./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 5f08f0f0 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-5f08f0f [2021-11-05 16:13:52,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:13:52,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:13:52,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:13:52,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:13:52,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:13:52,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:13:52,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:13:52,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:13:52,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:13:52,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:13:52,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:13:52,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:13:52,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:13:52,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:13:52,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:13:52,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:13:52,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:13:52,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:13:52,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:13:52,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:13:52,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:13:52,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:13:52,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:13:52,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:13:52,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:13:52,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:13:52,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:13:52,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:13:52,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:13:52,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:13:52,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:13:52,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:13:52,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:13:52,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:13:52,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:13:52,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:13:52,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:13:52,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:13:52,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:13:52,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:13:52,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:13:52,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:13:52,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:13:52,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:13:52,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:13:52,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:13:52,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:13:52,670 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:13:52,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:13:52,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:13:52,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:13:52,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:13:52,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:13:52,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:13:52,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:13:52,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:13:52,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:13:52,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:13:52,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:13:52,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:13:52,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:13:52,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:13:52,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:13:52,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:13:52,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:13:52,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:13:52,673 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:13:52,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:13:52,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:13:52,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:13:52,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 [2021-11-05 16:13:52,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:13:52,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:13:52,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:13:52,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:13:52,966 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:13:52,967 INFO L432 ainManager$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 [2021-11-05 16:13:53,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5eb82618/c134f51bfc09402c8c6d863920f58cb7/FLAG249c4b10f [2021-11-05 16:13:53,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:13:53,568 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 [2021-11-05 16:13:53,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5eb82618/c134f51bfc09402c8c6d863920f58cb7/FLAG249c4b10f [2021-11-05 16:13:53,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5eb82618/c134f51bfc09402c8c6d863920f58cb7 [2021-11-05 16:13:53,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:13:53,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:13:53,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:13:53,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:13:53,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:13:53,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:13:53" (1/1) ... [2021-11-05 16:13:53,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236654f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:53, skipping insertion in model container [2021-11-05 16:13:53,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:13:53" (1/1) ... [2021-11-05 16:13:53,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:13:53,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:13:54,447 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] [2021-11-05 16:13:54,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:13:54,750 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:13:54,838 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] [2021-11-05 16:13:54,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:13:54,994 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:13:54,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54 WrapperNode [2021-11-05 16:13:54,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:13:54,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:13:54,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:13:54,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:13:55,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:13:55,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:13:55,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:13:55,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:13:55,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:13:55,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:13:55,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:13:55,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:13:55,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (1/1) ... [2021-11-05 16:13:55,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:13:55,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:55,349 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) [2021-11-05 16:13:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:13:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-11-05 16:13:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-11-05 16:13:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:13:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:13:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:13:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 16:13:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 16:13:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2021-11-05 16:13:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2021-11-05 16:13:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:13:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:13:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:13:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:13:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:13:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:13:55,367 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 [2021-11-05 16:14:00,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:14:00,534 INFO L299 CfgBuilder]: Removed 561 assume(true) statements. [2021-11-05 16:14:00,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:14:00 BoogieIcfgContainer [2021-11-05 16:14:00,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:14:00,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:14:00,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:14:00,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:14:00,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:13:53" (1/3) ... [2021-11-05 16:14:00,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db27545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:14:00, skipping insertion in model container [2021-11-05 16:14:00,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:54" (2/3) ... [2021-11-05 16:14:00,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db27545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:14:00, skipping insertion in model container [2021-11-05 16:14:00,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:14:00" (3/3) ... [2021-11-05 16:14:00,544 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 [2021-11-05 16:14:00,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:14:00,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 16:14:00,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:14:00,596 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 [2021-11-05 16:14:00,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 16:14:00,617 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) [2021-11-05 16:14:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-05 16:14:00,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:00,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:00,622 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)] === [2021-11-05 16:14:00,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash 812919680, now seen corresponding path program 1 times [2021-11-05 16:14:00,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:00,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837949081] [2021-11-05 16:14:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:00,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:00,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:00,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837949081] [2021-11-05 16:14:00,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837949081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:00,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:00,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:00,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736464070] [2021-11-05 16:14:00,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:00,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:00,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:00,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:00,960 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) [2021-11-05 16:14:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:01,594 INFO L93 Difference]: Finished difference Result 1716 states and 2450 transitions. [2021-11-05 16:14:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:01,600 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 [2021-11-05 16:14:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:01,616 INFO L225 Difference]: With dead ends: 1716 [2021-11-05 16:14:01,619 INFO L226 Difference]: Without dead ends: 1113 [2021-11-05 16:14:01,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:01,633 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 766 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 470.