./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--can--usb--esd_usb2.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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--can--usb--esd_usb2.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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 03:46:30,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 03:46:30,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 03:46:31,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 03:46:31,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 03:46:31,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 03:46:31,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 03:46:31,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 03:46:31,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 03:46:31,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 03:46:31,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 03:46:31,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 03:46:31,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 03:46:31,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 03:46:31,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 03:46:31,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 03:46:31,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 03:46:31,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 03:46:31,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 03:46:31,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 03:46:31,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 03:46:31,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 03:46:31,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 03:46:31,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 03:46:31,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 03:46:31,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 03:46:31,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 03:46:31,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 03:46:31,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 03:46:31,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 03:46:31,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 03:46:31,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 03:46:31,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 03:46:31,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 03:46:31,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 03:46:31,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 03:46:31,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 03:46:31,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 03:46:31,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 03:46:31,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 03:46:31,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 03:46:31,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 03:46:31,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 03:46:31,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 03:46:31,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 03:46:31,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 03:46:31,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 03:46:31,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 03:46:31,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 03:46:31,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 03:46:31,091 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 03:46:31,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 03:46:31,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 03:46:31,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 03:46:31,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 03:46:31,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 03:46:31,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 03:46:31,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 03:46:31,093 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 03:46:31,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 03:46:31,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 03:46:31,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 03:46:31,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 03:46:31,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:46:31,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 03:46:31,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 03:46:31,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 03:46:31,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 03:46:31,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 03:46:31,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 03:46:31,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 03:46:31,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 03:46:31,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 03:46:31,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2021-12-18 03:46:31,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 03:46:31,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 03:46:31,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 03:46:31,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 03:46:31,342 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 03:46:31,343 INFO L432 ainManager$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--can--usb--esd_usb2.ko-entry_point.cil.out.i [2021-12-18 03:46:31,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/321d25714/7deb59577084415c8ce4bd28ed5206ac/FLAGab1b62c5c [2021-12-18 03:46:31,977 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 03:46:31,979 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--can--usb--esd_usb2.ko-entry_point.cil.out.i [2021-12-18 03:46:32,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/321d25714/7deb59577084415c8ce4bd28ed5206ac/FLAGab1b62c5c [2021-12-18 03:46:32,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/321d25714/7deb59577084415c8ce4bd28ed5206ac [2021-12-18 03:46:32,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 03:46:32,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 03:46:32,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 03:46:32,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 03:46:32,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 03:46:32,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:46:32" (1/1) ... [2021-12-18 03:46:32,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d8ecde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:32, skipping insertion in model container [2021-12-18 03:46:32,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:46:32" (1/1) ... [2021-12-18 03:46:32,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 03:46:32,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 03:46:32,872 WARN L230 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--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2021-12-18 03:46:33,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:46:33,277 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 03:46:33,360 WARN L230 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--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2021-12-18 03:46:33,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:46:33,560 INFO L208 MainTranslator]: Completed translation [2021-12-18 03:46:33,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33 WrapperNode [2021-12-18 03:46:33,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 03:46:33,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 03:46:33,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 03:46:33,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 03:46:33,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,687 INFO L137 Inliner]: procedures = 160, calls = 847, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 2354 [2021-12-18 03:46:33,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 03:46:33,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 03:46:33,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 03:46:33,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 03:46:33,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 03:46:33,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 03:46:33,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 03:46:33,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 03:46:33,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (1/1) ... [2021-12-18 03:46:33,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:46:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:46:33,889 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) [2021-12-18 03:46:33,903 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 [2021-12-18 03:46:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-18 03:46:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-18 03:46:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2021-12-18 03:46:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2021-12-18 03:46:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_17 [2021-12-18 03:46:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_17 [2021-12-18 03:46:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-12-18 03:46:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-12-18 03:46:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-18 03:46:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-18 03:46:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 03:46:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 03:46:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 03:46:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-18 03:46:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-18 03:46:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure can_free_echo_skb [2021-12-18 03:46:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure can_free_echo_skb [2021-12-18 03:46:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-12-18 03:46:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-12-18 03:46:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-18 03:46:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-18 03:46:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 03:46:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 03:46:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 03:46:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 03:46:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 03:46:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 03:46:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-18 03:46:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-18 03:46:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-12-18 03:46:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-12-18 03:46:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 03:46:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 03:46:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-12-18 03:46:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-12-18 03:46:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 03:46:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 03:46:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 03:46:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-18 03:46:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-18 03:46:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 03:46:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 03:46:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 03:46:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 03:46:33,925 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 03:46:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 03:46:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 03:46:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-18 03:46:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-18 03:46:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2021-12-18 03:46:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2021-12-18 03:46:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 03:46:33,926 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 03:46:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 03:46:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 03:46:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 03:46:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 03:46:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 03:46:33,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:46:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:46:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-18 03:46:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-18 03:46:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-12-18 03:46:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-12-18 03:46:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 03:46:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-18 03:46:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-18 03:46:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-18 03:46:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-18 03:46:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-12-18 03:46:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-12-18 03:46:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 03:46:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 03:46:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 03:46:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 03:46:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2021-12-18 03:46:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2021-12-18 03:46:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_send_msg [2021-12-18 03:46:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_send_msg [2021-12-18 03:46:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-12-18 03:46:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-12-18 03:46:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 03:46:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 03:46:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 03:46:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 03:46:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-12-18 03:46:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-12-18 03:46:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 03:46:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 03:46:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-18 03:46:33,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-18 03:46:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-12-18 03:46:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-12-18 03:46:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 03:46:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-12-18 03:46:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-12-18 03:46:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 03:46:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 03:46:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-18 03:46:33,932 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-18 03:46:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_disconnect [2021-12-18 03:46:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_disconnect [2021-12-18 03:46:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 03:46:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 03:46:34,333 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 03:46:34,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 03:46:34,475 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 03:46:34,882 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-18 03:46:35,475 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 03:46:35,489 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 03:46:35,490 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 03:46:35,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:46:35 BoogieIcfgContainer [2021-12-18 03:46:35,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 03:46:35,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 03:46:35,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 03:46:35,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 03:46:35,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:46:32" (1/3) ... [2021-12-18 03:46:35,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aae3f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:46:35, skipping insertion in model container [2021-12-18 03:46:35,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:33" (2/3) ... [2021-12-18 03:46:35,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aae3f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:46:35, skipping insertion in model container [2021-12-18 03:46:35,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:46:35" (3/3) ... [2021-12-18 03:46:35,505 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2021-12-18 03:46:35,509 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 03:46:35,509 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 03:46:35,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 03:46:35,546 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 [2021-12-18 03:46:35,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 03:46:35,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 689 states, 501 states have (on average 1.347305389221557) internal successors, (675), 529 states have internal predecessors, (675), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-18 03:46:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-18 03:46:35,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:35,603 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:35,604 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:35,610 INFO L85 PathProgramCache]: Analyzing trace with hash -620397686, now seen corresponding path program 1 times [2021-12-18 03:46:35,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:35,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750919013] [2021-12-18 03:46:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:35,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-18 03:46:36,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:36,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750919013] [2021-12-18 03:46:36,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750919013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:36,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:36,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:46:36,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426461477] [2021-12-18 03:46:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:36,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:46:36,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:36,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:46:36,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:46:36,238 INFO L87 Difference]: Start difference. First operand has 689 states, 501 states have (on average 1.347305389221557) internal successors, (675), 529 states have internal predecessors, (675), 142 states have call successors, (142), 46 states have call predecessors, (142), 44 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-18 03:46:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:37,670 INFO L93 Difference]: Finished difference Result 2157 states and 3082 transitions. [2021-12-18 03:46:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:46:37,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 83 [2021-12-18 03:46:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:37,691 INFO L225 Difference]: With dead ends: 2157 [2021-12-18 03:46:37,691 INFO L226 Difference]: Without dead ends: 1445 [2021-12-18 03:46:37,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:46:37,703 INFO L933 BasicCegarLoop]: 1089 mSDtfsCounter, 1241 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:37,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 2306 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 03:46:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-12-18 03:46:37,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1293. [2021-12-18 03:46:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 958 states have (on average 1.3298538622129437) internal successors, (1274), 988 states have internal predecessors, (1274), 248 states have call successors, (248), 87 states have call predecessors, (248), 86 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2021-12-18 03:46:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1765 transitions. [2021-12-18 03:46:37,842 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1765 transitions. Word has length 83 [2021-12-18 03:46:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:37,842 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 1765 transitions. [2021-12-18 03:46:37,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-18 03:46:37,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1765 transitions. [2021-12-18 03:46:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-18 03:46:37,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:37,846 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:37,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 03:46:37,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1987436686, now seen corresponding path program 1 times [2021-12-18 03:46:37,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:37,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284857384] [2021-12-18 03:46:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:37,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:37,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:38,109 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-18 03:46:38,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:38,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284857384] [2021-12-18 03:46:38,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284857384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:38,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:38,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:46:38,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545590250] [2021-12-18 03:46:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:38,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:46:38,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:46:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:46:38,112 