./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--usb_8dev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.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 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 03:40:23,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:40:23,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:40:23,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:40:24,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:40:24,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:40:24,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:40:24,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:40:24,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:40:24,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:40:24,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:40:24,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:40:24,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:40:24,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:40:24,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:40:24,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:40:24,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:40:24,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:40:24,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:40:24,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:40:24,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:40:24,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:40:24,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:40:24,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:40:24,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:40:24,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:40:24,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:40:24,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:40:24,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:40:24,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:40:24,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:40:24,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:40:24,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:40:24,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:40:24,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:40:24,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:40:24,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:40:24,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:40:24,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:40:24,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:40:24,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:40:24,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:40:24,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:40:24,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:40:24,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:40:24,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:40:24,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:40:24,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:40:24,070 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:40:24,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:40:24,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:40:24,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:40:24,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:40:24,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:40:24,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:40:24,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:40:24,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:40:24,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:40:24,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:40:24,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:40:24,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:40:24,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:40:24,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:40:24,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:40:24,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:40:24,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:40:24,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:40:24,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:40:24,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:40:24,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:40:24,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:40:24,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 [2021-11-04 03:40:24,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:40:24,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:40:24,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:40:24,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:40:24,251 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:40:24,252 INFO L432 ainManager$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--usb_8dev.ko-entry_point.cil.out.i [2021-11-04 03:40:24,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cacf1e12/bd388208c7c548649bec1dffd0f35606/FLAG256570e88 [2021-11-04 03:40:24,838 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:40:24,838 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--usb_8dev.ko-entry_point.cil.out.i [2021-11-04 03:40:24,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cacf1e12/bd388208c7c548649bec1dffd0f35606/FLAG256570e88 [2021-11-04 03:40:25,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cacf1e12/bd388208c7c548649bec1dffd0f35606 [2021-11-04 03:40:25,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:40:25,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:40:25,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:40:25,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:40:25,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:40:25,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:40:25" (1/1) ... [2021-11-04 03:40:25,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d60ee5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:25, skipping insertion in model container [2021-11-04 03:40:25,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:40:25" (1/1) ... [2021-11-04 03:40:25,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:40:25,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:40:25,968 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2021-11-04 03:40:26,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:40:26,295 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:40:26,402 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2021-11-04 03:40:26,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:40:26,571 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:40:26,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26 WrapperNode [2021-11-04 03:40:26,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:40:26,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:40:26,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:40:26,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:40:26,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:40:26,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:40:26,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:40:26,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:40:26,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:40:26,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:40:26,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:40:26,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:40:26,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (1/1) ... [2021-11-04 03:40:26,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:40:26,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:40:26,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 03:40:26,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 03:40:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:40:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-11-04 03:40:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-11-04 03:40:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:40:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:40:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:40:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-04 03:40:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-04 03:40:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2021-11-04 03:40:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2021-11-04 03:40:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:40:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:40:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:40:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:40:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:40:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:40:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:40:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:40:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:40:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:40:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:40:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:40:26,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:40:28,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:40:28,816 INFO L299 CfgBuilder]: Removed 561 assume(true) statements. [2021-11-04 03:40:28,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:40:28 BoogieIcfgContainer [2021-11-04 03:40:28,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:40:28,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:40:28,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:40:28,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:40:28,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:40:25" (1/3) ... [2021-11-04 03:40:28,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dcbd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:40:28, skipping insertion in model container [2021-11-04 03:40:28,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:40:26" (2/3) ... [2021-11-04 03:40:28,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dcbd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:40:28, skipping insertion in model container [2021-11-04 03:40:28,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:40:28" (3/3) ... [2021-11-04 03:40:28,825 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2021-11-04 03:40:28,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:40:28,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-04 03:40:28,874 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:40:28,881 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 03:40:28,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-04 03:40:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 573 states have (on average 1.4328097731239093) internal successors, (821), 579 states have internal predecessors, (821), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-04 03:40:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-04 03:40:28,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:28,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:28,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:28,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash 812919680, now seen corresponding path program 1 times [2021-11-04 03:40:28,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:28,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126522976] [2021-11-04 03:40:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:28,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:40:29,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:29,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126522976] [2021-11-04 03:40:29,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126522976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:29,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:29,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:40:29,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115804477] [2021-11-04 03:40:29,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:29,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:29,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:29,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:29,252 INFO L87 Difference]: Start difference. First operand has 590 states, 573 states have (on average 1.4328097731239093) internal successors, (821), 579 states have internal predecessors, (821), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:35,526 INFO L93 Difference]: Finished difference Result 1716 states and 2450 transitions. [2021-11-04 03:40:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-04 03:40:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:35,543 INFO L225 Difference]: With dead ends: 1716 [2021-11-04 03:40:35,543 INFO L226 Difference]: Without dead ends: 1113 [2021-11-04 03:40:35,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:35,550 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 766 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5700.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.44ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6142.70ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:35,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 49 Invalid, 1582 Unknown, 0 Unchecked, 9.44ms Time], IncrementalHoareTripleChecker [3 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 6142.70ms Time] [2021-11-04 03:40:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-04 03:40:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2021-11-04 03:40:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1086 states have (on average 1.3977900552486189) internal successors, (1518), 1092 states have internal predecessors, (1518), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-04 03:40:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1546 transitions. [2021-11-04 03:40:35,619 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1546 transitions. Word has length 17 [2021-11-04 03:40:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:35,619 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1546 transitions. [2021-11-04 03:40:35,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1546 transitions. [2021-11-04 03:40:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-04 03:40:35,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:35,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:35,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:40:35,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:35,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:35,622 INFO L85 PathProgramCache]: Analyzing trace with hash 366683969, now seen corresponding path program 1 times [2021-11-04 03:40:35,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:35,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730596133] [2021-11-04 03:40:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:35,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:40:35,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:35,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730596133] [2021-11-04 03:40:35,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730596133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:35,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:35,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:40:35,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949283243] [2021-11-04 03:40:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:35,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:35,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:35,760 INFO L87 Difference]: Start difference. First operand 1113 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:38,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:42,914 INFO L93 Difference]: Finished difference Result 3311 states and 4607 transitions. [2021-11-04 03:40:42,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:42,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-04 03:40:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:42,922 INFO L225 Difference]: With dead ends: 3311 [2021-11-04 03:40:42,923 INFO L226 Difference]: Without dead ends: 2211 [2021-11-04 03:40:42,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:42,930 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 768 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6680.