03:45:29,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:45:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 15070 transitions. [2021-11-04 03:45:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 03:45:29,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:45:29,566 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:45:29,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 03:45:29,566 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)] === [2021-11-04 03:45:29,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:45:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash 40720840, now seen corresponding path program 1 times [2021-11-04 03:45:29,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:45:29,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335375696] [2021-11-04 03:45:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:45:29,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:45:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:45:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:45:29,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:45:29,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335375696] [2021-11-04 03:45:29,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335375696] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:45:29,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171972497] [2021-11-04 03:45:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:45:29,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:45:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:45:29,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:45:29,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 03:45:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:45:30,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 03:45:30,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:45:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:45:31,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:45:31,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171972497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:45:31,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:45:31,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-04 03:45:31,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497984247] [2021-11-04 03:45:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:45:31,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 03:45:31,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:45:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 03:45:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:45:31,002 INFO L87 Difference]: Start difference. First operand 9924 states and 15070 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:45:33,043 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 [] [2021-11-04 03:45:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:45:57,746 INFO L93 Difference]: Finished difference Result 30750 states and 46684 transitions. [2021-11-04 03:45:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 03:45:57,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2021-11-04 03:45:57,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:45:57,791 INFO L225 Difference]: With dead ends: 30750 [2021-11-04 03:45:57,791 INFO L226 Difference]: Without dead ends: 20841 [2021-11-04 03:45:57,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 157.85ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-04 03:45:57,811 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 3266 mSDsluCounter, 7086 mSDsCounter, 0 mSdLazyCounter, 10341 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24342.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3267 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 10350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.07ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 10341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25973.70ms IncrementalHoareTripleChecker+Time [2021-11-04 03:45:57,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3267 Valid, 277 Invalid, 10350 Unknown, 0 Unchecked, 89.07ms Time], IncrementalHoareTripleChecker [8 Valid, 10341 Invalid, 1 Unknown, 0 Unchecked, 25973.70ms Time] [2021-11-04 03:45:57,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20841 states. [2021-11-04 03:45:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20841 to 10436. [2021-11-04 03:45:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10436 states, 10177 states have (on average 1.5020143460744817) internal successors, (15286), 10195 states have internal predecessors, (15286), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-04 03:45:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10436 states to 10436 states and 15832 transitions. [2021-11-04 03:45:58,123 INFO L78 Accepts]: Start accepts. Automaton has 10436 states and 15832 transitions. Word has length 90 [2021-11-04 03:45:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:45:58,124 INFO L470 AbstractCegarLoop]: Abstraction has 10436 states and 15832 transitions. [2021-11-04 03:45:58,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:45:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 10436 states and 15832 transitions. [2021-11-04 03:45:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 03:45:58,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:45:58,134 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:45:58,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 03:45:58,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-04 03:45:58,344 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)] === [2021-11-04 03:45:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:45:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash 741785418, now seen corresponding path program 1 times [2021-11-04 03:45:58,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:45:58,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363426356] [2021-11-04 03:45:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:45:58,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:45:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:45:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:45:58,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:45:58,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363426356] [2021-11-04 03:45:58,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363426356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:45:58,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:45:58,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:45:58,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001035374] [2021-11-04 03:45:58,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:45:58,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:45:58,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:45:58,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:45:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:45:58,633 INFO L87 Difference]: Start difference. First operand 10436 states and 15832 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:46:00,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:02,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:05,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:46:20,107 INFO L93 Difference]: Finished difference Result 26490 states and 40216 transitions. [2021-11-04 03:46:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:46:20,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2021-11-04 03:46:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:46:20,163 INFO L225 Difference]: With dead ends: 26490 [2021-11-04 03:46:20,163 INFO L226 Difference]: Without dead ends: 16021 [2021-11-04 03:46:20,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:46:20,183 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 848 mSDsluCounter, 3936 mSDsCounter, 0 mSdLazyCounter, 6068 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19395.