INFO L87 Difference]: Start difference. First operand 1293 states and 1765 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:39,385 INFO L93 Difference]: Finished difference Result 4132 states and 5733 transitions. [2021-12-18 03:46:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:46:39,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 93 [2021-12-18 03:46:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:39,398 INFO L225 Difference]: With dead ends: 4132 [2021-12-18 03:46:39,399 INFO L226 Difference]: Without dead ends: 2864 [2021-12-18 03:46:39,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:46:39,404 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 1128 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:39,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 2450 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 03:46:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2021-12-18 03:46:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 2550. [2021-12-18 03:46:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 1897 states have (on average 1.3299947285187137) internal successors, (2523), 1953 states have internal predecessors, (2523), 480 states have call successors, (480), 173 states have call predecessors, (480), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2021-12-18 03:46:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3488 transitions. [2021-12-18 03:46:39,538 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3488 transitions. Word has length 93 [2021-12-18 03:46:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:39,539 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 3488 transitions. [2021-12-18 03:46:39,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3488 transitions. [2021-12-18 03:46:39,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 03:46:39,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:39,546 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:39,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 03:46:39,546 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1480685779, now seen corresponding path program 1 times [2021-12-18 03:46:39,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:39,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574762475] [2021-12-18 03:46:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:39,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-18 03:46:39,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:39,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574762475] [2021-12-18 03:46:39,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574762475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:39,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:39,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:46:39,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066297158] [2021-12-18 03:46:39,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:39,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:46:39,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:39,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:46:39,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:46:39,748 INFO L87 Difference]: Start difference. First operand 2550 states and 3488 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:40,436 INFO L93 Difference]: Finished difference Result 2856 states and 3984 transitions. [2021-12-18 03:46:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:46:40,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 94 [2021-12-18 03:46:40,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:40,450 INFO L225 Difference]: With dead ends: 2856 [2021-12-18 03:46:40,451 INFO L226 Difference]: Without dead ends: 2853 [2021-12-18 03:46:40,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:46:40,457 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 1050 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:40,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 1260 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 03:46:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2021-12-18 03:46:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2549. [2021-12-18 03:46:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 1897 states have (on average 1.3294675803900897) internal successors, (2522), 1952 states have internal predecessors, (2522), 479 states have call successors, (479), 173 states have call predecessors, (479), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2021-12-18 03:46:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3486 transitions. [2021-12-18 03:46:40,550 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3486 transitions. Word has length 94 [2021-12-18 03:46:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:40,550 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3486 transitions. [2021-12-18 03:46:40,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3486 transitions. [2021-12-18 03:46:40,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-18 03:46:40,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:40,555 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:40,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 03:46:40,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1343685583, now seen corresponding path program 1 times [2021-12-18 03:46:40,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:40,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725706085] [2021-12-18 03:46:40,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:40,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-18 03:46:40,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:40,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725706085] [2021-12-18 03:46:40,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725706085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:40,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:40,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:46:40,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646547295] [2021-12-18 03:46:40,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:40,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:46:40,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:46:40,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:46:40,751 INFO L87 Difference]: Start difference. First operand 2549 states and 3486 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:41,487 INFO L93 Difference]: Finished difference Result 2855 states and 3982 transitions. [2021-12-18 03:46:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:46:41,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 95 [2021-12-18 03:46:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:41,498 INFO L225 Difference]: With dead ends: 2855 [2021-12-18 03:46:41,498 INFO L226 Difference]: Without dead ends: 2852 [2021-12-18 03:46:41,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:46:41,500 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 1036 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:41,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 1270 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 03:46:41,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-12-18 03:46:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2548. [2021-12-18 03:46:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 1897 states have (on average 1.3289404322614655) internal successors, (2521), 1951 states have internal predecessors, (2521), 478 states have call successors, (478), 173 states have call predecessors, (478), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2021-12-18 03:46:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3484 transitions. [2021-12-18 03:46:41,579 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3484 transitions. Word has length 95 [2021-12-18 03:46:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:41,579 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 3484 transitions. [2021-12-18 03:46:41,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3484 transitions. [2021-12-18 03:46:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-18 03:46:41,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:41,581 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:41,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 03:46:41,581 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1295120278, now seen corresponding path program 1 times [2021-12-18 03:46:41,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:41,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082590936] [2021-12-18 03:46:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:41,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-18 03:46:41,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082590936] [2021-12-18 03:46:41,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082590936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:41,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:41,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:46:41,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855789776] [2021-12-18 03:46:41,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:41,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:46:41,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:46:41,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:46:41,772 INFO L87 Difference]: Start difference. First operand 2548 states and 3484 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:42,485 INFO L93 Difference]: Finished difference Result 2854 states and 3980 transitions. [2021-12-18 03:46:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:46:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 96 [2021-12-18 03:46:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:42,496 INFO L225 Difference]: With dead ends: 2854 [2021-12-18 03:46:42,496 INFO L226 Difference]: Without dead ends: 2851 [2021-12-18 03:46:42,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:46:42,498 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 1032 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:42,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 1267 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 03:46:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-12-18 03:46:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2547. [2021-12-18 03:46:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1897 states have (on average 1.3284132841328413) internal successors, (2520), 1950 states have internal predecessors, (2520), 477 states have call successors, (477), 173 states have call predecessors, (477), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2021-12-18 03:46:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3482 transitions. [2021-12-18 03:46:42,584 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3482 transitions. Word has length 96 [2021-12-18 03:46:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:42,585 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3482 transitions. [2021-12-18 03:46:42,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3482 transitions. [2021-12-18 03:46:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-18 03:46:42,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:42,586 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:42,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 03:46:42,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:42,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1493728212, now seen corresponding path program 1 times [2021-12-18 03:46:42,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:42,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790078619] [2021-12-18 03:46:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:42,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-18 03:46:42,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:42,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790078619] [2021-12-18 03:46:42,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790078619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:42,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:42,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:46:42,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19232114] [2021-12-18 03:46:42,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:42,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:46:42,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:46:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:46:42,751 INFO L87 Difference]: Start difference. First operand 2547 states and 3482 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:43,442 INFO L93 Difference]: Finished difference Result 2853 states and 3978 transitions. [2021-12-18 03:46:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:46:43,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 97 [2021-12-18 03:46:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:43,454 INFO L225 Difference]: With dead ends: 2853 [2021-12-18 03:46:43,455 INFO L226 Difference]: Without dead ends: 2841 [2021-12-18 03:46:43,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:46:43,458 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 1044 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:43,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1248 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 03:46:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2021-12-18 03:46:43,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2537. [2021-12-18 03:46:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1888 states have (on average 1.3278601694915255) internal successors, (2507), 1940 states have internal predecessors, (2507), 476 states have call successors, (476), 173 states have call predecessors, (476), 172 states have return successors, (485), 471 states have call predecessors, (485), 475 states have call successors, (485) [2021-12-18 03:46:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3468 transitions. [2021-12-18 03:46:43,559 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3468 transitions. Word has length 97 [2021-12-18 03:46:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:43,559 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3468 transitions. [2021-12-18 03:46:43,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-18 03:46:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3468 transitions. [2021-12-18 03:46:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-18 03:46:43,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:43,563 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:43,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 03:46:43,563 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2031738073, now seen corresponding path program 1 times [2021-12-18 03:46:43,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:43,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148304592] [2021-12-18 03:46:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:43,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 03:46:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 03:46:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 03:46:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:46:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-18 03:46:43,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:43,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148304592] [2021-12-18 03:46:43,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148304592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:43,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:43,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:46:43,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736742087] [2021-12-18 03:46:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:43,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:46:43,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:46:43,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:46:43,729 INFO L87 Difference]: Start difference. First operand 2537 states and 3468 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:46:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:44,728 INFO L93 Difference]: Finished difference Result 6522 states and 8983 transitions. [2021-12-18 03:46:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:46:44,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 142 [2021-12-18 03:46:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:44,741 INFO L225 Difference]: With dead ends: 6522 [2021-12-18 03:46:44,742 INFO L226 Difference]: Without dead ends: 4010 [2021-12-18 03:46:44,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:46:44,748 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 1234 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:44,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 2014 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 03:46:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-12-18 03:46:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3434. [2021-12-18 03:46:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2557 states have (on average 1.315213140398905) internal successors, (3363), 2621 states have internal predecessors, (3363), 627 states have call successors, (627), 244 states have call predecessors, (627), 249 states have return successors, (654), 624 states have call predecessors, (654), 626 states have call successors, (654) [2021-12-18 03:46:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4644 transitions. [2021-12-18 03:46:44,870 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4644 transitions. Word has length 142 [2021-12-18 03:46:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:44,871 INFO L470 AbstractCegarLoop]: Abstraction has 3434 states and 4644 transitions. [2021-12-18 03:46:44,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:46:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4644 transitions. [2021-12-18 03:46:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 03:46:44,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:44,875 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 3, 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] [2021-12-18 03:46:44,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 03:46:44,876 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 622377365, now seen corresponding path program 1 times [2021-12-18 03:46:44,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:44,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586759770] [2021-12-18 03:46:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:44,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:46:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 03:46:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 03:46:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 03:46:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-12-18 03:46:45,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:45,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586759770] [2021-12-18 03:46:45,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586759770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:45,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:45,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:46:45,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838022874] [2021-12-18 03:46:45,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:45,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:46:45,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:45,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:46:45,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:46:45,067 INFO L87 Difference]: Start difference. First operand 3434 states and 4644 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 03:46:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:46,394 INFO L93 Difference]: Finished difference Result 8394 states and 11461 transitions. [2021-12-18 03:46:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:46:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2021-12-18 03:46:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:46,419 INFO L225 Difference]: With dead ends: 8394 [2021-12-18 03:46:46,419 INFO L226 Difference]: Without dead ends: 4992 [2021-12-18 03:46:46,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:46:46,428 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 833 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:46,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 2939 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 03:46:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2021-12-18 03:46:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4348. [2021-12-18 03:46:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4348 states, 3253 states have (on average 1.3098678143252382) internal successors, (4261), 3325 states have internal predecessors, (4261), 775 states have call successors, (775), 314 states have call predecessors, (775), 319 states have return successors, (802), 772 states have call predecessors, (802), 774 states have call successors, (802) [2021-12-18 03:46:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4348 states to 4348 states and 5838 transitions. [2021-12-18 03:46:46,603 INFO L78 Accepts]: Start accepts. Automaton has 4348 states and 5838 transitions. Word has length 159 [2021-12-18 03:46:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:46,603 INFO L470 AbstractCegarLoop]: Abstraction has 4348 states and 5838 transitions. [2021-12-18 03:46:46,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-18 03:46:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4348 states and 5838 transitions. [2021-12-18 03:46:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 03:46:46,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:46,608 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:46,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 03:46:46,609 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -178294056, now seen corresponding path program 1 times [2021-12-18 