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.99ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7046.48ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:42,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 35 Invalid, 1560 Unknown, 0 Unchecked, 4.99ms Time], IncrementalHoareTripleChecker [10 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 7046.48ms Time] [2021-11-04 03:40:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-11-04 03:40:42,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2199. [2021-11-04 03:40:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 2150 states have (on average 1.3944186046511629) internal successors, (2998), 2158 states have internal predecessors, (2998), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-04 03:40:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3054 transitions. [2021-11-04 03:40:43,000 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3054 transitions. Word has length 24 [2021-11-04 03:40:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:43,001 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 3054 transitions. [2021-11-04 03:40:43,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3054 transitions. [2021-11-04 03:40:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-04 03:40:43,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:43,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:43,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:40:43,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1517698873, now seen corresponding path program 1 times [2021-11-04 03:40:43,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:43,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682253296] [2021-11-04 03:40:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:43,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:40:43,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:43,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682253296] [2021-11-04 03:40:43,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682253296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:43,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:43,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:40:43,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070000187] [2021-11-04 03:40:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:43,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:43,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:43,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:43,129 INFO L87 Difference]: Start difference. First operand 2199 states and 3054 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:46,004 INFO L93 Difference]: Finished difference Result 2199 states and 3054 transitions. [2021-11-04 03:40:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:46,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-04 03:40:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:46,011 INFO L225 Difference]: With dead ends: 2199 [2021-11-04 03:40:46,011 INFO L226 Difference]: Without dead ends: 2197 [2021-11-04 03:40:46,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:46,013 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 774 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2628.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2816.74ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:46,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 14 Invalid, 783 Unknown, 0 Unchecked, 2.01ms Time], IncrementalHoareTripleChecker [0 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 2816.74ms Time] [2021-11-04 03:40:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2021-11-04 03:40:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2197. [2021-11-04 03:40:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2149 states have (on average 1.3941368078175895) internal successors, (2996), 2156 states have internal predecessors, (2996), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-04 03:40:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3052 transitions. [2021-11-04 03:40:46,112 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3052 transitions. Word has length 25 [2021-11-04 03:40:46,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:46,112 INFO L470 AbstractCegarLoop]: Abstraction has 2197 states and 3052 transitions. [2021-11-04 03:40:46,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:46,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3052 transitions. [2021-11-04 03:40:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-04 03:40:46,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:46,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:46,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:40:46,115 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash 195975179, now seen corresponding path program 1 times [2021-11-04 03:40:46,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:46,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313047222] [2021-11-04 03:40:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:46,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:40:46,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:46,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313047222] [2021-11-04 03:40:46,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313047222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:46,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:46,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:40:46,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900542452] [2021-11-04 03:40:46,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:46,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:46,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:46,197 INFO L87 Difference]: Start difference. First operand 2197 states and 3052 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:49,090 INFO L93 Difference]: Finished difference Result 2197 states and 3052 transitions. [2021-11-04 03:40:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-04 03:40:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:49,097 INFO L225 Difference]: With dead ends: 2197 [2021-11-04 03:40:49,098 INFO L226 Difference]: Without dead ends: 2195 [2021-11-04 03:40:49,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:49,099 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 771 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2644.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2832.20ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:49,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 14 Invalid, 781 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [0 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 2832.20ms Time] [2021-11-04 03:40:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-11-04 03:40:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2195. [2021-11-04 03:40:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2148 states have (on average 1.393854748603352) internal successors, (2994), 2154 states have internal predecessors, (2994), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-04 03:40:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3050 transitions. [2021-11-04 03:40:49,149 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3050 transitions. Word has length 26 [2021-11-04 03:40:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:49,149 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 3050 transitions. [2021-11-04 03:40:49,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3050 transitions. [2021-11-04 03:40:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-04 03:40:49,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:49,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:49,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 03:40:49,151 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1780263249, now seen corresponding path program 1 times [2021-11-04 03:40:49,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:49,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700740014] [2021-11-04 03:40:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:49,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:40:49,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:49,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700740014] [2021-11-04 03:40:49,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700740014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:49,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:49,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:40:49,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542693261] [2021-11-04 03:40:49,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:49,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:49,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:49,256 INFO L87 Difference]: Start difference. First operand 2195 states and 3050 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:53,208 INFO L93 Difference]: Finished difference Result 2195 states and 3050 transitions. [2021-11-04 03:40:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-04 03:40:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:53,214 INFO L225 Difference]: With dead ends: 2195 [2021-11-04 03:40:53,215 INFO L226 Difference]: Without dead ends: 2193 [2021-11-04 03:40:53,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:53,216 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 768 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3682.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3890.98ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:53,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 14 Invalid, 779 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [0 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 3890.98ms Time] [2021-11-04 03:40:53,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-11-04 03:40:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2021-11-04 03:40:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 2147 states have (on average 1.393572426641826) internal successors, (2992), 2152 states have internal predecessors, (2992), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-04 03:40:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3048 transitions. [2021-11-04 03:40:53,268 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3048 transitions. Word has length 27 [2021-11-04 03:40:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:53,269 INFO L470 AbstractCegarLoop]: Abstraction has 2193 states and 3048 transitions. [2021-11-04 03:40:53,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3048 transitions. [2021-11-04 03:40:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-04 03:40:53,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:53,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:53,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 03:40:53,270 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:53,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:53,271 INFO L85 PathProgramCache]: Analyzing trace with hash -646414123, now seen corresponding path program 1 times [2021-11-04 03:40:53,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:53,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468581231] [2021-11-04 03:40:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:53,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:40:53,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:53,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468581231] [2021-11-04 03:40:53,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468581231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:53,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:53,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:40:53,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022169174] [2021-11-04 03:40:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:53,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:53,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:53,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:53,343 INFO L87 Difference]: Start difference. First operand 2193 states and 3048 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:56,046 INFO L93 Difference]: Finished difference Result 2193 states and 3048 transitions. [2021-11-04 03:40:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-04 03:40:56,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:56,053 INFO L225 Difference]: With dead ends: 2193 [2021-11-04 03:40:56,053 INFO L226 Difference]: Without dead ends: 2184 [2021-11-04 03:40:56,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:56,054 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 765 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2482.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2650.99ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:56,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 14 Invalid, 777 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [0 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 2650.99ms Time] [2021-11-04 03:40:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2021-11-04 03:40:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2184. [2021-11-04 03:40:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2139 states have (on average 1.3931743805516597) internal successors, (2980), 2143 states have internal predecessors, (2980), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-04 03:40:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3036 transitions. [2021-11-04 03:40:56,131 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3036 transitions. Word has length 28 [2021-11-04 03:40:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:56,132 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 3036 transitions. [2021-11-04 03:40:56,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3036 transitions. [2021-11-04 03:40:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-04 03:40:56,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:56,135 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:56,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 03:40:56,136 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 593395099, now seen corresponding path program 1 times [2021-11-04 03:40:56,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:56,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282686518] [2021-11-04 03:40:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:56,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:40:56,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:56,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282686518] [2021-11-04 03:40:56,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282686518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:56,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:56,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:40:56,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249621752] [2021-11-04 03:40:56,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:56,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:56,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:56,207 INFO L87 Difference]: Start difference. First operand 2184 states and 3036 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:02,247 INFO L93 Difference]: Finished difference Result 4886 states and 6761 transitions. [2021-11-04 03:41:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:41:02,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-04 03:41:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:02,260 INFO L225 Difference]: With dead ends: 4886 [2021-11-04 03:41:02,261 INFO L226 Difference]: Without dead ends: 2715 [2021-11-04 03:41:02,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:02,266 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 195 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5662.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5946.89ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:02,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 28 Invalid, 1540 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [2 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 5946.89ms Time] [2021-11-04 03:41:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2021-11-04 03:41:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2710. [2021-11-04 03:41:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2665 states have (on average 1.3793621013133208) internal successors, (3676), 2669 states have internal predecessors, (3676), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-04 03:41:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3732 transitions. [2021-11-04 03:41:02,342 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3732 transitions. Word has length 52 [2021-11-04 03:41:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:02,342 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 3732 transitions. [2021-11-04 03:41:02,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3732 transitions. [2021-11-04 03:41:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-04 03:41:02,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:02,345 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 03:41:02,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 03:41:02,346 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:02,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1400283468, now seen corresponding path program 1 times [2021-11-04 03:41:02,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:02,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753338457] [2021-11-04 03:41:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:02,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:41:02,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:02,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753338457] [2021-11-04 03:41:02,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753338457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:02,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:41:02,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:41:02,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261883617] [2021-11-04 03:41:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:02,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:41:02,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:41:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:02,471 INFO L87 Difference]: Start difference. First operand 2710 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:06,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:10,043 INFO L93 Difference]: Finished difference Result 5986 states and 8241 transitions. [2021-11-04 03:41:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:41:10,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-04 03:41:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:10,056 INFO L225 Difference]: With dead ends: 5986 [2021-11-04 03:41:10,057 INFO L226 Difference]: Without dead ends: 3289 [2021-11-04 03:41:10,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:10,064 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 200 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7135.