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.08ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 513.29ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:01,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1616 Invalid, 15 Unknown, 0 Unchecked, 12.08ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 513.29ms Time] [2021-11-05 16:14:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-05 16:14:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2021-11-05 16:14:01,716 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) [2021-11-05 16:14:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1546 transitions. [2021-11-05 16:14:01,721 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1546 transitions. Word has length 17 [2021-11-05 16:14:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:01,721 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1546 transitions. [2021-11-05 16:14:01,722 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) [2021-11-05 16:14:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1546 transitions. [2021-11-05 16:14:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 16:14:01,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:01,726 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] [2021-11-05 16:14:01,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:14:01,726 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)] === [2021-11-05 16:14:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 366683969, now seen corresponding path program 1 times [2021-11-05 16:14:01,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:01,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423490036] [2021-11-05 16:14:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:01,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:01,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:01,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423490036] [2021-11-05 16:14:01,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423490036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:01,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:01,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:14:01,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828955913] [2021-11-05 16:14:01,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:01,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:01,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:01,900 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) [2021-11-05 16:14:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:01,995 INFO L93 Difference]: Finished difference Result 3311 states and 4607 transitions. [2021-11-05 16:14:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:01,995 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 [2021-11-05 16:14:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:02,002 INFO L225 Difference]: With dead ends: 3311 [2021-11-05 16:14:02,002 INFO L226 Difference]: Without dead ends: 2211 [2021-11-05 16:14:02,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,005 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 768 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.79ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:02,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 1550 Invalid, 45 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 42.79ms Time] [2021-11-05 16:14:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-11-05 16:14:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2199. [2021-11-05 16:14:02,048 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) [2021-11-05 16:14:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3054 transitions. [2021-11-05 16:14:02,055 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3054 transitions. Word has length 24 [2021-11-05 16:14:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:02,055 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 3054 transitions. [2021-11-05 16:14:02,055 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) [2021-11-05 16:14:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3054 transitions. [2021-11-05 16:14:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-05 16:14:02,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:02,057 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] [2021-11-05 16:14:02,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:14:02,057 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)] === [2021-11-05 16:14:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1517698873, now seen corresponding path program 1 times [2021-11-05 16:14:02,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:02,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733114462] [2021-11-05 16:14:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:02,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:02,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:02,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733114462] [2021-11-05 16:14:02,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733114462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:02,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:02,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:14:02,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071916874] [2021-11-05 16:14:02,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:02,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:02,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:02,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,150 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) [2021-11-05 16:14:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:02,204 INFO L93 Difference]: Finished difference Result 2199 states and 3054 transitions. [2021-11-05 16:14:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:02,205 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 [2021-11-05 16:14:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:02,212 INFO L225 Difference]: With dead ends: 2199 [2021-11-05 16:14:02,212 INFO L226 Difference]: Without dead ends: 2197 [2021-11-05 16:14:02,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,215 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 774 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.90ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:02,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 796 Invalid, 1 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.90ms Time] [2021-11-05 16:14:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2021-11-05 16:14:02,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2197. [2021-11-05 16:14:02,286 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) [2021-11-05 16:14:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3052 transitions. [2021-11-05 16:14:02,292 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3052 transitions. Word has length 25 [2021-11-05 16:14:02,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:02,293 INFO L470 AbstractCegarLoop]: Abstraction has 2197 states and 3052 transitions. [2021-11-05 16:14:02,293 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) [2021-11-05 16:14:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3052 transitions. [2021-11-05 16:14:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-05 16:14:02,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:02,295 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] [2021-11-05 16:14:02,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:14:02,296 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)] === [2021-11-05 16:14:02,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:02,297 INFO L85 PathProgramCache]: Analyzing trace with hash 195975179, now seen corresponding path program 1 times [2021-11-05 16:14:02,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:02,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176138377] [2021-11-05 16:14:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:02,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:02,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:02,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176138377] [2021-11-05 16:14:02,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176138377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:02,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:02,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:14:02,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033656344] [2021-11-05 16:14:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:02,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:02,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:02,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:02,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,403 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) [2021-11-05 16:14:02,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:02,452 INFO L93 Difference]: Finished difference Result 2197 states and 3052 transitions. [2021-11-05 16:14:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:02,453 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 [2021-11-05 16:14:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:02,460 INFO L225 Difference]: With dead ends: 2197 [2021-11-05 16:14:02,461 INFO L226 Difference]: Without dead ends: 2195 [2021-11-05 16:14:02,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,464 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 771 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.87ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:02,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 794 Invalid, 1 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.87ms Time] [2021-11-05 16:14:02,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-11-05 16:14:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2195. [2021-11-05 16:14:02,562 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) [2021-11-05 16:14:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3050 transitions. [2021-11-05 16:14:02,570 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3050 transitions. Word has length 26 [2021-11-05 16:14:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:02,571 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 3050 transitions. [2021-11-05 16:14:02,571 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) [2021-11-05 16:14:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3050 transitions. [2021-11-05 16:14:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 16:14:02,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:02,572 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] [2021-11-05 