03:46:46,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:46,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281153294] [2021-12-18 03:46:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:46,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:46:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 03:46:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 03:46:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 03:46:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-12-18 03:46:46,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:46,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281153294] [2021-12-18 03:46:46,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281153294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:46,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:46,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:46:46,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911049997] [2021-12-18 03:46:46,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:46,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:46:46,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:46,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:46:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:46:46,817 INFO L87 Difference]: Start difference. First operand 4348 states and 5838 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 03:46:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:48,492 INFO L93 Difference]: Finished difference Result 11612 states and 15745 transitions. [2021-12-18 03:46:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:46:48,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2021-12-18 03:46:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:48,519 INFO L225 Difference]: With dead ends: 11612 [2021-12-18 03:46:48,520 INFO L226 Difference]: Without dead ends: 7296 [2021-12-18 03:46:48,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:46:48,530 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1184 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:48,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1247 Valid, 3211 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-18 03:46:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7296 states. [2021-12-18 03:46:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7296 to 6158. [2021-12-18 03:46:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 4629 states have (on average 1.3102181896737957) internal successors, (6065), 4733 states have internal predecessors, (6065), 1041 states have call successors, (1041), 476 states have call predecessors, (1041), 487 states have return successors, (1082), 1036 states have call predecessors, (1082), 1040 states have call successors, (1082) [2021-12-18 03:46:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 8188 transitions. [2021-12-18 03:46:48,756 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 8188 transitions. Word has length 173 [2021-12-18 03:46:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:48,756 INFO L470 AbstractCegarLoop]: Abstraction has 6158 states and 8188 transitions. [2021-12-18 03:46:48,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 03:46:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 8188 transitions. [2021-12-18 03:46:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-18 03:46:48,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:48,762 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:48,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 03:46:48,762 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:48,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:48,762 INFO L85 PathProgramCache]: Analyzing trace with hash 683399695, now seen corresponding path program 1 times [2021-12-18 03:46:48,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:48,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657777085] [2021-12-18 03:46:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:48,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:46:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:46:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:46:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 03:46:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 03:46:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-12-18 03:46:48,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:48,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657777085] [2021-12-18 03:46:48,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657777085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:48,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:48,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:46:48,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69295257] [2021-12-18 03:46:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:48,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:46:48,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:48,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:46:48,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:46:48,952 INFO L87 Difference]: Start difference. First operand 6158 states and 8188 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:46:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:50,691 INFO L93 Difference]: Finished difference Result 15812 states and 21847 transitions. [2021-12-18 03:46:50,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 03:46:50,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 192 [2021-12-18 03:46:50,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:50,723 INFO L225 Difference]: With dead ends: 15812 [2021-12-18 03:46:50,723 INFO L226 Difference]: Without dead ends: 9686 [2021-12-18 03:46:50,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:46:50,783 INFO L933 BasicCegarLoop]: 1222 mSDtfsCounter, 1004 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:50,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 4599 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-18 03:46:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9686 states. [2021-12-18 03:46:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9686 to 6166. [2021-12-18 03:46:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6166 states, 4637 states have (on average 1.3096829846883762) internal successors, (6073), 4741 states have internal predecessors, (6073), 1041 states have call successors, (1041), 476 states have call predecessors, (1041), 487 states have return successors, (1082), 1036 states have call predecessors, (1082), 1040 states have call successors, (1082) [2021-12-18 03:46:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6166 states to 6166 states and 8196 transitions. [2021-12-18 03:46:51,024 INFO L78 Accepts]: Start accepts. Automaton has 6166 states and 8196 transitions. Word has length 192 [2021-12-18 03:46:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:51,025 INFO L470 AbstractCegarLoop]: Abstraction has 6166 states and 8196 transitions. [2021-12-18 03:46:51,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:46:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6166 states and 8196 transitions. [2021-12-18 03:46:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-18 03:46:51,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:51,031 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:51,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 03:46:51,032 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash 321170793, now seen corresponding path program 1 times [2021-12-18 03:46:51,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:51,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861634906] [2021-12-18 03:46:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:51,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:46:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:46:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:46:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 03:46:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:46:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 03:46:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:46:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-12-18 03:46:51,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:51,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861634906] [2021-12-18 03:46:51,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861634906] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:46:51,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249184871] [2021-12-18 03:46:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:51,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:46:51,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:46:51,338 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) [2021-12-18 03:46:51,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 03:46:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:51,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:46:51,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:46:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-12-18 03:46:52,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:46:52,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249184871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:52,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:46:52,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2021-12-18 03:46:52,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129235227] [2021-12-18 03:46:52,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:52,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:46:52,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:52,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:46:52,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:46:52,089 INFO L87 Difference]: Start difference. First operand 6166 states and 8196 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 03:46:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:52,984 INFO L93 Difference]: Finished difference Result 18436 states and 24501 transitions. [2021-12-18 03:46:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 03:46:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 202 [2021-12-18 03:46:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:53,031 INFO L225 Difference]: With dead ends: 18436 [2021-12-18 03:46:53,031 INFO L226 Difference]: Without dead ends: 18428 [2021-12-18 03:46:53,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:46:53,040 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 2063 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:53,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2063 Valid, 2895 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 03:46:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18428 states. [2021-12-18 03:46:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18428 to 18394. [2021-12-18 03:46:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18394 states, 13837 states have (on average 1.3109055431090555) internal successors, (18139), 14165 states have internal predecessors, (18139), 3097 states have call successors, (3097), 1424 states have call predecessors, (3097), 1459 states have return successors, (3222), 3068 states have call predecessors, (3222), 3096 states have call successors, (3222) [2021-12-18 03:46:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18394 states to 18394 states and 24458 transitions. [2021-12-18 03:46:53,663 INFO L78 Accepts]: Start accepts. Automaton has 18394 states and 24458 transitions. Word has length 202 [2021-12-18 03:46:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:53,664 INFO L470 AbstractCegarLoop]: Abstraction has 18394 states and 24458 transitions. [2021-12-18 03:46:53,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-18 03:46:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18394 states and 24458 transitions. [2021-12-18 03:46:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-18 03:46:53,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:53,680 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:53,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 03:46:53,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-18 03:46:53,895 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -851212371, now seen corresponding path program 1 times [2021-12-18 03:46:53,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:53,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97396725] [2021-12-18 03:46:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:53,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:46:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:46:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:46:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 03:46:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:46:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 03:46:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:46:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 03:46:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2021-12-18 03:46:54,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:54,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97396725] [2021-12-18 03:46:54,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97396725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:54,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:54,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:46:54,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897053447] [2021-12-18 03:46:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:54,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:46:54,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:46:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:46:54,106 INFO L87 Difference]: Start difference. First operand 18394 states and 24458 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 03:46:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:55,736 INFO L93 Difference]: Finished difference Result 29798 states and 39985 transitions. [2021-12-18 03:46:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:46:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 212 [2021-12-18 03:46:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:55,768 INFO L225 Difference]: With dead ends: 29798 [2021-12-18 03:46:55,769 INFO L226 Difference]: Without dead ends: 10762 [2021-12-18 03:46:55,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:46:55,807 INFO L933 BasicCegarLoop]: 1099 mSDtfsCounter, 1354 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:55,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 2449 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 03:46:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2021-12-18 03:46:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 9086. [2021-12-18 03:46:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 6826 states have (on average 1.308086727219455) internal successors, (8929), 6990 states have internal predecessors, (8929), 1537 states have call successors, (1537), 705 states have call predecessors, (1537), 722 states have return successors, (1599), 1522 states have call predecessors, (1599), 1536 states have call successors, (1599) [2021-12-18 03:46:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 12065 transitions. [2021-12-18 03:46:56,198 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 12065 transitions. Word has length 212 [2021-12-18 03:46:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:56,199 INFO L470 AbstractCegarLoop]: Abstraction has 9086 states and 12065 transitions. [2021-12-18 03:46:56,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 03:46:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 12065 transitions. [2021-12-18 03:46:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-18 03:46:56,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:56,209 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:56,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 03:46:56,209 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1408938523, now seen corresponding path program 1 times [2021-12-18 03:46:56,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:56,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602607666] [2021-12-18 03:46:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:56,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:46:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:46:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:46:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 03:46:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:46:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 03:46:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:46:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-12-18 03:46:56,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602607666] [2021-12-18 03:46:56,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602607666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:56,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:56,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:46:56,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563059358] [2021-12-18 03:46:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:56,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:46:56,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:46:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:46:56,382 INFO L87 Difference]: Start difference. First operand 9086 states and 12065 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 03:46:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:46:58,609 INFO L93 Difference]: Finished difference Result 18442 states and 24876 transitions. [2021-12-18 03:46:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:46:58,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 216 [2021-12-18 03:46:58,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:46:58,638 INFO L225 Difference]: With dead ends: 18442 [2021-12-18 03:46:58,638 INFO L226 Difference]: Without dead ends: 10096 [2021-12-18 03:46:58,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:46:58,658 INFO L933 BasicCegarLoop]: 1386 mSDtfsCounter, 1211 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:46:58,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 3664 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 03:46:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10096 states. [2021-12-18 03:46:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10096 to 8460. [2021-12-18 03:46:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8460 states, 6359 states have (on average 1.3049221575719452) internal successors, (8298), 6516 states have internal predecessors, (8298), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2021-12-18 03:46:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8460 states to 8460 states and 11218 transitions. [2021-12-18 03:46:59,031 INFO L78 Accepts]: Start accepts. Automaton has 8460 states and 11218 transitions. Word has length 216 [2021-12-18 03:46:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:46:59,032 INFO L470 AbstractCegarLoop]: Abstraction has 8460 states and 11218 transitions. [2021-12-18 03:46:59,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (22), 5 states have call predecessors, (22), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 03:46:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8460 states and 11218 transitions. [2021-12-18 03:46:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-18 03:46:59,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:46:59,042 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:46:59,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 03:46:59,043 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:46:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:46:59,043 INFO L85 PathProgramCache]: Analyzing trace with hash -235484686, now seen corresponding path program 1 times [2021-12-18 03:46:59,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:46:59,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901719529] [2021-12-18 03:46:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:46:59,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:46:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:46:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:46:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:46:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:46:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:46:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:46:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:46:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:46:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:46:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:46:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:46:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:46:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:46:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:46:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:46:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 03:46:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:46:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 03:46:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:46:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:46:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 03:46:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 03:46:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:46:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:46:59,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:46:59,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901719529] [2021-12-18 03:46:59,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901719529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:46:59,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:46:59,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 03:46:59,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909915262] [2021-12-18 