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7468.95ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:10,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 28 Invalid, 1726 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [7 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 7468.95ms Time] [2021-11-04 03:41:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-11-04 03:41:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3284. [2021-11-04 03:41:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 3239 states have (on average 1.3707934547699907) internal successors, (4440), 3243 states have internal predecessors, (4440), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-04 03:41:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4496 transitions. [2021-11-04 03:41:10,174 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4496 transitions. Word has length 62 [2021-11-04 03:41:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:10,174 INFO L470 AbstractCegarLoop]: Abstraction has 3284 states and 4496 transitions. [2021-11-04 03:41:10,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4496 transitions. [2021-11-04 03:41:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 03:41:10,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:10,177 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-04 03:41:10,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 03:41:10,178 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:10,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1202855944, now seen corresponding path program 1 times [2021-11-04 03:41:10,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:10,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760115200] [2021-11-04 03:41:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:10,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 03:41:10,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:10,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760115200] [2021-11-04 03:41:10,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760115200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:10,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:41:10,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:41:10,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295468123] [2021-11-04 03:41:10,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:10,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:41:10,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:41:10,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:10,254 INFO L87 Difference]: Start difference. First operand 3284 states and 4496 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:13,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:17,198 INFO L93 Difference]: Finished difference Result 7406 states and 10189 transitions. [2021-11-04 03:41:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:41:17,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-04 03:41:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:17,211 INFO L225 Difference]: With dead ends: 7406 [2021-11-04 03:41:17,211 INFO L226 Difference]: Without dead ends: 4135 [2021-11-04 03:41:17,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:17,217 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 463 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6500.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6830.50ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:17,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 31 Invalid, 1493 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [8 Valid, 1484 Invalid, 1 Unknown, 0 Unchecked, 6830.50ms Time] [2021-11-04 03:41:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-11-04 03:41:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 4126. [2021-11-04 03:41:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4045 states have (on average 1.3794808405438814) internal successors, (5580), 4053 states have internal predecessors, (5580), 48 states have call successors, (48), 32 states have call predecessors, (48), 32 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-04 03:41:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5676 transitions. [2021-11-04 03:41:17,313 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5676 transitions. Word has length 74 [2021-11-04 03:41:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:17,314 INFO L470 AbstractCegarLoop]: Abstraction has 4126 states and 5676 transitions. [2021-11-04 03:41:17,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:17,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5676 transitions. [2021-11-04 03:41:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-04 03:41:17,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:17,316 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-04 03:41:17,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 03:41:17,317 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash 38724080, now seen corresponding path program 1 times [2021-11-04 03:41:17,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:17,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962326695] [2021-11-04 03:41:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:17,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 03:41:17,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:17,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962326695] [2021-11-04 03:41:17,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962326695] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:41:17,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236364536] [2021-11-04 03:41:17,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:17,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:41:17,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:41:17,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:41:17,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 03:41:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:17,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 03:41:17,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:41:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 03:41:18,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:41:18,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236364536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:18,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:41:18,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-04 03:41:18,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494562088] [2021-11-04 03:41:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:18,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:41:18,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:41:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:41:18,053 INFO L87 Difference]: Start difference. First operand 4126 states and 5676 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:20,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:21,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:24,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:30,123 INFO L93 Difference]: Finished difference Result 11477 states and 15858 transitions. [2021-11-04 03:41:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:41:30,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-04 03:41:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:30,155 INFO L225 Difference]: With dead ends: 11477 [2021-11-04 03:41:30,156 INFO L226 Difference]: Without dead ends: 11472 [2021-11-04 03:41:30,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:41:30,161 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1936 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11261.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.02ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11835.11ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:30,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 42 Invalid, 2450 Unknown, 0 Unchecked, 9.02ms Time], IncrementalHoareTripleChecker [21 Valid, 2428 Invalid, 1 Unknown, 0 Unchecked, 11835.11ms Time] [2021-11-04 03:41:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11472 states. [2021-11-04 03:41:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11472 to 11270. [2021-11-04 03:41:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11270 states, 11029 states have (on average 1.3899718922839785) internal successors, (15330), 11053 states have internal predecessors, (15330), 144 states have call successors, (144), 96 states have call predecessors, (144), 96 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-04 03:41:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11270 states to 11270 states and 15618 transitions. [2021-11-04 03:41:30,451 INFO L78 Accepts]: Start accepts. Automaton has 11270 states and 15618 transitions. Word has length 76 [2021-11-04 03:41:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:30,452 INFO L470 AbstractCegarLoop]: Abstraction has 11270 states and 15618 transitions. [2021-11-04 03:41:30,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 11270 states and 15618 transitions. [2021-11-04 03:41:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 03:41:30,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:30,459 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-04 03:41:30,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 03:41:30,675 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,SelfDestructingSolverStorable9 [2021-11-04 03:41:30,676 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -483700015, now seen corresponding path program 1 times [2021-11-04 03:41:30,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:30,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554689703] [2021-11-04 03:41:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:30,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 03:41:30,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:30,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554689703] [2021-11-04 03:41:30,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554689703] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:41:30,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242984941] [2021-11-04 03:41:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:30,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:41:30,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:41:30,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:41:30,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 03:41:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:31,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 03:41:31,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:41:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:41:31,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:41:31,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242984941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:31,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:41:31,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-04 03:41:31,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851277273] [2021-11-04 03:41:31,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:31,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:41:31,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:41:31,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:41:31,422 INFO L87 Difference]: Start difference. First operand 11270 states and 15618 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:38,116 INFO L93 Difference]: Finished difference Result 17095 states and 23714 transitions. [2021-11-04 03:41:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:41:38,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-04 03:41:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:38,126 INFO L225 Difference]: With dead ends: 17095 [2021-11-04 03:41:38,126 INFO L226 Difference]: Without dead ends: 5545 [2021-11-04 03:41:38,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 25.07ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:41:38,138 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 711 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6232.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6504.48ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:38,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 14 Invalid, 1134 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [1 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 6504.48ms Time] [2021-11-04 03:41:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2021-11-04 03:41:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 5545. [2021-11-04 03:41:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 5424 states have (on average 1.387721238938053) internal successors, (7527), 5436 states have internal predecessors, (7527), 72 states have call successors, (72), 48 states have call predecessors, (72), 48 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 03:41:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 7671 transitions. [2021-11-04 03:41:38,256 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 7671 transitions. Word has length 83 [2021-11-04 03:41:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:38,257 INFO L470 AbstractCegarLoop]: Abstraction has 5545 states and 7671 transitions. [2021-11-04 03:41:38,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 7671 transitions. [2021-11-04 03:41:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-04 03:41:38,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:38,261 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-04 03:41:38,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 03:41:38,467 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,SelfDestructingSolverStorable10 [2021-11-04 03:41:38,467 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:38,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:38,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1092841713, now seen corresponding path program 1 times [2021-11-04 03:41:38,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:38,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631857015] [2021-11-04 03:41:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:38,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-04 03:41:38,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:38,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631857015] [2021-11-04 03:41:38,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631857015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:38,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:41:38,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:41:38,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067814801] [2021-11-04 03:41:38,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:38,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:41:38,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:41:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:38,539 INFO L87 Difference]: Start difference. First operand 5545 states and 7671 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:44,090 INFO L93 Difference]: Finished difference Result 14869 states and 20699 transitions. [2021-11-04 03:41:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:41:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-04 03:41:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:44,111 INFO L225 Difference]: With dead ends: 14869 [2021-11-04 03:41:44,111 INFO L226 Difference]: Without dead ends: 9322 [2021-11-04 03:41:44,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:44,123 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 615 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5014.