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 6081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.71ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6068 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20916.10ms IncrementalHoareTripleChecker+Time [2021-11-04 03:46:20,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 132 Invalid, 6081 Unknown, 0 Unchecked, 37.71ms Time], IncrementalHoareTripleChecker [11 Valid, 6068 Invalid, 2 Unknown, 0 Unchecked, 20916.10ms Time] [2021-11-04 03:46:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16021 states. [2021-11-04 03:46:20,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16021 to 10436. [2021-11-04 03:46:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10436 states, 10177 states have (on average 1.4996560872555762) internal successors, (15262), 10195 states have internal predecessors, (15262), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-04 03:46:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10436 states to 10436 states and 15808 transitions. [2021-11-04 03:46:20,461 INFO L78 Accepts]: Start accepts. Automaton has 10436 states and 15808 transitions. Word has length 90 [2021-11-04 03:46:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:46:20,462 INFO L470 AbstractCegarLoop]: Abstraction has 10436 states and 15808 transitions. [2021-11-04 03:46:20,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:46:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 10436 states and 15808 transitions. [2021-11-04 03:46:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-04 03:46:20,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:46:20,469 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:46:20,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 03:46:20,469 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)] === [2021-11-04 03:46:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:46:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -613647098, now seen corresponding path program 1 times [2021-11-04 03:46:20,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:46:20,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446402594] [2021-11-04 03:46:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:46:20,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:46:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:46:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:46:20,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:46:20,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446402594] [2021-11-04 03:46:20,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446402594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:46:20,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:46:20,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-04 03:46:20,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217079574] [2021-11-04 03:46:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:46:20,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 03:46:20,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:46:20,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 03:46:20,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:46:20,976 INFO L87 Difference]: Start difference. First operand 10436 states and 15808 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:46:23,022 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 [] [2021-11-04 03:46:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:46:56,160 INFO L93 Difference]: Finished difference Result 40598 states and 61700 transitions. [2021-11-04 03:46:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-04 03:46:56,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-04 03:46:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:46:56,212 INFO L225 Difference]: With dead ends: 40598 [2021-11-04 03:46:56,212 INFO L226 Difference]: Without dead ends: 30177 [2021-11-04 03:46:56,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 431.19ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-04 03:46:56,229 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 7362 mSDsluCounter, 12392 mSDsCounter, 0 mSdLazyCounter, 14707 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31694.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7365 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 14748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.12ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 14707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33753.53ms IncrementalHoareTripleChecker+Time [2021-11-04 03:46:56,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7365 Valid, 294 Invalid, 14748 Unknown, 0 Unchecked, 101.12ms Time], IncrementalHoareTripleChecker [40 Valid, 14707 Invalid, 1 Unknown, 0 Unchecked, 33753.53ms Time] [2021-11-04 03:46:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30177 states. [2021-11-04 03:46:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30177 to 10476. [2021-11-04 03:46:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10476 states, 10217 states have (on average 1.49769991191152) internal successors, (15302), 10235 states have internal predecessors, (15302), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-04 03:46:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10476 states to 10476 states and 15848 transitions. [2021-11-04 03:46:56,649 INFO L78 Accepts]: Start accepts. Automaton has 10476 states and 15848 transitions. Word has length 92 [2021-11-04 03:46:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:46:56,649 INFO L470 AbstractCegarLoop]: Abstraction has 10476 states and 15848 transitions. [2021-11-04 03:46:56,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:46:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10476 states and 15848 transitions. [2021-11-04 03:46:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-04 03:46:56,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:46:56,656 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:46:56,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 03:46:56,656 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)] === [2021-11-04 03:46:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:46:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1336971390, now seen corresponding path program 1 times [2021-11-04 03:46:56,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:46:56,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48135499] [2021-11-04 03:46:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:46:56,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:46:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:46:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:46:56,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:46:56,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48135499] [2021-11-04 