03:46:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:46:59,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:46:59,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:46:59,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:46:59,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:46:59,242 INFO L87 Difference]: Start difference. First operand 8460 states and 11218 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:47:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:00,389 INFO L93 Difference]: Finished difference Result 17820 states and 24007 transitions. [2021-12-18 03:47:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:47:00,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 228 [2021-12-18 03:47:00,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:00,488 INFO L225 Difference]: With dead ends: 17820 [2021-12-18 03:47:00,489 INFO L226 Difference]: Without dead ends: 10100 [2021-12-18 03:47:00,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:47:00,501 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 786 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:00,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 2444 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-18 03:47:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2021-12-18 03:47:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 8466. [2021-12-18 03:47:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8466 states, 6365 states have (on average 1.3046347211311862) internal successors, (8304), 6522 states have internal predecessors, (8304), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2021-12-18 03:47:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 11224 transitions. [2021-12-18 03:47:00,856 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 11224 transitions. Word has length 228 [2021-12-18 03:47:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:00,857 INFO L470 AbstractCegarLoop]: Abstraction has 8466 states and 11224 transitions. [2021-12-18 03:47:00,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:47:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 11224 transitions. [2021-12-18 03:47:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-18 03:47:00,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:00,867 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:00,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 03:47:00,868 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:00,868 INFO L85 PathProgramCache]: Analyzing trace with hash 32557742, now seen corresponding path program 1 times [2021-12-18 03:47:00,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:00,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992728587] [2021-12-18 03:47:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:00,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 03:47:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 03:47:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:47:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-18 03:47:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:01,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:01,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992728587] [2021-12-18 03:47:01,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992728587] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:01,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034440194] [2021-12-18 03:47:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:01,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:01,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:01,107 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) [2021-12-18 03:47:01,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 03:47:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:01,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:47:01,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-18 03:47:01,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:47:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:02,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034440194] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:47:02,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:47:02,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-18 03:47:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220517837] [2021-12-18 03:47:02,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:47:02,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 03:47:02,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 03:47:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:47:02,235 INFO L87 Difference]: Start difference. First operand 8466 states and 11224 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 03:47:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:03,439 INFO L93 Difference]: Finished difference Result 17856 states and 24055 transitions. [2021-12-18 03:47:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:47:03,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 230 [2021-12-18 03:47:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:03,467 INFO L225 Difference]: With dead ends: 17856 [2021-12-18 03:47:03,467 INFO L226 Difference]: Without dead ends: 10130 [2021-12-18 03:47:03,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-18 03:47:03,483 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 789 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:03,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 2483 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-18 03:47:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10130 states. [2021-12-18 03:47:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10130 to 8502. [2021-12-18 03:47:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8502 states, 6401 states have (on average 1.3029214185283549) internal successors, (8340), 6558 states have internal predecessors, (8340), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2021-12-18 03:47:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8502 states to 8502 states and 11260 transitions. [2021-12-18 03:47:03,788 INFO L78 Accepts]: Start accepts. Automaton has 8502 states and 11260 transitions. Word has length 230 [2021-12-18 03:47:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:03,789 INFO L470 AbstractCegarLoop]: Abstraction has 8502 states and 11260 transitions. [2021-12-18 03:47:03,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 03:47:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8502 states and 11260 transitions. [2021-12-18 03:47:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-18 03:47:03,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:03,802 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:03,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:04,015 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,SelfDestructingSolverStorable14 [2021-12-18 03:47:04,016 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:04,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash 240014050, now seen corresponding path program 2 times [2021-12-18 03:47:04,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:04,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110245050] [2021-12-18 03:47:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:04,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 03:47:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 03:47:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 03:47:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 03:47:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:04,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110245050] [2021-12-18 03:47:04,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110245050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:04,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264965930] [2021-12-18 03:47:04,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:47:04,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:04,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:04,246 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) [2021-12-18 03:47:04,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 03:47:04,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 03:47:04,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:47:04,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 03:47:04,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-18 03:47:04,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:47:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:05,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264965930] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:47:05,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:47:05,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-12-18 03:47:05,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554854211] [2021-12-18 03:47:05,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:47:05,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 03:47:05,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 03:47:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-12-18 03:47:05,351 INFO L87 Difference]: Start difference. First operand 8502 states and 11260 transitions. Second operand has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 03:47:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:06,970 INFO L93 Difference]: Finished difference Result 17964 states and 24181 transitions. [2021-12-18 03:47:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 03:47:06,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 236 [2021-12-18 03:47:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:06,998 INFO L225 Difference]: With dead ends: 17964 [2021-12-18 03:47:06,998 INFO L226 Difference]: Without dead ends: 10202 [2021-12-18 03:47:07,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-12-18 03:47:07,014 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 514 mSDsluCounter, 4045 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:07,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 4899 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 03:47:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2021-12-18 03:47:07,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 8574. [2021-12-18 03:47:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8574 states, 6473 states have (on average 1.2995519851691641) internal successors, (8412), 6630 states have internal predecessors, (8412), 1429 states have call successors, (1429), 654 states have call predecessors, (1429), 671 states have return successors, (1491), 1415 states have call predecessors, (1491), 1428 states have call successors, (1491) [2021-12-18 03:47:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8574 states to 8574 states and 11332 transitions. [2021-12-18 03:47:07,326 INFO L78 Accepts]: Start accepts. Automaton has 8574 states and 11332 transitions. Word has length 236 [2021-12-18 03:47:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:07,326 INFO L470 AbstractCegarLoop]: Abstraction has 8574 states and 11332 transitions. [2021-12-18 03:47:07,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 13 states have internal predecessors, (177), 2 states have call successors, (52), 6 states have call predecessors, (52), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-18 03:47:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 8574 states and 11332 transitions. [2021-12-18 03:47:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-18 03:47:07,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:07,336 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:07,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:07,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:07,559 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:07,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash -275437077, now seen corresponding path program 1 times [2021-12-18 03:47:07,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374995710] [2021-12-18 03:47:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:07,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 03:47:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:47:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:47:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:47:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 03:47:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 03:47:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 03:47:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:47:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:47:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:47:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 03:47:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 03:47:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-12-18 03:47:07,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:07,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374995710] [2021-12-18 03:47:07,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374995710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:47:07,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:47:07,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:47:07,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266814586] [2021-12-18 03:47:07,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:47:07,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:47:07,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:47:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:47:07,743 INFO L87 Difference]: Start difference. First operand 8574 states and 11332 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 03:47:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:11,690 INFO L93 Difference]: Finished difference Result 29510 states and 41127 transitions. [2021-12-18 03:47:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 03:47:11,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 238 [2021-12-18 03:47:11,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:11,755 INFO L225 Difference]: With dead ends: 29510 [2021-12-18 03:47:11,756 INFO L226 Difference]: Without dead ends: 20972 [2021-12-18 03:47:11,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-12-18 03:47:11,780 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 2682 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 1344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1344 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:11,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2801 Valid, 3962 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1344 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-18 03:47:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20972 states. [2021-12-18 03:47:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20972 to 12685. [2021-12-18 03:47:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12685 states, 9668 states have (on average 1.3058543649151841) internal successors, (12625), 9905 states have internal predecessors, (12625), 2013 states have call successors, (2013), 974 states have call predecessors, (2013), 1003 states have return successors, (2109), 1995 states have call predecessors, (2109), 2012 states have call successors, (2109) [2021-12-18 03:47:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12685 states to 12685 states and 16747 transitions. [2021-12-18 03:47:12,567 INFO L78 Accepts]: Start accepts. Automaton has 12685 states and 16747 transitions. Word has length 238 [2021-12-18 03:47:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:12,567 INFO L470 AbstractCegarLoop]: Abstraction has 12685 states and 16747 transitions. [2021-12-18 03:47:12,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 03:47:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12685 states and 16747 transitions. [2021-12-18 03:47:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-18 03:47:12,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:12,580 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:12,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 03:47:12,580 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash -473466073, now seen corresponding path program 2 times [2021-12-18 03:47:12,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:12,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100880261] [2021-12-18 03:47:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:12,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 03:47:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 03:47:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 03:47:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 03:47:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 03:47:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:47:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:47:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:47:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 03:47:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 03:47:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-12-18 03:47:12,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:12,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100880261] [2021-12-18 03:47:12,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100880261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:47:12,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:47:12,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:47:12,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899983245] [2021-12-18 03:47:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:47:12,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:47:12,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:47:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:47:12,793 INFO L87 Difference]: Start difference. First operand 12685 states and 16747 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 03:47:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:16,598 INFO L93 Difference]: Finished difference Result 36653 states and 50874 transitions. [2021-12-18 03:47:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 03:47:16,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 238 [2021-12-18 03:47:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:16,669 INFO L225 Difference]: With dead ends: 36653 [2021-12-18 03:47:16,669 INFO L226 Difference]: Without dead ends: 24004 [2021-12-18 03:47:16,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-12-18 03:47:16,699 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 2021 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 1212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 3861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1212 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:16,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2141 Valid, 3994 Invalid, 3861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1212 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-18 03:47:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24004 states. [2021-12-18 03:47:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24004 to 16178. [2021-12-18 03:47:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16178 states, 12398 states have (on average 1.3077915792869819) internal successors, (16214), 12705 states have internal predecessors, (16214), 2478 states have call successors, (2478), 1260 states have call predecessors, (2478), 1301 states have return successors, (2608), 2461 states have call predecessors, (2608), 2477 states have call successors, (2608) [2021-12-18 03:47:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16178 states to 16178 states and 21300 transitions. [2021-12-18 03:47:17,505 INFO L78 Accepts]: Start accepts. Automaton has 16178 states and 21300 transitions. Word has length 238 [2021-12-18 03:47:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:17,506 INFO L470 AbstractCegarLoop]: Abstraction has 16178 states and 21300 transitions. [2021-12-18 03:47:17,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 03:47:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 16178 states and 21300 transitions. [2021-12-18 03:47:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-18 03:47:17,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:17,516 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:17,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 03:47:17,517 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:17,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1623731646, now seen corresponding path program 1 times [2021-12-18 03:47:17,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:17,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111151676] [2021-12-18 03:47:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:17,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:47:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 03:47:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:47:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 03:47:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:47:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 03:47:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 03:47:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-12-18 03:47:17,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:17,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111151676] [2021-12-18 03:47:17,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111151676] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:17,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206699977] [2021-12-18 03:47:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:17,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:17,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:47:17,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 03:47:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:18,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 03:47:18,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-12-18 03:47:18,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:47:18,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206699977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:47:18,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:47:18,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-18 03:47:18,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676473820] [2021-12-18 