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5349.85ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:44,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 42 Invalid, 2093 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [3 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 5349.85ms Time] [2021-11-04 03:41:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2021-11-04 03:41:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 9271. [2021-11-04 03:41:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9271 states, 9030 states have (on average 1.399889258028793) internal successors, (12641), 9054 states have internal predecessors, (12641), 144 states have call successors, (144), 96 states have call predecessors, (144), 96 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-04 03:41:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9271 states to 9271 states and 12929 transitions. [2021-11-04 03:41:44,369 INFO L78 Accepts]: Start accepts. Automaton has 9271 states and 12929 transitions. Word has length 86 [2021-11-04 03:41:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:44,369 INFO L470 AbstractCegarLoop]: Abstraction has 9271 states and 12929 transitions. [2021-11-04 03:41:44,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 9271 states and 12929 transitions. [2021-11-04 03:41:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-04 03:41:44,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:44,377 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-04 03:41:44,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 03:41:44,377 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1975174479, now seen corresponding path program 2 times [2021-11-04 03:41:44,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:44,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059038062] [2021-11-04 03:41:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:44,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:41:44,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:44,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059038062] [2021-11-04 03:41:44,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059038062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:44,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:41:44,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:41:44,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699946312] [2021-11-04 03:41:44,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:44,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:41:44,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:44,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:41:44,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:44,459 INFO L87 Difference]: Start difference. First operand 9271 states and 12929 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:49,631 INFO L93 Difference]: Finished difference Result 19877 states and 27795 transitions. [2021-11-04 03:41:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:41:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-04 03:41:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:49,652 INFO L225 Difference]: With dead ends: 19877 [2021-11-04 03:41:49,652 INFO L226 Difference]: Without dead ends: 10619 [2021-11-04 03:41:49,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:41:49,664 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 734 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4645.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4939.45ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:49,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 35 Invalid, 1424 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [4 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 4939.45ms Time] [2021-11-04 03:41:49,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10619 states. [2021-11-04 03:41:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10619 to 10487. [2021-11-04 03:41:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10487 states, 10206 states have (on average 1.4016264942190868) internal successors, (14305), 10234 states have internal predecessors, (14305), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:41:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10487 states to 10487 states and 14641 transitions. [2021-11-04 03:41:49,909 INFO L78 Accepts]: Start accepts. Automaton has 10487 states and 14641 transitions. Word has length 86 [2021-11-04 03:41:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:49,909 INFO L470 AbstractCegarLoop]: Abstraction has 10487 states and 14641 transitions. [2021-11-04 03:41:49,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:49,910 INFO L276 IsEmpty]: Start isEmpty. Operand 10487 states and 14641 transitions. [2021-11-04 03:41:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-04 03:41:49,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:49,914 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:41:49,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 03:41:49,914 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash -401392373, now seen corresponding path program 1 times [2021-11-04 03:41:49,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:49,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976029884] [2021-11-04 03:41:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:49,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:41:49,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:49,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976029884] [2021-11-04 03:41:49,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976029884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:41:49,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121311022] [2021-11-04 03:41:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:49,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:41:49,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:41:49,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:41:49,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 03:41:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:50,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 03:41:50,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:41:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:41:50,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:41:50,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121311022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:50,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:41:50,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 03:41:50,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529284030] [2021-11-04 03:41:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:50,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:41:50,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:41:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:41:50,490 INFO L87 Difference]: Start difference. First operand 10487 states and 14641 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:53,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:58,419 INFO L93 Difference]: Finished difference Result 21687 states and 30321 transitions. [2021-11-04 03:41:58,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:41:58,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-04 03:41:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:58,453 INFO L225 Difference]: With dead ends: 21687 [2021-11-04 03:41:58,453 INFO L226 Difference]: Without dead ends: 11390 [2021-11-04 03:41:58,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.39ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:41:58,470 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 565 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7338.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7701.94ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:58,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 36 Invalid, 1739 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [6 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 7701.94ms Time] [2021-11-04 03:41:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11390 states. [2021-11-04 03:41:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11390 to 11385. [2021-11-04 03:41:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11385 states, 11104 states have (on average 1.3994056195965419) internal successors, (15539), 11132 states have internal predecessors, (15539), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:41:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11385 states to 11385 states and 15875 transitions. [2021-11-04 03:41:58,782 INFO L78 Accepts]: Start accepts. Automaton has 11385 states and 15875 transitions. Word has length 88 [2021-11-04 03:41:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:58,782 INFO L470 AbstractCegarLoop]: Abstraction has 11385 states and 15875 transitions. [2021-11-04 03:41:58,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 11385 states and 15875 transitions. [2021-11-04 03:41:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-04 03:41:58,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:58,787 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:41:58,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 03:41:59,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:41:59,003 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:41:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2088136589, now seen corresponding path program 1 times [2021-11-04 03:41:59,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:59,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864294131] [2021-11-04 03:41:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:59,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 03:41:59,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:59,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864294131] [2021-11-04 03:41:59,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864294131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:41:59,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:41:59,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:41:59,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853206470] [2021-11-04 03:41:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:41:59,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:41:59,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:41:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:41:59,069 INFO L87 Difference]: Start difference. First operand 11385 states and 15875 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:42:02,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:10,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:42:10,115 INFO L93 Difference]: Finished difference Result 39454 states and 54898 transitions. [2021-11-04 03:42:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:42:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-04 03:42:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:42:10,172 INFO L225 Difference]: With dead ends: 39454 [2021-11-04 03:42:10,172 INFO L226 Difference]: Without dead ends: 28259 [2021-11-04 03:42:10,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:42:10,194 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 1171 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9977.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.39ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10498.30ms IncrementalHoareTripleChecker+Time [2021-11-04 03:42:10,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 58 Invalid, 2672 Unknown, 0 Unchecked, 7.39ms Time], IncrementalHoareTripleChecker [4 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 10498.30ms Time] [2021-11-04 03:42:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28259 states. [2021-11-04 03:42:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28259 to 11413. [2021-11-04 03:42:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11132 states have (on average 1.398401006108516) internal successors, (15567), 11160 states have internal predecessors, (15567), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:42:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 15903 transitions. [2021-11-04 03:42:10,877 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 15903 transitions. Word has length 88 [2021-11-04 03:42:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:42:10,878 INFO L470 AbstractCegarLoop]: Abstraction has 11413 states and 15903 transitions. [2021-11-04 03:42:10,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:42:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 15903 transitions. [2021-11-04 03:42:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 03:42:10,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:42:10,882 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:42:10,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 03:42:10,883 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:42:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:42:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1530586731, now seen corresponding path program 1 times [2021-11-04 03:42:10,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:42:10,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139511513] [2021-11-04 03:42:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:42:10,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:42:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:42:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 03:42:10,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:42:10,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139511513] [2021-11-04 03:42:10,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139511513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:42:10,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:42:10,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:42:10,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297066747] [2021-11-04 03:42:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:42:10,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:42:10,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:42:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:42:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:42:10,964 INFO L87 Difference]: Start difference. First operand 11413 states and 15903 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:42:13,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:16,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:42:28,215 INFO L93 Difference]: Finished difference Result 43365 states and 60243 transitions. [2021-11-04 03:42:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:42:28,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-04 03:42:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:42:28,266 INFO L225 Difference]: With dead ends: 43365 [2021-11-04 03:42:28,266 INFO L226 Difference]: Without dead ends: 32142 [2021-11-04 03:42:28,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:42:28,282 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 1748 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15655.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 3683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.71ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16381.30ms IncrementalHoareTripleChecker+Time [2021-11-04 03:42:28,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 52 Invalid, 3683 Unknown, 0 Unchecked, 10.71ms Time], IncrementalHoareTripleChecker [14 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 16381.30ms Time] [2021-11-04 03:42:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32142 states. [2021-11-04 03:42:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32142 to 11525. [2021-11-04 03:42:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11525 states, 11244 states have (on average 1.3969228032728567) internal successors, (15707), 11272 states have internal predecessors, (15707), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:42:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11525 states to 11525 states and 16043 transitions. [2021-11-04 03:42:28,882 INFO L78 Accepts]: Start accepts. Automaton has 11525 states and 16043 transitions. Word has length 89 [2021-11-04 03:42:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:42:28,882 INFO L470 AbstractCegarLoop]: Abstraction has 11525 states and 16043 transitions. [2021-11-04 03:42:28,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:42:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 11525 states and 16043 transitions. [2021-11-04 03:42:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-04 03:42:28,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:42:28,887 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:42:28,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 03:42:28,888 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:42:28,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:42:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash 859087929, now seen corresponding path program 1 times [2021-11-04 03:42:28,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:42:28,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413936289] [2021-11-04 03:42:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:42:28,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:42:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:42:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 03:42:29,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:42:29,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413936289] [2021-11-04 03:42:29,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413936289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:42:29,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:42:29,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-04 03:42:29,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072294388] [2021-11-04 03:42:29,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:42:29,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 03:42:29,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:42:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 03:42:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 03:42:29,088 INFO L87 Difference]: Start difference. First operand 11525 states and 16043 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:42:38,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:41,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:43,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:45,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:46,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:25,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:31,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:33,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:40,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:53,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:54,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:56,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:58,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:01,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:08,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:10,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:15,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:25,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:31,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:40,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:42,089 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:46,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:51,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:51,601 INFO L93 Difference]: Finished difference Result 89374 states and 124202 transitions. [2021-11-04 03:44:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-04 03:44:51,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-04 03:44:51,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:51,832 INFO L225 Difference]: With dead ends: 89374 [2021-11-04 03:44:51,833 INFO L226 Difference]: Without dead ends: 78039 [2021-11-04 03:44:51,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2115 ImplicationChecksByTransitivity, 989.43ms TimeCoverageRelationStatistics Valid=1024, Invalid=4526, Unknown=0, NotChecked=0, Total=5550 [2021-11-04 03:44:51,865 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 7824 mSDsluCounter, 20919 mSDsCounter, 0 mSdLazyCounter, 26618 mSolverCounterSat, 129 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132493.