03:46:56,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48135499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:46:56,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:46:56,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:46:56,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083169505] [2021-11-04 03:46:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:46:56,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:46:56,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:46:56,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:46:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:46:56,937 INFO L87 Difference]: Start difference. First operand 10476 states and 15848 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:46:58,977 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 [] [2021-11-04 03:47:17,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:47:17,282 INFO L93 Difference]: Finished difference Result 35572 states and 53914 transitions. [2021-11-04 03:47:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:47:17,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 94 [2021-11-04 03:47:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:47:17,327 INFO L225 Difference]: With dead ends: 35572 [2021-11-04 03:47:17,327 INFO L226 Difference]: Without dead ends: 25111 [2021-11-04 03:47:17,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:47:17,341 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 2376 mSDsluCounter, 4724 mSDsCounter, 0 mSdLazyCounter, 7562 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17988.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 7577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.77ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 7562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19376.56ms IncrementalHoareTripleChecker+Time [2021-11-04 03:47:17,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2382 Valid, 147 Invalid, 7577 Unknown, 0 Unchecked, 47.77ms Time], IncrementalHoareTripleChecker [14 Valid, 7562 Invalid, 1 Unknown, 0 Unchecked, 19376.56ms Time] [2021-11-04 03:47:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25111 states. [2021-11-04 03:47:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25111 to 10540. [2021-11-04 03:47:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10540 states, 10281 states have (on average 1.4961579612878124) internal successors, (15382), 10299 states have internal predecessors, (15382), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-04 03:47:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10540 states to 10540 states and 15928 transitions. [2021-11-04 03:47:17,776 INFO L78 Accepts]: Start accepts. Automaton has 10540 states and 15928 transitions. Word has length 94 [2021-11-04 03:47:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:47:17,776 INFO L470 AbstractCegarLoop]: Abstraction has 10540 states and 15928 transitions. [2021-11-04 03:47:17,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 10540 states and 15928 transitions. [2021-11-04 03:47:17,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 03:47:17,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:47:17,785 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:47:17,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 03:47:17,786 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)] === [2021-11-04 03:47:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:47:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash 324967742, now seen corresponding path program 1 times [2021-11-04 03:47:17,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:47:17,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601563028] [2021-11-04 03:47:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:17,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:47:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:47:18,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:47:18,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601563028] [2021-11-04 03:47:18,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601563028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:47:18,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:47:18,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-04 03:47:18,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977998049] [2021-11-04 03:47:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:47:18,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 03:47:18,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:47:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 03:47:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 03:47:18,429 INFO L87 Difference]: Start difference. First operand 10540 states and 15928 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:20,472 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 [] [2021-11-04 03:49:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:49:12,632 INFO L93 Difference]: Finished difference Result 48885 states and 74147 transitions. [2021-11-04 03:49:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-04 03:49:12,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 96 [2021-11-04 03:49:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:49:12,719 INFO L225 Difference]: With dead ends: 48885 [2021-11-04 03:49:12,719 INFO L226 Difference]: Without dead ends: 38360 [2021-11-04 03:49:12,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 2157.12ms TimeCoverageRelationStatistics Valid=507, Invalid=1749, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 03:49:12,739 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 10611 mSDsluCounter, 35446 mSDsCounter, 0 mSdLazyCounter, 44398 mSolverCounterSat, 334 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102090.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10613 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 44733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 363.13ms SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 44398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108885.62ms IncrementalHoareTripleChecker+Time [2021-11-04 03:49:12,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10613 Valid, 914 Invalid, 44733 Unknown, 0 Unchecked, 363.13ms Time], IncrementalHoareTripleChecker [334 Valid, 44398 Invalid, 1 Unknown, 0 Unchecked, 108885.62ms Time] [2021-11-04 03:49:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38360 states. [2021-11-04 03:49:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38360 to 10481. [2021-11-04 03:49:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10481 states, 10222 states have (on average 1.4954020739581295) internal successors, (15286), 10240 states have internal predecessors, (15286), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-04 03:49:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10481 states to 10481 states and 15832 transitions. [2021-11-04 03:49:13,374 INFO L78 Accepts]: Start accepts. Automaton has 10481 states and 15832 transitions. Word has length 96 [2021-11-04 03:49:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:49:13,375 INFO L470 AbstractCegarLoop]: Abstraction has 10481 states and 15832 transitions. [2021-11-04 03:49:13,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 10481 states and 15832 transitions. [2021-11-04 03:49:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-04 03:49:13,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:49:13,382 