03:47:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:47:18,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:47:18,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:47:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:47:18,492 INFO L87 Difference]: Start difference. First operand 16178 states and 21300 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:47:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:19,507 INFO L93 Difference]: Finished difference Result 43148 states and 57179 transitions. [2021-12-18 03:47:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:47:19,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 244 [2021-12-18 03:47:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:19,571 INFO L225 Difference]: With dead ends: 43148 [2021-12-18 03:47:19,571 INFO L226 Difference]: Without dead ends: 27347 [2021-12-18 03:47:19,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:47:19,595 INFO L933 BasicCegarLoop]: 1576 mSDtfsCounter, 1006 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:19,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 4038 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:47:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27347 states. [2021-12-18 03:47:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27347 to 20157. [2021-12-18 03:47:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20157 states, 15491 states have (on average 1.307146084823446) internal successors, (20249), 15865 states have internal predecessors, (20249), 3055 states have call successors, (3055), 1560 states have call predecessors, (3055), 1610 states have return successors, (3213), 3027 states have call predecessors, (3213), 3054 states have call successors, (3213) [2021-12-18 03:47:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20157 states to 20157 states and 26517 transitions. [2021-12-18 03:47:20,344 INFO L78 Accepts]: Start accepts. Automaton has 20157 states and 26517 transitions. Word has length 244 [2021-12-18 03:47:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:20,344 INFO L470 AbstractCegarLoop]: Abstraction has 20157 states and 26517 transitions. [2021-12-18 03:47:20,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:47:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 20157 states and 26517 transitions. [2021-12-18 03:47:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-18 03:47:20,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:20,355 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:20,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:20,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:20,572 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash 639155786, now seen corresponding path program 3 times [2021-12-18 03:47:20,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47954466] [2021-12-18 03:47:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:20,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 03:47:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 03:47:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 03:47:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 03:47:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 03:47:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:20,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:20,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47954466] [2021-12-18 03:47:20,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47954466] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:20,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156951127] [2021-12-18 03:47:20,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 03:47:20,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:20,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:20,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:47:20,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 03:47:21,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 03:47:21,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:47:21,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 03:47:21,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-12-18 03:47:21,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:47:21,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156951127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:47:21,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:47:21,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2021-12-18 03:47:21,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053576384] [2021-12-18 03:47:21,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:47:21,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:47:21,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:21,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:47:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-12-18 03:47:21,858 INFO L87 Difference]: Start difference. First operand 20157 states and 26517 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 03:47:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:22,727 INFO L93 Difference]: Finished difference Result 40125 states and 52917 transitions. [2021-12-18 03:47:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:47:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 248 [2021-12-18 03:47:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:22,787 INFO L225 Difference]: With dead ends: 40125 [2021-12-18 03:47:22,787 INFO L226 Difference]: Without dead ends: 20345 [2021-12-18 03:47:22,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-12-18 03:47:22,823 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 868 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 5812 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:22,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 5812 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:47:22,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20345 states. [2021-12-18 03:47:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20345 to 20276. [2021-12-18 03:47:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20276 states, 15576 states have (on average 1.3054699537750385) internal successors, (20334), 15950 states have internal predecessors, (20334), 3072 states have call successors, (3072), 1560 states have call predecessors, (3072), 1627 states have return successors, (3331), 3061 states have call predecessors, (3331), 3071 states have call successors, (3331) [2021-12-18 03:47:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20276 states to 20276 states and 26737 transitions. [2021-12-18 03:47:23,687 INFO L78 Accepts]: Start accepts. Automaton has 20276 states and 26737 transitions. Word has length 248 [2021-12-18 03:47:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:23,688 INFO L470 AbstractCegarLoop]: Abstraction has 20276 states and 26737 transitions. [2021-12-18 03:47:23,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-18 03:47:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 20276 states and 26737 transitions. [2021-12-18 03:47:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-12-18 03:47:23,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:23,698 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 10, 10, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:23,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:23,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:23,898 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:23,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash -942027534, now seen corresponding path program 1 times [2021-12-18 03:47:23,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:23,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050033611] [2021-12-18 03:47:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:23,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 03:47:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 03:47:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:47:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-18 03:47:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 03:47:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:24,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:24,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050033611] [2021-12-18 03:47:24,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050033611] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:24,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632736766] [2021-12-18 03:47:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:24,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:24,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:24,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:47:24,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 03:47:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:24,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 03:47:24,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 42 proven. 100 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-18 03:47:24,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:47:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:25,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632736766] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:47:25,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:47:25,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 29 [2021-12-18 03:47:25,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539993143] [2021-12-18 03:47:25,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:47:25,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-18 03:47:25,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-18 03:47:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=499, Unknown=0, NotChecked=0, Total=812 [2021-12-18 03:47:25,417 INFO L87 Difference]: Start difference. First operand 20276 states and 26737 transitions. Second operand has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 03:47:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:27,719 INFO L93 Difference]: Finished difference Result 44820 states and 59996 transitions. [2021-12-18 03:47:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 03:47:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 254 [2021-12-18 03:47:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:27,794 INFO L225 Difference]: With dead ends: 44820 [2021-12-18 03:47:27,794 INFO L226 Difference]: Without dead ends: 24921 [2021-12-18 03:47:27,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=319, Invalid=551, Unknown=0, NotChecked=0, Total=870 [2021-12-18 03:47:27,827 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 779 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 5757 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:27,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 5757 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-18 03:47:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24921 states. [2021-12-18 03:47:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24921 to 20756. [2021-12-18 03:47:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20756 states, 16056 states have (on average 1.296337817638266) internal successors, (20814), 16430 states have internal predecessors, (20814), 3072 states have call successors, (3072), 1560 states have call predecessors, (3072), 1627 states have return successors, (3331), 3061 states have call predecessors, (3331), 3071 states have call successors, (3331) [2021-12-18 03:47:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20756 states to 20756 states and 27217 transitions. [2021-12-18 03:47:28,685 INFO L78 Accepts]: Start accepts. Automaton has 20756 states and 27217 transitions. Word has length 254 [2021-12-18 03:47:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:28,685 INFO L470 AbstractCegarLoop]: Abstraction has 20756 states and 27217 transitions. [2021-12-18 03:47:28,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.241379310344827) internal successors, (210), 25 states have internal predecessors, (210), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 03:47:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 20756 states and 27217 transitions. [2021-12-18 03:47:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-18 03:47:28,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:28,699 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:28,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:28,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:28,899 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash -43587285, now seen corresponding path program 1 times [2021-12-18 03:47:28,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:28,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685971596] [2021-12-18 03:47:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:28,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:47:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 03:47:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 03:47:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 03:47:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 03:47:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 03:47:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:47:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 03:47:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-18 03:47:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-18 03:47:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-12-18 03:47:29,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685971596] [2021-12-18 03:47:29,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685971596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:47:29,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:47:29,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 03:47:29,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058710430] [2021-12-18 03:47:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:47:29,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 03:47:29,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 03:47:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:47:29,148 INFO L87 Difference]: Start difference. First operand 20756 states and 27217 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 03:47:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:33,060 INFO L93 Difference]: Finished difference Result 58947 states and 78947 transitions. [2021-12-18 03:47:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 03:47:33,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 277 [2021-12-18 03:47:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:33,162 INFO L225 Difference]: With dead ends: 58947 [2021-12-18 03:47:33,162 INFO L226 Difference]: Without dead ends: 38568 [2021-12-18 03:47:33,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-12-18 03:47:33,202 INFO L933 BasicCegarLoop]: 1480 mSDtfsCounter, 2398 mSDsluCounter, 6436 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 7916 SdHoareTripleChecker+Invalid, 4405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:33,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2442 Valid, 7916 Invalid, 4405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 3400 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-18 03:47:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38568 states. [2021-12-18 03:47:34,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38568 to 20886. [2021-12-18 03:47:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20886 states, 16152 states have (on average 1.2958147597820704) internal successors, (20930), 16532 states have internal predecessors, (20930), 3106 states have call successors, (3106), 1560 states have call predecessors, (3106), 1627 states have return successors, (3365), 3089 states have call predecessors, (3365), 3105 states have call successors, (3365) [2021-12-18 03:47:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20886 states to 20886 states and 27401 transitions. [2021-12-18 03:47:34,279 INFO L78 Accepts]: Start accepts. Automaton has 20886 states and 27401 transitions. Word has length 277 [2021-12-18 03:47:34,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:34,279 INFO L470 AbstractCegarLoop]: Abstraction has 20886 states and 27401 transitions. [2021-12-18 03:47:34,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 7 states have internal predecessors, (137), 4 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 03:47:34,279 INFO L276 IsEmpty]: Start isEmpty. Operand 20886 states and 27401 transitions. [2021-12-18 03:47:34,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-18 03:47:34,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:34,289 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:34,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 03:47:34,289 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:34,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1446661182, now seen corresponding path program 2 times [2021-12-18 03:47:34,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:34,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498706622] [2021-12-18 03:47:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:34,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 03:47:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 03:47:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:47:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 03:47:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-18 03:47:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:34,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:34,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498706622] [2021-12-18 03:47:34,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498706622] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:34,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117709353] [2021-12-18 03:47:34,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:47:34,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:34,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:34,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:47:34,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 03:47:35,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 03:47:35,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:47:35,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 03:47:35,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 42 proven. 484 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-18 03:47:35,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:47:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:36,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117709353] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:47:36,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:47:36,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 53 [2021-12-18 03:47:36,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448047404] [2021-12-18 03:47:36,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:47:36,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-18 03:47:36,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:36,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-18 03:47:36,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1567, Unknown=0, NotChecked=0, Total=2756 [2021-12-18 03:47:36,570 INFO L87 Difference]: Start difference. First operand 20886 states and 27401 transitions. Second operand has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 03:47:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:39,037 INFO L93 Difference]: Finished difference Result 46520 states and 62044 transitions. [2021-12-18 03:47:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-18 03:47:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 278 [2021-12-18 03:47:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:39,108 INFO L225 Difference]: With dead ends: 46520 [2021-12-18 03:47:39,108 INFO L226 Difference]: Without dead ends: 26011 [2021-12-18 03:47:39,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1195, Invalid=1667, Unknown=0, NotChecked=0, Total=2862 [2021-12-18 03:47:39,146 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 611 mSDsluCounter, 3881 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 4729 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:39,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 4729 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 03:47:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26011 states. [2021-12-18 03:47:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26011 to 21846. [2021-12-18 03:47:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21846 states, 17112 states have (on average 1.2792192613370734) internal successors, (21890), 17492 states have internal predecessors, (21890), 3106 states have call successors, (3106), 1560 states have call predecessors, (3106), 1627 states have return successors, (3365), 3089 states have call predecessors, (3365), 3105 states have call successors, (3365) [2021-12-18 03:47:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21846 states to 21846 states and 28361 transitions. [2021-12-18 03:47:40,201 INFO L78 Accepts]: Start accepts. Automaton has 21846 states and 28361 transitions. Word has length 278 [2021-12-18 03:47:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:40,202 INFO L470 AbstractCegarLoop]: Abstraction has 21846 states and 28361 transitions. [2021-12-18 03:47:40,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.867924528301887) internal successors, (258), 49 states have internal predecessors, (258), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-12-18 03:47:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 21846 states and 28361 transitions. [2021-12-18 03:47:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-18 03:47:40,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:40,212 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:40,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:40,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:40,414 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:40,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2026688158, now seen