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7824 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 26752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.23ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 26618 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137534.06ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:51,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7824 Valid, 278 Invalid, 26752 Unknown, 0 Unchecked, 74.23ms Time], IncrementalHoareTripleChecker [129 Valid, 26618 Invalid, 5 Unknown, 0 Unchecked, 137534.06ms Time] [2021-11-04 03:44:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78039 states. [2021-11-04 03:44:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78039 to 11525. [2021-11-04 03:44:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11525 states, 11244 states have (on average 1.3963002490217005) internal successors, (15700), 11272 states have internal predecessors, (15700), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:44:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11525 states to 11525 states and 16036 transitions. [2021-11-04 03:44:52,987 INFO L78 Accepts]: Start accepts. Automaton has 11525 states and 16036 transitions. Word has length 91 [2021-11-04 03:44:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:52,987 INFO L470 AbstractCegarLoop]: Abstraction has 11525 states and 16036 transitions. [2021-11-04 03:44:52,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:52,988 INFO L276 IsEmpty]: Start isEmpty. Operand 11525 states and 16036 transitions. [2021-11-04 03:44:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 03:44:52,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:52,993 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:44:52,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-04 03:44:52,993 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:44:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1126116685, now seen corresponding path program 1 times [2021-11-04 03:44:52,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:52,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844307971] [2021-11-04 03:44:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:52,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 03:44:53,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:53,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844307971] [2021-11-04 03:44:53,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844307971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:44:53,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:44:53,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-04 03:44:53,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539974289] [2021-11-04 03:44:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:44:53,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-04 03:44:53,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-04 03:44:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-04 03:44:53,290 INFO L87 Difference]: Start difference. First operand 11525 states and 16036 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:55,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:59,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:01,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:05,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:06,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:08,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:10,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:01,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:04,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:06,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:07,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:10,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:13,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:15,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:20,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:24,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:32,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:34,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:54,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:46:58,907 INFO L93 Difference]: Finished difference Result 80493 states and 111717 transitions. [2021-11-04 03:46:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-04 03:46:58,907 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 03:46:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:46:59,036 INFO L225 Difference]: With dead ends: 80493 [2021-11-04 03:46:59,037 INFO L226 Difference]: Without dead ends: 66314 [2021-11-04 03:46:59,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2807 ImplicationChecksByTransitivity, 2152.40ms TimeCoverageRelationStatistics Valid=1485, Invalid=5997, Unknown=0, NotChecked=0, Total=7482 [2021-11-04 03:46:59,066 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 11060 mSDsluCounter, 18082 mSDsCounter, 0 mSdLazyCounter, 22366 mSolverCounterSat, 176 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112765.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11060 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 22547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.77ms SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 22366 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117240.14ms IncrementalHoareTripleChecker+Time [2021-11-04 03:46:59,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11060 Valid, 112 Invalid, 22547 Unknown, 0 Unchecked, 81.77ms Time], IncrementalHoareTripleChecker [176 Valid, 22366 Invalid, 5 Unknown, 0 Unchecked, 117240.14ms Time] [2021-11-04 03:46:59,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66314 states. [2021-11-04 03:47:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66314 to 14663. [2021-11-04 03:47:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14663 states, 14382 states have (on average 1.3926435822555974) internal successors, (20029), 14410 states have internal predecessors, (20029), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:47:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14663 states to 14663 states and 20365 transitions. [2021-11-04 03:47:00,654 INFO L78 Accepts]: Start accepts. Automaton has 14663 states and 20365 transitions. Word has length 97 [2021-11-04 03:47:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:47:00,654 INFO L470 AbstractCegarLoop]: Abstraction has 14663 states and 20365 transitions. [2021-11-04 03:47:00,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 14663 states and 20365 transitions. [2021-11-04 03:47:00,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-04 03:47:00,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:47:00,663 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 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] [2021-11-04 03:47:00,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-04 03:47:00,663 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:47:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:47:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash -881987495, now seen corresponding path program 1 times [2021-11-04 03:47:00,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:47:00,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015443817] [2021-11-04 03:47:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:00,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:47:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 03:47:00,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:47:00,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015443817] [2021-11-04 03:47:00,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015443817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:47:00,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:47:00,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:47:00,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196379787] [2021-11-04 03:47:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:47:00,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:47:00,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:47:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:47:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:47:00,727 INFO L87 Difference]: Start difference. First operand 14663 states and 20365 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:03,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:05,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:07,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:12,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:20,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:47:20,996 INFO L93 Difference]: Finished difference Result 36845 states and 51012 transitions. [2021-11-04 03:47:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:47:20,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-04 03:47:20,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:47:21,040 INFO L225 Difference]: With dead ends: 36845 [2021-11-04 03:47:21,040 INFO L226 Difference]: Without dead ends: 22195 [2021-11-04 03:47:21,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:47:21,058 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 1179 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17574.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.02ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18267.75ms IncrementalHoareTripleChecker+Time [2021-11-04 03:47:21,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 66 Invalid, 3367 Unknown, 0 Unchecked, 7.02ms Time], IncrementalHoareTripleChecker [4 Valid, 3360 Invalid, 3 Unknown, 0 Unchecked, 18267.75ms Time] [2021-11-04 03:47:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22195 states. [2021-11-04 03:47:22,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22195 to 14739. [2021-11-04 03:47:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14739 states, 14458 states have (on average 1.390579609904551) internal successors, (20105), 14486 states have internal predecessors, (20105), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:47:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14739 states to 14739 states and 20441 transitions. [2021-11-04 03:47:22,324 INFO L78 Accepts]: Start accepts. Automaton has 14739 states and 20441 transitions. Word has length 115 [2021-11-04 03:47:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:47:22,324 INFO L470 AbstractCegarLoop]: Abstraction has 14739 states and 20441 transitions. [2021-11-04 03:47:22,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14739 states and 20441 transitions. [2021-11-04 03:47:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-04 03:47:22,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:47:22,332 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-04 03:47:22,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-04 03:47:22,333 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:47:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:47:22,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1651484912, now seen corresponding path program 1 times [2021-11-04 03:47:22,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:47:22,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076685459] [2021-11-04 03:47:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:22,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:47:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:47:22,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:47:22,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076685459] [2021-11-04 03:47:22,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076685459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:47:22,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:47:22,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:47:22,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271361438] [2021-11-04 03:47:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:47:22,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:47:22,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:47:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:47:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:47:22,447 INFO L87 Difference]: Start difference. First operand 14739 states and 20441 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:47:29,021 INFO L93 Difference]: Finished difference Result 29507 states and 40930 transitions. [2021-11-04 03:47:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:47:29,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-04 03:47:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:47:29,046 INFO L225 Difference]: With dead ends: 29507 [2021-11-04 03:47:29,046 INFO L226 Difference]: Without dead ends: 14781 [2021-11-04 03:47:29,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:47:29,064 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4946.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5226.32ms IncrementalHoareTripleChecker+Time [2021-11-04 03:47:29,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 1541 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [0 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 5226.32ms Time] [2021-11-04 03:47:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14781 states. [2021-11-04 03:47:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14781 to 14760. [2021-11-04 03:47:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14760 states, 14479 states have (on average 1.3900131224532082) internal successors, (20126), 14507 states have internal predecessors, (20126), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:47:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14760 states to 14760 states and 20462 transitions. [2021-11-04 03:47:30,245 INFO L78 Accepts]: Start accepts. Automaton has 14760 states and 20462 transitions. Word has length 117 [2021-11-04 03:47:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:47:30,245 INFO L470 AbstractCegarLoop]: Abstraction has 14760 states and 20462 transitions. [2021-11-04 03:47:30,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 14760 states and 20462 transitions. [2021-11-04 03:47:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-04 03:47:30,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:47:30,253 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 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] [2021-11-04 03:47:30,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-04 03:47:30,253 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:47:30,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:47:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash 809322604, now seen corresponding path program 1 times [2021-11-04 03:47:30,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:47:30,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987511350] [2021-11-04 03:47:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:30,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:47:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 03:47:30,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:47:30,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987511350] [2021-11-04 03:47:30,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987511350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:47:30,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:47:30,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:47:30,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377258837] [2021-11-04 03:47:30,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:47:30,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:47:30,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:47:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:47:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:47:30,352 INFO L87 Difference]: Start difference. First operand 14760 states and 20462 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:34,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:37,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:47:43,530 INFO L93 Difference]: Finished difference Result 35317 states and 48933 transitions. [2021-11-04 03:47:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:47:43,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-04 03:47:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:47:43,564 INFO L225 Difference]: With dead ends: 35317 [2021-11-04 03:47:43,565 INFO L226 Difference]: Without dead ends: 20570 [2021-11-04 03:47:43,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:47:43,586 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 1083 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 3164 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10914.