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:49:13,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 03:49:13,383 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)] === [2021-11-04 03:49:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:49:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1783800400, now seen corresponding path program 1 times [2021-11-04 03:49:13,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:49:13,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9505710] [2021-11-04 03:49:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:13,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:49:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:49:13,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:49:13,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9505710] [2021-11-04 03:49:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9505710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:49:13,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:49:13,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 03:49:13,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982476346] [2021-11-04 03:49:13,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:49:13,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 03:49:13,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:49:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 03:49:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-04 03:49:13,764 INFO L87 Difference]: Start difference. First operand 10481 states and 15832 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:15,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:41,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:49:41,635 INFO L93 Difference]: Finished difference Result 24723 states and 37351 transitions. [2021-11-04 03:49:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 03:49:41,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 104 [2021-11-04 03:49:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:49:41,663 INFO L225 Difference]: With dead ends: 24723 [2021-11-04 03:49:41,663 INFO L226 Difference]: Without dead ends: 14257 [2021-11-04 03:49:41,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 220.83ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-04 03:49:41,675 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 4874 mSDsluCounter, 8004 mSDsCounter, 0 mSdLazyCounter, 10375 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24808.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4874 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 10394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.30ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 10375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26597.17ms IncrementalHoareTripleChecker+Time [2021-11-04 03:49:41,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4874 Valid, 378 Invalid, 10394 Unknown, 0 Unchecked, 81.30ms Time], IncrementalHoareTripleChecker [18 Valid, 10375 Invalid, 1 Unknown, 0 Unchecked, 26597.17ms Time] [2021-11-04 03:49:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14257 states. [2021-11-04 03:49:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14257 to 10103. [2021-11-04 03:49:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10103 states, 9852 states have (on average 1.4965489240763297) internal successors, (14744), 9862 states have internal predecessors, (14744), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (366), 160 states have call predecessors, (366), 160 states have call successors, (366) [2021-11-04 03:49:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10103 states to 10103 states and 15270 transitions. [2021-11-04 03:49:42,104 INFO L78 Accepts]: Start accepts. Automaton has 10103 states and 15270 transitions. Word has length 104 [2021-11-04 03:49:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:49:42,104 INFO L470 AbstractCegarLoop]: Abstraction has 10103 states and 15270 transitions. [2021-11-04 03:49:42,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 10103 states and 15270 transitions. [2021-11-04 03:49:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-04 03:49:42,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:49:42,110 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:49:42,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-04 03:49:42,111 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)] === [2021-11-04 03:49:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:49:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 334014503, now seen corresponding path program 1 times [2021-11-04 03:49:42,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:49:42,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335989186] [2021-11-04 03:49:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:42,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:49:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:49:42,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:49:42,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335989186] [2021-11-04 03:49:42,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335989186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:49:42,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:49:42,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-04 03:49:42,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948071600] [2021-11-04 03:49:42,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:49:42,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 03:49:42,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:49:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 03:49:42,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 03:49:42,629 INFO L87 Difference]: Start difference. First operand 10103 states and 15270 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:44,667 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 [] [2021-11-04 03:51:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:51:14,379 INFO L93 Difference]: Finished difference Result 39600 states and 60085 transitions. [2021-11-04 03:51:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-04 03:51:14,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 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 104 [2021-11-04 03:51:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:51:14,436 INFO L225 Difference]: With dead ends: 39600 [2021-11-04 03:51:14,436 INFO L226 Difference]: Without dead ends: 29512 [2021-11-04 03:51:14,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1999.67ms TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2021-11-04 03:51:14,452 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 12245 mSDsluCounter, 29954 mSDsCounter, 0 mSdLazyCounter, 36010 mSolverCounterSat, 273 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81370.