corresponding path program 3 times [2021-12-18 03:47:40,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:40,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119916456] [2021-12-18 03:47:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:40,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-18 03:47:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 03:47:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:47:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-18 03:47:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-18 03:47:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:41,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119916456] [2021-12-18 03:47:41,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119916456] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795282451] [2021-12-18 03:47:41,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 03:47:41,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:41,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:41,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:47:41,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 03:47:41,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 03:47:41,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:47:41,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-18 03:47:41,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked. [2021-12-18 03:47:42,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:47:42,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795282451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:47:42,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:47:42,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [53] total 63 [2021-12-18 03:47:42,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138642432] [2021-12-18 03:47:42,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:47:42,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 03:47:42,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 03:47:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1214, Invalid=2692, Unknown=0, NotChecked=0, Total=3906 [2021-12-18 03:47:42,663 INFO L87 Difference]: Start difference. First operand 21846 states and 28361 transitions. Second operand has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 10 states have internal predecessors, (134), 5 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 03:47:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:46,593 INFO L93 Difference]: Finished difference Result 65968 states and 87060 transitions. [2021-12-18 03:47:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 03:47:46,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 10 states have internal predecessors, (134), 5 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) Word has length 326 [2021-12-18 03:47:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:46,705 INFO L225 Difference]: With dead ends: 65968 [2021-12-18 03:47:46,705 INFO L226 Difference]: Without dead ends: 44484 [2021-12-18 03:47:46,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1310, Invalid=4852, Unknown=0, NotChecked=0, Total=6162 [2021-12-18 03:47:46,750 INFO L933 BasicCegarLoop]: 1493 mSDtfsCounter, 2864 mSDsluCounter, 10519 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 12012 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:46,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2879 Valid, 12012 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-18 03:47:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44484 states. [2021-12-18 03:47:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44484 to 23788. [2021-12-18 03:47:48,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23788 states, 18797 states have (on average 1.2692450923019631) internal successors, (23858), 19167 states have internal predecessors, (23858), 3268 states have call successors, (3268), 1646 states have call predecessors, (3268), 1722 states have return successors, (3545), 3271 states have call predecessors, (3545), 3267 states have call successors, (3545) [2021-12-18 03:47:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23788 states to 23788 states and 30671 transitions. [2021-12-18 03:47:48,230 INFO L78 Accepts]: Start accepts. Automaton has 23788 states and 30671 transitions. Word has length 326 [2021-12-18 03:47:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:48,230 INFO L470 AbstractCegarLoop]: Abstraction has 23788 states and 30671 transitions. [2021-12-18 03:47:48,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 10 states have internal predecessors, (134), 5 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (25), 6 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-18 03:47:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 23788 states and 30671 transitions. [2021-12-18 03:47:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-12-18 03:47:48,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:48,243 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:48,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:48,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-18 03:47:48,447 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1430259438, now seen corresponding path program 1 times [2021-12-18 03:47:48,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:48,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493534221] [2021-12-18 03:47:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:48,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-18 03:47:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-18 03:47:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:47:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-18 03:47:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-18 03:47:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-18 03:47:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-12-18 03:47:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-12-18 03:47:49,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493534221] [2021-12-18 03:47:49,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493534221] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:49,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981143761] [2021-12-18 03:47:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:49,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:49,532 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:47:49,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 03:47:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:50,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-18 03:47:50,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 46 proven. 2116 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-18 03:47:50,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:47:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2499 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-12-18 03:47:51,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981143761] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:47:51,533 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:47:51,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 72 [2021-12-18 03:47:51,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657544441] [2021-12-18 03:47:51,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:47:51,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-12-18 03:47:51,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-12-18 03:47:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2227, Invalid=2885, Unknown=0, NotChecked=0, Total=5112 [2021-12-18 03:47:51,539 INFO L87 Difference]: Start difference. First operand 23788 states and 30671 transitions. Second operand has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-18 03:47:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:47:55,080 INFO L93 Difference]: Finished difference Result 51732 states and 67619 transitions. [2021-12-18 03:47:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-12-18 03:47:55,080 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 346 [2021-12-18 03:47:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:47:55,163 INFO L225 Difference]: With dead ends: 51732 [2021-12-18 03:47:55,163 INFO L226 Difference]: Without dead ends: 28321 [2021-12-18 03:47:55,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2234, Invalid=3022, Unknown=0, NotChecked=0, Total=5256 [2021-12-18 03:47:55,209 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 959 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 5414 SdHoareTripleChecker+Invalid, 4226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 03:47:55,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 5414 Invalid, 4226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-18 03:47:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28321 states. [2021-12-18 03:47:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28321 to 24724. [2021-12-18 03:47:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24724 states, 19733 states have (on average 1.2564739269244414) internal successors, (24794), 20103 states have internal predecessors, (24794), 3268 states have call successors, (3268), 1646 states have call predecessors, (3268), 1722 states have return successors, (3545), 3271 states have call predecessors, (3545), 3267 states have call successors, (3545) [2021-12-18 03:47:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24724 states to 24724 states and 31607 transitions. [2021-12-18 03:47:56,619 INFO L78 Accepts]: Start accepts. Automaton has 24724 states and 31607 transitions. Word has length 346 [2021-12-18 03:47:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:47:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 24724 states and 31607 transitions. [2021-12-18 03:47:56,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.388888888888889) internal successors, (316), 67 states have internal predecessors, (316), 2 states have call successors, (63), 7 states have call predecessors, (63), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-18 03:47:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 24724 states and 31607 transitions. [2021-12-18 03:47:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-12-18 03:47:56,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:47:56,634 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:47:56,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 03:47:56,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-18 03:47:56,847 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:47:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:47:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 643420966, now seen corresponding path program 2 times [2021-12-18 03:47:56,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:47:56,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332231719] [2021-12-18 03:47:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:47:56,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:47:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:47:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:47:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:47:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:47:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:47:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:47:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:47:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:47:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:47:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:47:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:47:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:47:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:47:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:47:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-18 03:47:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:47:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-18 03:47:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:47:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:47:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 03:47:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:47:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-18 03:47:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-18 03:47:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 03:47:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:47:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 4437 trivial. 0 not checked. [2021-12-18 03:47:57,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:47:57,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332231719] [2021-12-18 03:47:57,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332231719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:47:57,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678325246] [2021-12-18 03:47:57,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:47:57,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:47:57,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:47:57,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:47:57,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 03:47:59,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 03:47:59,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:47:59,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-18 03:47:59,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:47:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 4433 trivial. 0 not checked. [2021-12-18 03:47:59,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:47:59,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678325246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:47:59,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:47:59,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 13 [2021-12-18 03:47:59,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428917146] [2021-12-18 03:47:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:47:59,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:47:59,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:47:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:47:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:47:59,749 INFO L87 Difference]: Start difference. First operand 24724 states and 31607 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 03:48:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:48:01,116 INFO L93 Difference]: Finished difference Result 52724 states and 68154 transitions. [2021-12-18 03:48:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:48:01,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 382 [2021-12-18 03:48:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:48:01,187 INFO L225 Difference]: With dead ends: 52724 [2021-12-18 03:48:01,187 INFO L226 Difference]: Without dead ends: 28377 [2021-12-18 03:48:01,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 433 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:48:01,221 INFO L933 BasicCegarLoop]: 1117 mSDtfsCounter, 172 mSDsluCounter, 6501 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 7618 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:48:01,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 7618 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:48:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28377 states. [2021-12-18 03:48:02,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28377 to 24876. [2021-12-18 03:48:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24876 states, 19859 states have (on average 1.2548466690165667) internal successors, (24920), 20205 states have internal predecessors, (24920), 3268 states have call successors, (3268), 1646 states have call predecessors, (3268), 1748 states have return successors, (3599), 3321 states have call predecessors, (3599), 3267 states have call successors, (3599) [2021-12-18 03:48:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24876 states to 24876 states and 31787 transitions. [2021-12-18 03:48:02,459 INFO L78 Accepts]: Start accepts. Automaton has 24876 states and 31787 transitions. Word has length 382 [2021-12-18 03:48:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:48:02,459 INFO L470 AbstractCegarLoop]: Abstraction has 24876 states and 31787 transitions. [2021-12-18 03:48:02,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-18 03:48:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 24876 states and 31787 transitions. [2021-12-18 03:48:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-18 03:48:02,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:48:02,472 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:48:02,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 03:48:02,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-18 03:48:02,673 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:48:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:48:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash -542268994, now seen corresponding path program 3 times [2021-12-18 03:48:02,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:48:02,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78474154] [2021-12-18 03:48:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:48:02,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:48:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:48:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:48:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:48:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:48:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:48:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:48:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:48:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:48:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:48:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:48:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:48:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:48:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:48:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:48:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:48:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:48:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 03:48:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:48:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-18 03:48:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-12-18 03:48:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-18 03:48:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-18 03:48:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 4441 trivial. 0 not checked. [2021-12-18 03:48:03,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:48:03,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78474154] [2021-12-18 03:48:03,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78474154] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:48:03,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234994952] [2021-12-18 03:48:03,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 03:48:03,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:48:03,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:48:03,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:48:03,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 03:48:04,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-18 03:48:04,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 03:48:04,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-18 03:48:04,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:48:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 4435 trivial. 0 not checked. [2021-12-18 03:48:07,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:48:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4447 trivial. 