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.02ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3164 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11462.66ms IncrementalHoareTripleChecker+Time [2021-11-04 03:47:43,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 66 Invalid, 3170 Unknown, 0 Unchecked, 7.02ms Time], IncrementalHoareTripleChecker [5 Valid, 3164 Invalid, 1 Unknown, 0 Unchecked, 11462.66ms Time] [2021-11-04 03:47:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20570 states. [2021-11-04 03:47:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20570 to 14726. [2021-11-04 03:47:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14726 states, 14445 states have (on average 1.38975424022153) internal successors, (20075), 14473 states have internal predecessors, (20075), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:47:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14726 states to 14726 states and 20411 transitions. [2021-11-04 03:47:44,844 INFO L78 Accepts]: Start accepts. Automaton has 14726 states and 20411 transitions. Word has length 119 [2021-11-04 03:47:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:47:44,844 INFO L470 AbstractCegarLoop]: Abstraction has 14726 states and 20411 transitions. [2021-11-04 03:47:44,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14726 states and 20411 transitions. [2021-11-04 03:47:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-04 03:47:44,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:47:44,850 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-04 03:47:44,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-04 03:47:44,850 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:47:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:47:44,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1310519596, now seen corresponding path program 1 times [2021-11-04 03:47:44,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:47:44,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991056101] [2021-11-04 03:47:44,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:44,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:47:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 03:47:44,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:47:44,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991056101] [2021-11-04 03:47:44,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991056101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:47:44,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967024679] [2021-11-04 03:47:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:44,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:47:44,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:47:44,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:47:44,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 03:47:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:45,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 03:47:45,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:47:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 03:47:45,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:47:45,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967024679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:47:45,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:47:45,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 03:47:45,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066527243] [2021-11-04 03:47:45,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:47:45,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:47:45,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:47:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:47:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:47:45,628 INFO L87 Difference]: Start difference. First operand 14726 states and 20411 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:52,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:47:52,909 INFO L93 Difference]: Finished difference Result 29264 states and 40576 transitions. [2021-11-04 03:47:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:47:52,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-04 03:47:52,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:47:52,941 INFO L225 Difference]: With dead ends: 29264 [2021-11-04 03:47:52,941 INFO L226 Difference]: Without dead ends: 14731 [2021-11-04 03:47:52,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.14ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:47:52,964 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 540 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5612.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.23ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5930.28ms IncrementalHoareTripleChecker+Time [2021-11-04 03:47:52,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 31 Invalid, 1347 Unknown, 0 Unchecked, 3.23ms Time], IncrementalHoareTripleChecker [6 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 5930.28ms Time] [2021-11-04 03:47:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14731 states. [2021-11-04 03:47:54,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14731 to 14726. [2021-11-04 03:47:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14726 states, 14445 states have (on average 1.386846659743856) internal successors, (20033), 14473 states have internal predecessors, (20033), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:47:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14726 states to 14726 states and 20369 transitions. [2021-11-04 03:47:54,278 INFO L78 Accepts]: Start accepts. Automaton has 14726 states and 20369 transitions. Word has length 119 [2021-11-04 03:47:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:47:54,279 INFO L470 AbstractCegarLoop]: Abstraction has 14726 states and 20369 transitions. [2021-11-04 03:47:54,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 14726 states and 20369 transitions. [2021-11-04 03:47:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-04 03:47:54,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:47:54,287 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 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] [2021-11-04 03:47:54,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 03:47:54,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:47:54,507 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:47:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:47:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1233727166, now seen corresponding path program 1 times [2021-11-04 03:47:54,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:47:54,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834532584] [2021-11-04 03:47:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:54,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:47:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 03:47:54,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:47:54,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834532584] [2021-11-04 03:47:54,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834532584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:47:54,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494809965] [2021-11-04 03:47:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:47:54,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:47:54,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:47:54,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:47:54,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 03:47:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:47:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 03:47:55,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:47:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-04 03:47:55,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:47:55,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494809965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:47:55,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:47:55,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-04 03:47:55,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933858502] [2021-11-04 03:47:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:47:55,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:47:55,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:47:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:47:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-04 03:47:55,328 INFO L87 Difference]: Start difference. First operand 14726 states and 20369 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:47:56,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:58,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:01,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:06,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:08,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:48:12,373 INFO L93 Difference]: Finished difference Result 26937 states and 37122 transitions. [2021-11-04 03:48:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:48:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-04 03:48:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:48:12,428 INFO L225 Difference]: With dead ends: 26937 [2021-11-04 03:48:12,428 INFO L226 Difference]: Without dead ends: 26917 [2021-11-04 03:48:12,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.88ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-04 03:48:12,438 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1460 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13860.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14513.90ms IncrementalHoareTripleChecker+Time [2021-11-04 03:48:12,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 49 Invalid, 2485 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [6 Valid, 2478 Invalid, 1 Unknown, 0 Unchecked, 14513.90ms Time] [2021-11-04 03:48:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26917 states. [2021-11-04 03:48:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26917 to 15342. [2021-11-04 03:48:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15342 states, 15061 states have (on average 1.3832414846291747) internal successors, (20833), 15089 states have internal predecessors, (20833), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:48:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15342 states to 15342 states and 21169 transitions. [2021-11-04 03:48:14,279 INFO L78 Accepts]: Start accepts. Automaton has 15342 states and 21169 transitions. Word has length 132 [2021-11-04 03:48:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:48:14,280 INFO L470 AbstractCegarLoop]: Abstraction has 15342 states and 21169 transitions. [2021-11-04 03:48:14,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:48:14,280 INFO L276 IsEmpty]: Start isEmpty. Operand 15342 states and 21169 transitions. [2021-11-04 03:48:14,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 03:48:14,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:48:14,288 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 3, 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] [2021-11-04 03:48:14,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 03:48:14,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-04 03:48:14,489 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:48:14,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:48:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1325074740, now seen corresponding path program 1 times [2021-11-04 03:48:14,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:48:14,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919932985] [2021-11-04 03:48:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:48:14,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:48:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:48:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-04 03:48:14,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:48:14,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919932985] [2021-11-04 03:48:14,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919932985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:48:14,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:48:14,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:48:14,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998282622] [2021-11-04 03:48:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:48:14,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:48:14,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:48:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:48:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:48:14,570 INFO L87 Difference]: Start difference. First operand 15342 states and 21169 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:48:15,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:19,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:23,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:24,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:48:32,259 INFO L93 Difference]: Finished difference Result 39949 states and 55062 transitions. [2021-11-04 03:48:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:48:32,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-04 03:48:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:48:32,310 INFO L225 Difference]: With dead ends: 39949 [2021-11-04 03:48:32,310 INFO L226 Difference]: Without dead ends: 24800 [2021-11-04 03:48:32,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:48:32,330 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 874 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13990.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14558.98ms IncrementalHoareTripleChecker+Time [2021-11-04 03:48:32,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 46 Invalid, 2753 Unknown, 0 Unchecked, 5.85ms Time], IncrementalHoareTripleChecker [2 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 14558.98ms Time] [2021-11-04 03:48:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24800 states. [2021-11-04 03:48:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24800 to 15384. [2021-11-04 03:48:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15384 states, 15103 states have (on average 1.382175726676819) internal successors, (20875), 15131 states have internal predecessors, (20875), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:48:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15384 states to 15384 states and 21211 transitions. [2021-11-04 03:48:34,267 INFO L78 Accepts]: Start accepts. Automaton has 15384 states and 21211 transitions. Word has length 140 [2021-11-04 03:48:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:48:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 15384 states and 21211 transitions. [2021-11-04 03:48:34,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:48:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 15384 states and 21211 transitions. [2021-11-04 03:48:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-04 03:48:34,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:48:34,276 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 3, 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] [2021-11-04 03:48:34,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-04 03:48:34,276 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:48:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:48:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1835795162, now seen corresponding path program 1 times [2021-11-04 03:48:34,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:48:34,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648825191] [2021-11-04 03:48:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:48:34,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:48:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:48:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 03:48:34,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:48:34,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648825191] [2021-11-04 03:48:34,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648825191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:48:34,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:48:34,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:48:34,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200531617] [2021-11-04 03:48:34,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:48:34,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:48:34,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:48:34,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:48:34,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:48:34,357 INFO L87 Difference]: Start difference. First operand 15384 states and 21211 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:48:37,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:40,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:42,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:44,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:48:51,410 INFO L93 Difference]: Finished difference Result 38074 states and 52392 transitions. [2021-11-04 03:48:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:48:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-04 03:48:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:48:51,453 INFO L225 Difference]: With dead ends: 38074 [2021-11-04 03:48:51,454 INFO L226 Difference]: Without dead ends: 22703 [2021-11-04 03:48:51,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.21ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:48:51,473 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 513 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13651.