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12247 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 36284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 292.38ms SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 36010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86801.49ms IncrementalHoareTripleChecker+Time [2021-11-04 03:51:14,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12247 Valid, 774 Invalid, 36284 Unknown, 0 Unchecked, 292.38ms Time], IncrementalHoareTripleChecker [273 Valid, 36010 Invalid, 1 Unknown, 0 Unchecked, 86801.49ms Time] [2021-11-04 03:51:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29512 states. [2021-11-04 03:51:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29512 to 10047. [2021-11-04 03:51:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10047 states, 9796 states have (on average 1.495712535728869) internal successors, (14652), 9806 states have internal predecessors, (14652), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (366), 160 states have call predecessors, (366), 160 states have call successors, (366) [2021-11-04 03:51:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10047 states to 10047 states and 15178 transitions. [2021-11-04 03:51:15,074 INFO L78 Accepts]: Start accepts. Automaton has 10047 states and 15178 transitions. Word has length 104 [2021-11-04 03:51:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:51:15,074 INFO L470 AbstractCegarLoop]: Abstraction has 10047 states and 15178 transitions. [2021-11-04 03:51:15,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:51:15,075 INFO L276 IsEmpty]: Start isEmpty. Operand 10047 states and 15178 transitions. [2021-11-04 03:51:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-04 03:51:15,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:51:15,081 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:51:15,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-04 03:51:15,081 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)] === [2021-11-04 03:51:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:51:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1455193886, now seen corresponding path program 1 times [2021-11-04 03:51:15,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:51:15,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424945641] [2021-11-04 03:51:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:51:15,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:51:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:51:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:51:15,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:51:15,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424945641] [2021-11-04 03:51:15,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424945641] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:51:15,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940696227] [2021-11-04 03:51:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:51:15,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:51:15,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:51:15,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:51:15,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 03:51:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:51:16,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 03:51:16,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:51:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:51:16,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:51:16,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940696227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:51:16,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:51:16,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-04 03:51:16,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134965966] [2021-11-04 03:51:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:51:16,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:51:16,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:51:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:51:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:51:16,584 INFO L87 Difference]: Start difference. First operand 10047 states and 15178 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:51:18,623 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 [] [2021-11-04 03:51:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:51:37,511 INFO L93 Difference]: Finished difference Result 30117 states and 45504 transitions. [2021-11-04 03:51:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:51:37,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 109 [2021-11-04 03:51:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:51:37,572 INFO L225 Difference]: With dead ends: 30117 [2021-11-04 03:51:37,572 INFO L226 Difference]: Without dead ends: 30103 [2021-11-04 03:51:37,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:51:37,581 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 3372 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 6795 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17710.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3372 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 6820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.48ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19196.56ms IncrementalHoareTripleChecker+Time [2021-11-04 03:51:37,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3372 Valid, 140 Invalid, 6820 Unknown, 0 Unchecked, 56.48ms Time], IncrementalHoareTripleChecker [24 Valid, 6795 Invalid, 1 Unknown, 0 Unchecked, 19196.56ms Time] [2021-11-04 03:51:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30103 states. [2021-11-04 03:51:38,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30103 to 28955. [2021-11-04 03:51:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28955 states, 28208 states have (on average 1.4984401588201928) internal successors, (42268), 28234 states have internal predecessors, (42268), 480 states have call successors, (480), 264 states have call predecessors, (480), 264 states have return successors, (1098), 480 states have call predecessors, (1098), 480 states have call successors, (1098) [2021-11-04 03:51:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28955 states to 28955 states and 43846 transitions. [2021-11-04 03:51:38,930 INFO L78 Accepts]: Start accepts. Automaton has 28955 states and 43846 transitions. Word has length 109 [2021-11-04 03:51:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:51:38,930 INFO L470 AbstractCegarLoop]: Abstraction has 28955 states and 43846 transitions. [2021-11-04 03:51:38,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:51:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 28955 states and 43846 transitions. [2021-11-04 03:51:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-04 03:51:38,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:51:38,939 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:51:38,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 03:51:39,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:51:39,160 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)] === [2021-11-04 03:51:39,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:51:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2138708832, now seen corresponding path program 1 times [2021-11-04 03:51:39,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:51:39,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794783125] [2021-11-04 03:51:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:51:39,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:51:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:51:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:51:39,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:51:39,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794783125] [2021-11-04 