0 not checked. [2021-12-18 03:48:08,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234994952] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-18 03:48:08,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-18 03:48:08,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20, 16] total 33 [2021-12-18 03:48:08,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443566433] [2021-12-18 03:48:08,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:48:08,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 03:48:08,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:48:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 03:48:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 03:48:08,377 INFO L87 Difference]: Start difference. First operand 24876 states and 31787 transitions. Second operand has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 03:48:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:48:13,386 INFO L93 Difference]: Finished difference Result 60683 states and 77701 transitions. [2021-12-18 03:48:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 03:48:13,386 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 388 [2021-12-18 03:48:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:48:13,472 INFO L225 Difference]: With dead ends: 60683 [2021-12-18 03:48:13,472 INFO L226 Difference]: Without dead ends: 36179 [2021-12-18 03:48:13,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 808 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2021-12-18 03:48:13,517 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 4853 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 3501 mSolverCounterSat, 1667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4899 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 5168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1667 IncrementalHoareTripleChecker+Valid, 3501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:48:13,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4899 Valid, 3627 Invalid, 5168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1667 Valid, 3501 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 03:48:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36179 states. [2021-12-18 03:48:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36179 to 35749. [2021-12-18 03:48:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35749 states, 28457 states have (on average 1.257581614365534) internal successors, (35787), 28974 states have internal predecessors, (35787), 4764 states have call successors, (4764), 2398 states have call predecessors, (4764), 2527 states have return successors, (5233), 4819 states have call predecessors, (5233), 4763 states have call successors, (5233) [2021-12-18 03:48:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35749 states to 35749 states and 45784 transitions. [2021-12-18 03:48:15,466 INFO L78 Accepts]: Start accepts. Automaton has 35749 states and 45784 transitions. Word has length 388 [2021-12-18 03:48:15,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:48:15,467 INFO L470 AbstractCegarLoop]: Abstraction has 35749 states and 45784 transitions. [2021-12-18 03:48:15,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.4) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-12-18 03:48:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 35749 states and 45784 transitions. [2021-12-18 03:48:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-12-18 03:48:15,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:48:15,489 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:48:15,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 03:48:15,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-18 03:48:15,702 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:48:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:48:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash -807064712, now seen corresponding path program 1 times [2021-12-18 03:48:15,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:48:15,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118291799] [2021-12-18 03:48:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:48:15,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:48:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:48:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:48:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:48:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:48:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:48:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:48:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:48:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:48:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:48:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:48:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:48:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:48:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:48:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:48:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:48:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:48:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-18 03:48:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-18 03:48:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-18 03:48:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-18 03:48:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-18 03:48:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:48:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:48:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2021-12-18 03:48:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-12-18 03:48:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2021-12-18 03:48:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 4499 trivial. 0 not checked. [2021-12-18 03:48:16,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:48:16,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118291799] [2021-12-18 03:48:16,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118291799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:48:16,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:48:16,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 03:48:16,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130165330] [2021-12-18 03:48:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:48:16,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 03:48:16,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:48:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 03:48:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-18 03:48:16,067 INFO L87 Difference]: Start difference. First operand 35749 states and 45784 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-18 03:48:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:48:21,176 INFO L93 Difference]: Finished difference Result 94540 states and 124303 transitions. [2021-12-18 03:48:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 03:48:21,177 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 428 [2021-12-18 03:48:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:48:21,359 INFO L225 Difference]: With dead ends: 94540 [2021-12-18 03:48:21,360 INFO L226 Difference]: Without dead ends: 59168 [2021-12-18 03:48:21,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-12-18 03:48:21,439 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 2304 mSDsluCounter, 6700 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 1078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 8292 SdHoareTripleChecker+Invalid, 4629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1078 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:48:21,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2364 Valid, 8292 Invalid, 4629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1078 Valid, 3551 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-18 03:48:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59168 states. [2021-12-18 03:48:23,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59168 to 35701. [2021-12-18 03:48:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35701 states, 28433 states have (on average 1.2577990363310239) internal successors, (35763), 28950 states have internal predecessors, (35763), 4740 states have call successors, (4740), 2398 states have call predecessors, (4740), 2527 states have return successors, (5209), 4795 states have call predecessors, (5209), 4739 states have call successors, (5209) [2021-12-18 03:48:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35701 states to 35701 states and 45712 transitions. [2021-12-18 03:48:24,067 INFO L78 Accepts]: Start accepts. Automaton has 35701 states and 45712 transitions. Word has length 428 [2021-12-18 03:48:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:48:24,068 INFO L470 AbstractCegarLoop]: Abstraction has 35701 states and 45712 transitions. [2021-12-18 03:48:24,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-18 03:48:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 35701 states and 45712 transitions. [2021-12-18 03:48:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-12-18 03:48:24,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:48:24,092 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:48:24,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-18 03:48:24,093 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:48:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:48:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1571151579, now seen corresponding path program 1 times [2021-12-18 03:48:24,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:48:24,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350295813] [2021-12-18 03:48:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:48:24,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:48:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:48:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:48:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:48:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:48:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:48:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:48:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:48:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:48:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:48:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:48:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:48:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:48:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:48:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:48:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:48:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:48:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 03:48:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 03:48:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 03:48:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 03:48:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-18 03:48:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:48:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 03:48:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:48:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 03:48:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-18 03:48:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2021-12-18 03:48:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 4494 trivial. 0 not checked. [2021-12-18 03:48:24,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:48:24,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350295813] [2021-12-18 03:48:24,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350295813] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:48:24,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071316748] [2021-12-18 03:48:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:48:24,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:48:24,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:48:24,764 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:48:24,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 03:48:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:26,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 3530 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-18 03:48:26,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:48:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4580 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 4473 trivial. 0 not checked. [2021-12-18 03:48:26,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:48:26,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071316748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:48:26,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:48:26,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 21 [2021-12-18 03:48:26,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123856220] [2021-12-18 03:48:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:48:26,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 03:48:26,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:48:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 03:48:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-12-18 03:48:26,675 INFO L87 Difference]: Start difference. First operand 35701 states and 45712 transitions. Second operand has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 11 states have internal predecessors, (171), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 6 states have call predecessors, (34), 4 states have call successors, (34) [2021-12-18 03:48:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:48:32,546 INFO L93 Difference]: Finished difference Result 106036 states and 138488 transitions. [2021-12-18 03:48:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 03:48:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 11 states have internal predecessors, (171), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 6 states have call predecessors, (34), 4 states have call successors, (34) Word has length 437 [2021-12-18 03:48:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:48:32,730 INFO L225 Difference]: With dead ends: 106036 [2021-12-18 03:48:32,730 INFO L226 Difference]: Without dead ends: 70712 [2021-12-18 03:48:32,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 494 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2021-12-18 03:48:32,798 INFO L933 BasicCegarLoop]: 1972 mSDtfsCounter, 2068 mSDsluCounter, 22385 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 24357 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:48:32,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2114 Valid, 24357 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 03:48:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70712 states. [2021-12-18 03:48:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70712 to 39416. [2021-12-18 03:48:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39416 states, 31415 states have (on average 1.2548145790227598) internal successors, (39420), 31960 states have internal predecessors, (39420), 5205 states have call successors, (5205), 2654 states have call predecessors, (5205), 2795 states have return successors, (5720), 5272 states have call predecessors, (5720), 5204 states have call successors, (5720) [2021-12-18 03:48:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39416 states to 39416 states and 50345 transitions. [2021-12-18 03:48:36,128 INFO L78 Accepts]: Start accepts. Automaton has 39416 states and 50345 transitions. Word has length 437 [2021-12-18 03:48:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:48:36,128 INFO L470 AbstractCegarLoop]: Abstraction has 39416 states and 50345 transitions. [2021-12-18 03:48:36,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 11 states have internal predecessors, (171), 4 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (34), 6 states have call predecessors, (34), 4 states have call successors, (34) [2021-12-18 03:48:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 39416 states and 50345 transitions. [2021-12-18 03:48:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-12-18 03:48:36,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:48:36,160 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:48:36,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 03:48:36,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-18 03:48:36,361 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:48:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:48:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2112977917, now seen corresponding path program 1 times [2021-12-18 03:48:36,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:48:36,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285707276] [2021-12-18 03:48:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:48:36,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:48:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:48:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:48:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:48:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:48:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:48:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:48:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:48:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:48:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:48:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:48:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:48:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:48:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:48:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:48:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:48:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:48:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 03:48:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 03:48:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 03:48:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 03:48:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-18 03:48:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:48:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:36,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 03:48:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:48:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:48:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 03:48:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2021-12-18 03:48:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2021-12-18 03:48:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-18 03:48:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-12-18 03:48:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:48:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 4504 trivial. 0 not checked. [2021-12-18 03:48:37,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:48:37,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285707276] [2021-12-18 03:48:37,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285707276] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:48:37,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174368947] [2021-12-18 03:48:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:48:37,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:48:37,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:48:37,326 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:48:37,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 03:48:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:48:49,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 3630 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-18 03:48:49,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:48:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 4476 trivial. 0 not checked. [2021-12-18 03:48:50,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:48:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2021-12-18 03:48:51,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174368947] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-18 03:48:51,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-18 03:48:51,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20, 16] total 34 [2021-12-18 03:48:51,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875090475] [2021-12-18 03:48:51,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:48:51,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 03:48:51,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:48:51,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 03:48:51,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 03:48:51,434 INFO L87 Difference]: Start difference. First operand 39416 states and 50345 transitions. Second operand has 11 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-18 03:48:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:48:58,842 INFO L93 Difference]: Finished difference Result 108946 states and 139286 transitions. [2021-12-18 03:48:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 03:48:58,842 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 456 [2021-12-18 03:48:58,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:48:59,020 INFO L225 Difference]: With dead ends: 108946 [2021-12-18 03:48:59,020 INFO L226 Difference]: Without dead ends: 69902 [2021-12-18 03:48:59,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 962 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=1252, Unknown=0, NotChecked=0, Total=1406 [2021-12-18 03:48:59,095 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 3924 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 1205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3970 SdHoareTripleChecker+Valid, 3530 SdHoareTripleChecker+Invalid, 4268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 03:48:59,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3970 Valid, 3530 Invalid, 4268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-18 03:48:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69902 states. [2021-12-18 03:49:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69902 to 39402. [2021-12-18 03:49:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39402 states, 31401 states have (on average 1.254928187000414) internal successors, (39406), 31953 states have internal predecessors, (39406), 5205 states have call successors, (5205), 2654 states have call predecessors, (5205), 2795 states have return successors, (5720), 5265 states have call predecessors, (5720), 5204 states have call successors, (5720) [2021-12-18 03:49:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39402 states to 39402 states and 50331 transitions. [2021-12-18 03:49:02,501 INFO L78 Accepts]: Start accepts. Automaton has 39402 states and 50331 transitions. Word has length 456 [2021-12-18 03:49:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:49:02,501 INFO L470 AbstractCegarLoop]: Abstraction has 39402 states and 50331 transitions. [2021-12-18 03:49:02,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 16.7) internal successors, (167), 9 states have internal predecessors, (167), 5 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-18 03:49:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 39402 states and 50331 transitions. [2021-12-18 03:49:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2021-12-18 03:49:02,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:49:02,546 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:49:02,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 03:49:02,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:49:02,747 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:49:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:49:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1169649869, now seen corresponding path program 1 times [2021-12-18 03:49:02,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:49:02,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100774242] [2021-12-18 03:49:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:49:02,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:49:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:49:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:49:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:49:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:49:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:49:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:49:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:49:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:49:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:49:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:49:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:49:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:49:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:49:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:49:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:49:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:49:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 