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.41ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14167.39ms IncrementalHoareTripleChecker+Time [2021-11-04 03:48:51,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 52 Invalid, 2774 Unknown, 0 Unchecked, 5.41ms Time], IncrementalHoareTripleChecker [14 Valid, 2759 Invalid, 1 Unknown, 0 Unchecked, 14167.39ms Time] [2021-11-04 03:48:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22703 states. [2021-11-04 03:48:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22703 to 15242. [2021-11-04 03:48:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15242 states, 14961 states have (on average 1.3715660717866454) internal successors, (20520), 14989 states have internal predecessors, (20520), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:48:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15242 states to 15242 states and 20856 transitions. [2021-11-04 03:48:53,430 INFO L78 Accepts]: Start accepts. Automaton has 15242 states and 20856 transitions. Word has length 142 [2021-11-04 03:48:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:48:53,431 INFO L470 AbstractCegarLoop]: Abstraction has 15242 states and 20856 transitions. [2021-11-04 03:48:53,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:48:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 15242 states and 20856 transitions. [2021-11-04 03:48:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-04 03:48:53,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:48:53,438 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 3, 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] [2021-11-04 03:48:53,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-04 03:48:53,439 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:48:53,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:48:53,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1702566639, now seen corresponding path program 1 times [2021-11-04 03:48:53,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:48:53,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962283372] [2021-11-04 03:48:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:48:53,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:48:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:48:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-04 03:48:53,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:48:53,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962283372] [2021-11-04 03:48:53,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962283372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:48:53,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:48:53,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 03:48:53,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486262522] [2021-11-04 03:48:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:48:53,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 03:48:53,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:48:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 03:48:53,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:48:53,554 INFO L87 Difference]: Start difference. First operand 15242 states and 20856 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:48:56,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:58,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:59,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:00,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:01,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:03,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:04,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:15,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:18,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:21,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:24,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:26,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:49:26,776 INFO L93 Difference]: Finished difference Result 45005 states and 61003 transitions. [2021-11-04 03:49:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 03:49:26,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-04 03:49:26,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:49:26,831 INFO L225 Difference]: With dead ends: 45005 [2021-11-04 03:49:26,832 INFO L226 Difference]: Without dead ends: 29776 [2021-11-04 03:49:26,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.83ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:49:26,850 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1263 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 3940 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28361.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 3956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.23ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29223.77ms IncrementalHoareTripleChecker+Time [2021-11-04 03:49:26,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 71 Invalid, 3956 Unknown, 0 Unchecked, 9.23ms Time], IncrementalHoareTripleChecker [16 Valid, 3940 Invalid, 0 Unknown, 0 Unchecked, 29223.77ms Time] [2021-11-04 03:49:26,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29776 states. [2021-11-04 03:49:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29776 to 15313. [2021-11-04 03:49:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15313 states, 15032 states have (on average 1.369811069717935) internal successors, (20591), 15060 states have internal predecessors, (20591), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:49:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15313 states to 15313 states and 20927 transitions. [2021-11-04 03:49:28,861 INFO L78 Accepts]: Start accepts. Automaton has 15313 states and 20927 transitions. Word has length 143 [2021-11-04 03:49:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:49:28,861 INFO L470 AbstractCegarLoop]: Abstraction has 15313 states and 20927 transitions. [2021-11-04 03:49:28,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 15313 states and 20927 transitions. [2021-11-04 03:49:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 03:49:28,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:49:28,869 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 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] [2021-11-04 03:49:28,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-04 03:49:28,869 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:49:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:49:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1798951761, now seen corresponding path program 1 times [2021-11-04 03:49:28,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:49:28,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419335942] [2021-11-04 03:49:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:28,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:49:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 03:49:28,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:49:28,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419335942] [2021-11-04 03:49:28,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419335942] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:49:28,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50644608] [2021-11-04 03:49:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:28,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:49:28,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:49:28,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:49:28,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 03:49:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:29,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 03:49:29,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:49:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 03:49:29,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:49:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 03:49:29,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50644608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:49:29,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:49:29,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-04 03:49:29,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602997904] [2021-11-04 03:49:29,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:49:29,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 03:49:29,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:49:29,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 03:49:29,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:49:29,738 INFO L87 Difference]: Start difference. First operand 15313 states and 20927 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:33,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:35,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:37,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:43,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:46,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:49:46,757 INFO L93 Difference]: Finished difference Result 30787 states and 42100 transitions. [2021-11-04 03:49:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 03:49:46,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 03:49:46,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:49:46,786 INFO L225 Difference]: With dead ends: 30787 [2021-11-04 03:49:46,786 INFO L226 Difference]: Without dead ends: 15487 [2021-11-04 03:49:46,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 10.33ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:49:46,798 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14238.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.58ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14820.61ms IncrementalHoareTripleChecker+Time [2021-11-04 03:49:46,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 3016 Unknown, 0 Unchecked, 5.58ms Time], IncrementalHoareTripleChecker [4 Valid, 3011 Invalid, 1 Unknown, 0 Unchecked, 14820.61ms Time] [2021-11-04 03:49:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15487 states. [2021-11-04 03:49:48,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15487 to 15487. [2021-11-04 03:49:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15487 states, 15206 states have (on average 1.3655793765618836) internal successors, (20765), 15234 states have internal predecessors, (20765), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:49:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15487 states to 15487 states and 21101 transitions. [2021-11-04 03:49:48,728 INFO L78 Accepts]: Start accepts. Automaton has 15487 states and 21101 transitions. Word has length 144 [2021-11-04 03:49:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:49:48,728 INFO L470 AbstractCegarLoop]: Abstraction has 15487 states and 21101 transitions. [2021-11-04 03:49:48,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15487 states and 21101 transitions. [2021-11-04 03:49:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-04 03:49:48,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:49:48,735 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 3, 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] [2021-11-04 03:49:48,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-04 03:49:48,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-04 03:49:48,943 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:49:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:49:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash -166876600, now seen corresponding path program 1 times [2021-11-04 03:49:48,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:49:48,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149401602] [2021-11-04 03:49:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:48,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:49:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-04 03:49:49,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:49:49,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149401602] [2021-11-04 03:49:49,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149401602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:49:49,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:49:49,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:49:49,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228694165] [2021-11-04 03:49:49,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:49:49,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:49:49,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:49:49,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:49:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:49:49,038 INFO L87 Difference]: Start difference. First operand 15487 states and 21101 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:49:53,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:49:58,048 INFO L93 Difference]: Finished difference Result 31057 states and 42331 transitions. [2021-11-04 03:49:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:49:58,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-04 03:49:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:49:58,084 INFO L225 Difference]: With dead ends: 31057 [2021-11-04 03:49:58,084 INFO L226 Difference]: Without dead ends: 15583 [2021-11-04 03:49:58,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:49:58,107 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6555.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6880.40ms IncrementalHoareTripleChecker+Time [2021-11-04 03:49:58,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 1506 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [2 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 6880.40ms Time] [2021-11-04 03:49:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15583 states. [2021-11-04 03:50:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15583 to 15535. [2021-11-04 03:50:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15535 states, 15254 states have (on average 1.3644290022289236) internal successors, (20813), 15282 states have internal predecessors, (20813), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:50:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15535 states to 15535 states and 21149 transitions. [2021-11-04 03:50:00,110 INFO L78 Accepts]: Start accepts. Automaton has 15535 states and 21149 transitions. Word has length 144 [2021-11-04 03:50:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:50:00,111 INFO L470 AbstractCegarLoop]: Abstraction has 15535 states and 21149 transitions. [2021-11-04 03:50:00,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:50:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 15535 states and 21149 transitions. [2021-11-04 03:50:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-04 03:50:00,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:50:00,117 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 3, 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] [2021-11-04 03:50:00,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-04 03:50:00,118 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:50:00,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:50:00,118 INFO L85 PathProgramCache]: Analyzing trace with hash 913126508, now seen corresponding path program 1 times [2021-11-04 03:50:00,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:50:00,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124470160] [2021-11-04 03:50:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:50:00,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:50:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:50:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-04 03:50:00,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:50:00,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124470160] [2021-11-04 03:50:00,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124470160] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:50:00,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246482676] [2021-11-04 03:50:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:50:00,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:50:00,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:50:00,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:50:00,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 03:50:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:50:00,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 03:50:00,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:50:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-04 03:50:00,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:50:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-04 03:50:01,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246482676] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:50:01,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:50:01,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2021-11-04 03:50:01,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143670381] [2021-11-04 03:50:01,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:50:01,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-04 03:50:01,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:50:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-04 03:50:01,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-04 03:50:01,010 INFO L87 Difference]: Start difference. First operand 15535 states and 21149 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:50:04,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:06,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:08,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:12,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:20,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:28,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:31,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:35,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:36,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:50:39,973 INFO L93 Difference]: Finished difference Result 37948 states and 51629 transitions. [2021-11-04 03:50:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-04 03:50:39,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-04 03:50:39,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:50:40,012 INFO L225 Difference]: With dead ends: 37948 [2021-11-04 03:50:40,012 INFO L226 Difference]: Without dead ends: 22426 [2021-11-04 03:50:40,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 63.00ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-04 03:50:40,032 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 551 mSDsluCounter, 4392 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34687.