03:51:39,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794783125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:51:39,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:51:39,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:51:39,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180806580] [2021-11-04 03:51:39,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:51:39,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:51:39,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:51:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:51:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:51:39,339 INFO L87 Difference]: Start difference. First operand 28955 states and 43846 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:51:41,380 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 [] [2021-11-04 03:52:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:52:04,357 INFO L93 Difference]: Finished difference Result 95657 states and 145129 transitions. [2021-11-04 03:52:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:52:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 109 [2021-11-04 03:52:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:52:04,521 INFO L225 Difference]: With dead ends: 95657 [2021-11-04 03:52:04,522 INFO L226 Difference]: Without dead ends: 66717 [2021-11-04 03:52:04,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:52:04,565 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 2773 mSDsluCounter, 5192 mSDsCounter, 0 mSdLazyCounter, 8463 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19982.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 8469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8463 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21461.70ms IncrementalHoareTripleChecker+Time [2021-11-04 03:52:04,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 200 Invalid, 8469 Unknown, 0 Unchecked, 55.51ms Time], IncrementalHoareTripleChecker [5 Valid, 8463 Invalid, 1 Unknown, 0 Unchecked, 21461.70ms Time] [2021-11-04 03:52:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66717 states. [2021-11-04 03:52:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66717 to 28971. [2021-11-04 03:52:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28971 states, 28224 states have (on average 1.498157596371882) internal successors, (42284), 28250 states have internal predecessors, (42284), 480 states have call successors, (480), 264 states have call predecessors, (480), 264 states have return successors, (1098), 480 states have call predecessors, (1098), 480 states have call successors, (1098) [2021-11-04 03:52:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28971 states to 28971 states and 43862 transitions. [2021-11-04 03:52:06,368 INFO L78 Accepts]: Start accepts. Automaton has 28971 states and 43862 transitions. Word has length 109 [2021-11-04 03:52:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:52:06,368 INFO L470 AbstractCegarLoop]: Abstraction has 28971 states and 43862 transitions. [2021-11-04 03:52:06,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:52:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 28971 states and 43862 transitions. [2021-11-04 03:52:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-04 03:52:06,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:52:06,377 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:52:06,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-04 03:52:06,378 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)] === [2021-11-04 03:52:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:52:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -833300708, now seen corresponding path program 1 times [2021-11-04 03:52:06,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:52:06,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998343625] [2021-11-04 03:52:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:52:06,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:52:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:52:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:52:07,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:52:07,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998343625] [2021-11-04 03:52:07,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998343625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:52:07,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:52:07,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:52:07,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375977570] [2021-11-04 03:52:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:52:07,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:52:07,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:52:07,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:52:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:52:07,605 INFO L87 Difference]: Start difference. First operand 28971 states and 43862 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:52:09,644 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 [] [2021-11-04 03:52:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:52:20,772 INFO L93 Difference]: Finished difference Result 59397 states and 89925 transitions. [2021-11-04 03:52:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:52:20,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 109 [2021-11-04 03:52:20,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:52:20,843 INFO L225 Difference]: With dead ends: 59397 [2021-11-04 03:52:20,843 INFO L226 Difference]: Without dead ends: 30441 [2021-11-04 03:52:20,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:52:20,878 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 917 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10362.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 3504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11330.52ms IncrementalHoareTripleChecker+Time [2021-11-04 03:52:20,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 85 Invalid, 3504 Unknown, 0 Unchecked, 21.62ms Time], IncrementalHoareTripleChecker [0 Valid, 3503 Invalid, 1 Unknown, 0 Unchecked, 11330.52ms Time] [2021-11-04 03:52:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30441 states. [2021-11-04 03:52:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30441 to 28971. [2021-11-04 03:52:22,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28971 states, 28224 states have (on average 1.4973072562358276) internal successors, (42260), 28250 states have internal predecessors, (42260), 480 states have call successors, (480), 264 states have call predecessors, (480), 264 states have return successors, (1098), 480 states have call predecessors, (1098), 480 states have call successors, (1098) [2021-11-04 03:52:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28971 states to 28971 states and 43838 transitions. [2021-11-04 03:52:22,629 INFO L78 Accepts]: Start accepts. Automaton has 28971 states and 43838 transitions. Word has length 109 [2021-11-04 03:52:22,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:52:22,629 INFO L470 AbstractCegarLoop]: Abstraction has 28971 states and 43838 transitions. [2021-11-04 03:52:22,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:52:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 28971 states and 43838 transitions. [2021-11-04 03:52:22,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 