03:49:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 03:49:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 03:49:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 03:49:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-18 03:49:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:49:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 03:49:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:49:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 03:49:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2021-12-18 03:49:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-18 03:49:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-12-18 03:49:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-18 03:49:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2021-12-18 03:49:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2021-12-18 03:49:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2021-12-18 03:49:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2021-12-18 03:49:03,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:49:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100774242] [2021-12-18 03:49:03,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100774242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:49:03,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:49:03,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 03:49:03,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010526141] [2021-12-18 03:49:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:49:03,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 03:49:03,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:49:03,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 03:49:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-18 03:49:03,134 INFO L87 Difference]: Start difference. First operand 39402 states and 50331 transitions. Second operand has 10 states, 10 states have (on average 19.4) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (40), 9 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 03:49:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:49:10,504 INFO L93 Difference]: Finished difference Result 108103 states and 145096 transitions. [2021-12-18 03:49:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 03:49:10,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (40), 9 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 495 [2021-12-18 03:49:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:49:10,693 INFO L225 Difference]: With dead ends: 108103 [2021-12-18 03:49:10,694 INFO L226 Difference]: Without dead ends: 69078 [2021-12-18 03:49:10,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-18 03:49:10,759 INFO L933 BasicCegarLoop]: 1193 mSDtfsCounter, 1850 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 1194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 4051 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:49:10,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1934 Valid, 4051 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-18 03:49:10,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69078 states. [2021-12-18 03:49:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69078 to 39430. [2021-12-18 03:49:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39430 states, 31429 states have (on average 1.2547010722581056) internal successors, (39434), 31981 states have internal predecessors, (39434), 5205 states have call successors, (5205), 2654 states have call predecessors, (5205), 2795 states have return successors, (5720), 5265 states have call predecessors, (5720), 5204 states have call successors, (5720) [2021-12-18 03:49:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39430 states to 39430 states and 50359 transitions. [2021-12-18 03:49:14,652 INFO L78 Accepts]: Start accepts. Automaton has 39430 states and 50359 transitions. Word has length 495 [2021-12-18 03:49:14,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:49:14,653 INFO L470 AbstractCegarLoop]: Abstraction has 39430 states and 50359 transitions. [2021-12-18 03:49:14,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (40), 9 states have call predecessors, (40), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 03:49:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 39430 states and 50359 transitions. [2021-12-18 03:49:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-12-18 03:49:14,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:49:14,704 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:49:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-18 03:49:14,704 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:49:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:49:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1471400364, now seen corresponding path program 1 times [2021-12-18 03:49:14,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:49:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186824282] [2021-12-18 03:49:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:49:14,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:49:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:49:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:49:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:49:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:49:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:49:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:49:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:49:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:49:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:49:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:49:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:49:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:49:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:49:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:49:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:49:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:49:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:14,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 03:49:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 03:49:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 03:49:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 03:49:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-18 03:49:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:49:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 03:49:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:49:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 03:49:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2021-12-18 03:49:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-12-18 03:49:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-18 03:49:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2021-12-18 03:49:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2021-12-18 03:49:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-12-18 03:49:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-12-18 03:49:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2021-12-18 03:49:15,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:49:15,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186824282] [2021-12-18 03:49:15,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186824282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:49:15,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:49:15,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-18 03:49:15,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625629696] [2021-12-18 03:49:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:49:15,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 03:49:15,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:49:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 03:49:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-18 03:49:15,162 INFO L87 Difference]: Start difference. First operand 39430 states and 50359 transitions. Second operand has 15 states, 15 states have (on average 13.066666666666666) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (40), 9 states have call predecessors, (40), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 03:49:26,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:49:26,389 INFO L93 Difference]: Finished difference Result 130951 states and 176679 transitions. [2021-12-18 03:49:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 03:49:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.066666666666666) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (40), 9 states have call predecessors, (40), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 497 [2021-12-18 03:49:26,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:49:26,609 INFO L225 Difference]: With dead ends: 130951 [2021-12-18 03:49:26,609 INFO L226 Difference]: Without dead ends: 91898 [2021-12-18 03:49:26,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2021-12-18 03:49:26,675 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 2324 mSDsluCounter, 8698 mSDsCounter, 0 mSdLazyCounter, 4398 mSolverCounterSat, 1069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2476 SdHoareTripleChecker+Valid, 10066 SdHoareTripleChecker+Invalid, 5467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1069 IncrementalHoareTripleChecker+Valid, 4398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:49:26,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2476 Valid, 10066 Invalid, 5467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1069 Valid, 4398 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-18 03:49:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91898 states. [2021-12-18 03:49:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91898 to 39598. [2021-12-18 03:49:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39598 states, 31569 states have (on average 1.2535715417023028) internal successors, (39574), 32121 states have internal predecessors, (39574), 5205 states have call successors, (5205), 2654 states have call predecessors, (5205), 2823 states have return successors, (5776), 5293 states have call predecessors, (5776), 5204 states have call successors, (5776) [2021-12-18 03:49:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39598 states to 39598 states and 50555 transitions. [2021-12-18 03:49:30,745 INFO L78 Accepts]: Start accepts. Automaton has 39598 states and 50555 transitions. Word has length 497 [2021-12-18 03:49:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:49:30,746 INFO L470 AbstractCegarLoop]: Abstraction has 39598 states and 50555 transitions. [2021-12-18 03:49:30,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.066666666666666) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (40), 9 states have call predecessors, (40), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-18 03:49:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 39598 states and 50555 transitions. [2021-12-18 03:49:30,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-12-18 03:49:30,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:49:30,789 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:49:30,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-18 03:49:30,789 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:49:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:49:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1202907222, now seen corresponding path program 1 times [2021-12-18 03:49:30,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:49:30,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86583583] [2021-12-18 03:49:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:49:30,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:49:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:49:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:49:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:49:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:49:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:49:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:49:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:49:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:49:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:49:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:49:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:49:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:49:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:49:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:49:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:49:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:49:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 03:49:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 03:49:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 03:49:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 03:49:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-18 03:49:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:49:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 03:49:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:49:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 03:49:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2021-12-18 03:49:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-12-18 03:49:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-18 03:49:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2021-12-18 03:49:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2021-12-18 03:49:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2021-12-18 03:49:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2021-12-18 03:49:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2021-12-18 03:49:31,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:49:31,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86583583] [2021-12-18 03:49:31,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86583583] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:49:31,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865757754] [2021-12-18 03:49:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:49:31,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:49:31,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:49:31,247 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:49:31,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 03:49:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:32,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 4084 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-18 03:49:32,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:49:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4598 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 4484 trivial. 0 not checked. [2021-12-18 03:49:32,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:49:32,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865757754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:49:32,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:49:33,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 14 [2021-12-18 03:49:33,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773994932] [2021-12-18 03:49:33,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:49:33,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 03:49:33,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:49:33,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 03:49:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:49:33,001 INFO L87 Difference]: Start difference. First operand 39598 states and 50555 transitions. Second operand has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-18 03:49:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:49:37,860 INFO L93 Difference]: Finished difference Result 92182 states and 118815 transitions. [2021-12-18 03:49:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 03:49:37,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) Word has length 498 [2021-12-18 03:49:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:49:38,023 INFO L225 Difference]: With dead ends: 92182 [2021-12-18 03:49:38,023 INFO L226 Difference]: Without dead ends: 52961 [2021-12-18 03:49:38,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 573 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-18 03:49:38,085 INFO L933 BasicCegarLoop]: 1230 mSDtfsCounter, 234 mSDsluCounter, 5863 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 7093 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:49:38,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 7093 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:49:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52961 states. [2021-12-18 03:49:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52961 to 39738. [2021-12-18 03:49:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39738 states, 31681 states have (on average 1.2526751049524951) internal successors, (39686), 32205 states have internal predecessors, (39686), 5205 states have call successors, (5205), 2654 states have call predecessors, (5205), 2851 states have return successors, (5804), 5349 states have call predecessors, (5804), 5204 states have call successors, (5804) [2021-12-18 03:49:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39738 states to 39738 states and 50695 transitions. [2021-12-18 03:49:41,787 INFO L78 Accepts]: Start accepts. Automaton has 39738 states and 50695 transitions. Word has length 498 [2021-12-18 03:49:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:49:41,787 INFO L470 AbstractCegarLoop]: Abstraction has 39738 states and 50695 transitions. [2021-12-18 03:49:41,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 4 states have call predecessors, (40), 2 states have call successors, (40) [2021-12-18 03:49:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 39738 states and 50695 transitions. [2021-12-18 03:49:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2021-12-18 03:49:41,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:49:41,833 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 13, 13, 13, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:49:41,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 03:49:42,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:49:42,040 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:49:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:49:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -404616850, now seen corresponding path program 2 times [2021-12-18 03:49:42,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:49:42,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104143524] [2021-12-18 03:49:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:49:42,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:49:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:49:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:49:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:49:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:49:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:49:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:49:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:49:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:49:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:49:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:49:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 03:49:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 03:49:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 03:49:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 03:49:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 03:49:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:49:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-18 03:49:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-12-18 03:49:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-18 03:49:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 03:49:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-18 03:49:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:49:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 03:49:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 03:49:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-18 03:49:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:49:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2021-12-18 03:49:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-12-18 03:49:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2021-12-18 03:49:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-18 03:49:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2021-12-18 03:49:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2021-12-18 03:49:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2021-12-18 03:49:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:49:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:49:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4610 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 4520 trivial. 0 not checked. [2021-12-18 03:49:43,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:49:43,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104143524] [2021-12-18 03:49:43,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104143524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:49:43,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398506956] [2021-12-18 03:49:43,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:49:43,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:49:43,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:49:43,474 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 03:49:43,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process