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 5719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.23ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35786.53ms IncrementalHoareTripleChecker+Time [2021-11-04 03:50:40,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 104 Invalid, 5719 Unknown, 0 Unchecked, 11.23ms Time], IncrementalHoareTripleChecker [44 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 35786.53ms Time] [2021-11-04 03:50:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22426 states. [2021-11-04 03:50:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22426 to 15844. [2021-11-04 03:50:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15844 states, 15563 states have (on average 1.357193343185761) internal successors, (21122), 15591 states have internal predecessors, (21122), 168 states have call successors, (168), 112 states have call predecessors, (168), 112 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-04 03:50:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15844 states to 15844 states and 21458 transitions. [2021-11-04 03:50:42,108 INFO L78 Accepts]: Start accepts. Automaton has 15844 states and 21458 transitions. Word has length 146 [2021-11-04 03:50:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:50:42,109 INFO L470 AbstractCegarLoop]: Abstraction has 15844 states and 21458 transitions. [2021-11-04 03:50:42,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:50:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 15844 states and 21458 transitions. [2021-11-04 03:50:42,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-04 03:50:42,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:50:42,117 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 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] [2021-11-04 03:50:42,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 03:50:42,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:50:42,318 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:50:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:50:42,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1093552515, now seen corresponding path program 2 times [2021-11-04 03:50:42,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:50:42,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52797580] [2021-11-04 03:50:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:50:42,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:50:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:50:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-04 03:50:42,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:50:42,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52797580] [2021-11-04 03:50:42,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52797580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:50:42,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132816898] [2021-11-04 03:50:42,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 03:50:42,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:50:42,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:50:42,410 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:50:42,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 03:50:44,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 03:50:44,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 03:50:44,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 03:50:44,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:50:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 03:50:45,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:50:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 03:50:45,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132816898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:50:45,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:50:45,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-11-04 03:50:45,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379403160] [2021-11-04 03:50:45,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:50:45,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-04 03:50:45,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:50:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-04 03:50:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-11-04 03:50:45,316 INFO L87 Difference]: Start difference. First operand 15844 states and 21458 transitions. Second operand has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:50:46,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:51,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:53,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:57,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:59,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:01,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:03,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:04,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:09,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:16,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:51:29,292 INFO L93 Difference]: Finished difference Result 57787 states and 78638 transitions. [2021-11-04 03:51:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-04 03:51:29,292 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-04 03:51:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:51:29,370 INFO L225 Difference]: With dead ends: 57787 [2021-11-04 03:51:29,370 INFO L226 Difference]: Without dead ends: 41797 [2021-11-04 03:51:29,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 185.52ms TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2021-11-04 03:51:29,392 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1466 mSDsluCounter, 6451 mSDsCounter, 0 mSdLazyCounter, 7901 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36663.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 7945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.52ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7901 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38047.32ms IncrementalHoareTripleChecker+Time [2021-11-04 03:51:29,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 161 Invalid, 7945 Unknown, 0 Unchecked, 17.52ms Time], IncrementalHoareTripleChecker [43 Valid, 7901 Invalid, 1 Unknown, 0 Unchecked, 38047.32ms Time] [2021-11-04 03:51:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41797 states. [2021-11-04 03:51:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41797 to 34755. [2021-11-04 03:51:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34755 states, 34154 states have (on average 1.350617790009955) internal successors, (46129), 34214 states have internal predecessors, (46129), 360 states have call successors, (360), 240 states have call predecessors, (360), 240 states have return successors, (360), 360 states have call predecessors, (360), 360 states have call successors, (360) [2021-11-04 03:51:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34755 states to 34755 states and 46849 transitions. [2021-11-04 03:51:34,036 INFO L78 Accepts]: Start accepts. Automaton has 34755 states and 46849 transitions. Word has length 150 [2021-11-04 03:51:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:51:34,036 INFO L470 AbstractCegarLoop]: Abstraction has 34755 states and 46849 transitions. [2021-11-04 03:51:34,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:51:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 34755 states and 46849 transitions. [2021-11-04 03:51:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-04 03:51:34,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:51:34,046 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 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] [2021-11-04 03:51:34,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 03:51:34,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:51:34,247 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:51:34,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:51:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2093220827, now seen corresponding path program 2 times [2021-11-04 03:51:34,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:51:34,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623476554] [2021-11-04 03:51:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:51:34,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:51:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:51:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-04 03:51:34,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:51:34,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623476554] [2021-11-04 03:51:34,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623476554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:51:34,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613778298] [2021-11-04 03:51:34,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 03:51:34,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:51:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:51:34,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:51:34,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 03:51:36,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 03:51:36,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 03:51:36,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-04 03:51:36,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:51:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-04 03:51:37,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:51:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-04 03:51:37,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613778298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:51:37,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:51:37,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2021-11-04 03:51:37,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938256271] [2021-11-04 03:51:37,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:51:37,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-04 03:51:37,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:51:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-04 03:51:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-11-04 03:51:37,303 INFO L87 Difference]: Start difference. First operand 34755 states and 46849 transitions. Second operand has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:51:38,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:41,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:42,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:43,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:45,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:51,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:52,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:51:58,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:52:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:52:14,084 INFO L93 Difference]: Finished difference Result 100841 states and 135983 transitions. [2021-11-04 03:52:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-04 03:52:14,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-04 03:52:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:52:14,220 INFO L225 Difference]: With dead ends: 100841 [2021-11-04 03:52:14,220 INFO L226 Difference]: Without dead ends: 66099 [2021-11-04 03:52:14,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 288.42ms TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2021-11-04 03:52:14,265 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2898 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 4312 mSolverCounterSat, 243 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25826.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 4556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.91ms SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4312 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26771.65ms IncrementalHoareTripleChecker+Time [2021-11-04 03:52:14,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2900 Valid, 71 Invalid, 4556 Unknown, 0 Unchecked, 12.91ms Time], IncrementalHoareTripleChecker [243 Valid, 4312 Invalid, 1 Unknown, 0 Unchecked, 26771.65ms Time] [2021-11-04 03:52:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66099 states. [2021-11-04 03:52:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66099 to 35854. [2021-11-04 03:52:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35854 states, 35253 states have (on average 1.3396874024905683) internal successors, (47228), 35313 states have internal predecessors, (47228), 360 states have call successors, (360), 240 states have call predecessors, (360), 240 states have return successors, (360), 360 states have call predecessors, (360), 360 states have call successors, (360) [2021-11-04 03:52:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35854 states to 35854 states and 47948 transitions. [2021-11-04 03:52:19,705 INFO L78 Accepts]: Start accepts. Automaton has 35854 states and 47948 transitions. Word has length 151 [2021-11-04 03:52:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:52:19,705 INFO L470 AbstractCegarLoop]: Abstraction has 35854 states and 47948 transitions. [2021-11-04 03:52:19,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:52:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 35854 states and 47948 transitions. [2021-11-04 03:52:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-04 03:52:19,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:52:19,715 INFO L514 BasicCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 4, 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] [2021-11-04 03:52:19,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 03:52:19,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:52:19,919 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:52:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:52:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1583972882, now seen corresponding path program 3 times [2021-11-04 03:52:19,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:52:19,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210790485] [2021-11-04 03:52:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:52:19,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:52:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:52:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 50 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-04 03:52:20,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:52:20,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210790485] [2021-11-04 03:52:20,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210790485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:52:20,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519418670] [2021-11-04 03:52:20,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 03:52:20,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:52:20,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:52:20,186 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:52:20,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process Killed by 15