03:52:22,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:52:22,637 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:52:22,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-04 03:52:22,637 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)] === [2021-11-04 03:52:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:52:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1836424296, now seen corresponding path program 1 times [2021-11-04 03:52:22,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:52:22,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471109878] [2021-11-04 03:52:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:52:22,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:52:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:52:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:52:25,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:52:25,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471109878] [2021-11-04 03:52:25,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471109878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:52:25,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:52:25,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-04 03:52:25,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121829972] [2021-11-04 03:52:25,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:52:25,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-04 03:52:25,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:52:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-04 03:52:25,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-04 03:52:25,080 INFO L87 Difference]: Start difference. First operand 28971 states and 43838 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:52:27,120 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 [] [2021-11-04 03:56:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:56:15,076 INFO L93 Difference]: Finished difference Result 227176 states and 349016 transitions. [2021-11-04 03:56:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2021-11-04 03:56:15,080 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 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 110 [2021-11-04 03:56:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:56:15,784 INFO L225 Difference]: With dead ends: 227176 [2021-11-04 03:56:15,785 INFO L226 Difference]: Without dead ends: 198178 [2021-11-04 03:56:15,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11327 ImplicationChecksByTransitivity, 18925.73ms TimeCoverageRelationStatistics Valid=5032, Invalid=23698, Unknown=0, NotChecked=0, Total=28730 [2021-11-04 03:56:15,874 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 21100 mSDsluCounter, 65484 mSDsCounter, 0 mSdLazyCounter, 77793 mSolverCounterSat, 930 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182117.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21100 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 78724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 685.02ms SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 77793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193616.49ms IncrementalHoareTripleChecker+Time [2021-11-04 03:56:15,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21100 Valid, 1233 Invalid, 78724 Unknown, 0 Unchecked, 685.02ms Time], IncrementalHoareTripleChecker [930 Valid, 77793 Invalid, 1 Unknown, 0 Unchecked, 193616.49ms Time] [2021-11-04 03:56:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198178 states. [2021-11-04 03:56:20,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198178 to 48847. [2021-11-04 03:56:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48847 states, 47596 states have (on average 1.4939070510126902) internal successors, (71104), 47654 states have internal predecessors, (71104), 808 states have call successors, (808), 440 states have call predecessors, (808), 440 states have return successors, (1552), 792 states have call predecessors, (1552), 808 states have call successors, (1552) [2021-11-04 03:56:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48847 states to 48847 states and 73464 transitions. [2021-11-04 03:56:20,506 INFO L78 Accepts]: Start accepts. Automaton has 48847 states and 73464 transitions. Word has length 110 [2021-11-04 03:56:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:56:20,506 INFO L470 AbstractCegarLoop]: Abstraction has 48847 states and 73464 transitions. [2021-11-04 03:56:20,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:56:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 48847 states and 73464 transitions. [2021-11-04 03:56:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-04 03:56:20,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:56:20,520 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:56:20,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-04 03:56:20,520 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)] === [2021-11-04 03:56:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:56:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1442514238, now seen corresponding path program 1 times [2021-11-04 03:56:20,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:56:20,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931308182] [2021-11-04 03:56:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:56:20,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:56:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:56:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:56:20,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:56:20,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931308182] [2021-11-04 03:56:20,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931308182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:56:20,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:56:20,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:56:20,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738601227] [2021-11-04 03:56:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:56:20,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:56:20,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:56:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:56:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:56:20,697 INFO L87 Difference]: Start difference. First operand 48847 states and 73464 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:56:22,737 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 [] [2021-11-04 03:56:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:56:34,991 INFO L93 Difference]: Finished difference Result 97679 states and 146911 transitions. [2021-11-04 03:56:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:56:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 117 [2021-11-04 03:56:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:56:35,095 INFO L225 Difference]: With dead ends: 97679 [2021-11-04 03:56:35,095 INFO L226 Difference]: Without dead ends: 47713 [2021-11-04 03:56:35,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:56:35,146 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 1625 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 3518 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9713.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10670.78ms IncrementalHoareTripleChecker+Time [2021-11-04 03:56:35,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 100 Invalid, 3520 Unknown, 0 Unchecked, 18.77ms Time], IncrementalHoareTripleChecker [1 Valid, 3518 Invalid, 1 Unknown, 0 Unchecked, 10670.78ms Time] [2021-11-04 03:56:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47713 states. [2021-11-04 03:56:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47713 to 47389. [2021-11-04 03:56:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47389 states, 46138 states have (on average 1.4894447093502103) internal successors, (68720), 46196 states have internal predecessors, (68720), 808 states have call successors, (808), 440 states have call predecessors, (808), 440 states have return successors, (1552), 792 states have call predecessors, (1552), 808 states have call successors, (1552) [2021-11-04 03:56:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47389 states to 47389 states and 71080 transitions. [2021-11-04 03:56:38,528 INFO L78 Accepts]: Start accepts. Automaton has 47389 states and 71080 transitions. Word has length 117 [2021-11-04 03:56:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:56:38,528 INFO L470 AbstractCegarLoop]: Abstraction has 47389 states and 71080 transitions. [2021-11-04 03:56:38,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:56:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 47389 states and 71080 transitions. [2021-11-04 03:56:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-04 03:56:38,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:56:38,540 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2021-11-04 03:56:38,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-04 03:56:38,540 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)] === [2021-11-04 03:56:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:56:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1414013948, now seen corresponding path program 1 times [2021-11-04 03:56:38,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:56:38,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234887770] [2021-11-04 03:56:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:56:38,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:56:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:56:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:56:38,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:56:38,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234887770] [2021-11-04 03:56:38,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234887770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:56:38,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:56:38,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:56:38,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914915692] [2021-11-04 03:56:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:56:38,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:56:38,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:56:38,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:56:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:56:38,657 INFO L87 Difference]: Start difference. First operand 47389 states and 71080 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:56:40,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:56:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:56:49,838 INFO L93 Difference]: Finished difference Result 70337 states and 105478 transitions. [2021-11-04 03:56:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:56:49,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 117 [2021-11-04 03:56:49,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:56:49,884 INFO L225 Difference]: With dead ends: 70337 [2021-11-04 03:56:49,884 INFO L226 Difference]: Without dead ends: 22962 [2021-11-04 03:56:49,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:56:49,927 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8498.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9262.29ms IncrementalHoareTripleChecker+Time [2021-11-04 03:56:49,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 3394 Unknown, 0 Unchecked, 14.96ms Time], IncrementalHoareTripleChecker [0 Valid, 3393 Invalid, 1 Unknown, 0 Unchecked, 9262.29ms Time] [2021-11-04 03:56:49,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22962 states. [2021-11-04 03:56:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22962 to 22962. [2021-11-04 03:56:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22962 states, 22335 states have (on average 1.4879337362883367) internal successors, (33233), 22365 states have internal predecessors, (33233), 404 states have call successors, (404), 220 states have call predecessors, (404), 220 states have return successors, (776), 396 states have call predecessors, (776), 404 states have call successors, (776) [2021-11-04 03:56:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22962 states to 22962 states and 34413 transitions. [2021-11-04 03:56:51,631 INFO L78 Accepts]: Start accepts. Automaton has 22962 states and 34413 transitions. Word has length 117 [2021-11-04 03:56:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:56:51,631 INFO L470 AbstractCegarLoop]: Abstraction has 22962 states and 34413 transitions. [2021-11-04 03:56:51,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:56:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 22962 states and 34413 transitions. [2021-11-04 03:56:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 03:56:51,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:56:51,639 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:56:51,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-04 03:56:51,639 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:56:51,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:56:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash 865368095, now seen corresponding path program 1 times [2021-11-04 03:56:51,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:56:51,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413301907] [2021-11-04 03:56:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:56:51,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:56:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:56:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-04 03:56:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:56:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:56:52,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:56:52,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413301907] [2021-11-04 03:56:52,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413301907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:56:52,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:56:52,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-04 03:56:52,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041950741] [2021-11-04 03:56:52,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:56:52,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 03:56:52,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:56:52,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 03:56:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:56:52,284 INFO L87 Difference]: Start difference. First operand 22962 states and 34413 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 6 states have internal predecessors, (123), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 03:56:54,323 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 [] Killed by 15