16:14:02,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:14:02,572 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)] === [2021-11-05 16:14:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1780263249, now seen corresponding path program 1 times [2021-11-05 16:14:02,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:02,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048530861] [2021-11-05 16:14:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:02,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:02,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:02,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048530861] [2021-11-05 16:14:02,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048530861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:02,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:02,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:14:02,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102735668] [2021-11-05 16:14:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:02,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:02,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:02,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,664 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) [2021-11-05 16:14:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:02,713 INFO L93 Difference]: Finished difference Result 2195 states and 3050 transitions. [2021-11-05 16:14:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:02,714 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 [2021-11-05 16:14:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:02,720 INFO L225 Difference]: With dead ends: 2195 [2021-11-05 16:14:02,721 INFO L226 Difference]: Without dead ends: 2193 [2021-11-05 16:14:02,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,726 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 768 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.94ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:02,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 792 Invalid, 1 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.94ms Time] [2021-11-05 16:14:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-11-05 16:14:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2021-11-05 16:14:02,780 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) [2021-11-05 16:14:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3048 transitions. [2021-11-05 16:14:02,787 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3048 transitions. Word has length 27 [2021-11-05 16:14:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:02,788 INFO L470 AbstractCegarLoop]: Abstraction has 2193 states and 3048 transitions. [2021-11-05 16:14:02,792 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) [2021-11-05 16:14:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3048 transitions. [2021-11-05 16:14:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 16:14:02,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:02,793 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] [2021-11-05 16:14:02,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:14:02,793 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)] === [2021-11-05 16:14:02,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash -646414123, now seen corresponding path program 1 times [2021-11-05 16:14:02,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:02,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623611312] [2021-11-05 16:14:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:02,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:02,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:02,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623611312] [2021-11-05 16:14:02,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623611312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:02,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:02,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:14:02,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704156713] [2021-11-05 16:14:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:02,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:02,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,872 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) [2021-11-05 16:14:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:02,917 INFO L93 Difference]: Finished difference Result 2193 states and 3048 transitions. [2021-11-05 16:14:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:02,918 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 [2021-11-05 16:14:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:02,925 INFO L225 Difference]: With dead ends: 2193 [2021-11-05 16:14:02,925 INFO L226 Difference]: Without dead ends: 2184 [2021-11-05 16:14:02,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:02,927 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 765 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:02,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 16:14:02,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2021-11-05 16:14:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2184. [2021-11-05 16:14:02,978 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) [2021-11-05 16:14:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3036 transitions. [2021-11-05 16:14:02,984 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3036 transitions. Word has length 28 [2021-11-05 16:14:02,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:02,984 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 3036 transitions. [2021-11-05 16:14:02,984 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) [2021-11-05 16:14:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3036 transitions. [2021-11-05 16:14:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 16:14:02,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:02,987 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] [2021-11-05 16:14:02,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:14:02,987 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)] === [2021-11-05 16:14:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash 593395099, now seen corresponding path program 1 times [2021-11-05 16:14:02,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:02,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198721015] [2021-11-05 16:14:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:02,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:03,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:03,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198721015] [2021-11-05 16:14:03,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198721015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:03,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:03,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:03,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017696073] [2021-11-05 16:14:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:03,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:03,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:03,040 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) [2021-11-05 16:14:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:03,161 INFO L93 Difference]: Finished difference Result 4886 states and 6761 transitions. [2021-11-05 16:14:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:03,162 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 [2021-11-05 16:14:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:03,169 INFO L225 Difference]: With dead ends: 4886 [2021-11-05 16:14:03,169 INFO L226 Difference]: Without dead ends: 2715 [2021-11-05 16:14:03,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:03,172 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 195 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.49ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:03,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 1548 Invalid, 20 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 29.49ms Time] [2021-11-05 16:14:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2021-11-05 16:14:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2710. [2021-11-05 16:14:03,228 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) [2021-11-05 16:14:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3732 transitions. [2021-11-05 16:14:03,234 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3732 transitions. Word has length 52 [2021-11-05 16:14:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:03,234 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 3732 transitions. [2021-11-05 16:14:03,234 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) [2021-11-05 16:14:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3732 transitions. [2021-11-05 16:14:03,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 16:14:03,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:03,236 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] [2021-11-05 16:14:03,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:14:03,237 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)] === [2021-11-05 16:14:03,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:03,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1400283468, now seen corresponding path program 1 times [2021-11-05 16:14:03,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:03,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966864093] [2021-11-05 16:14:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:03,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:14:03,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:03,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966864093] [2021-11-05 16:14:03,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966864093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:03,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:03,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:03,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179696387] [2021-11-05 16:14:03,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:03,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:03,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:03,301 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) [2021-11-05 16:14:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:04,439 INFO L93 Difference]: Finished difference Result 5986 states and 8241 transitions. [2021-11-05 16:14:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:04,439 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 [2021-11-05 16:14:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:04,450 INFO L225 Difference]: With dead ends: 5986 [2021-11-05 16:14:04,450 INFO L226 Difference]: Without dead ends: 3289 [2021-11-05 16:14:04,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:04,456 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 200 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1007.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1043.34ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:04,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1724 Invalid, 30 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1043.34ms Time] [2021-11-05 16:14:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-11-05 16:14:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3284. [2021-11-05 16:14:04,532 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) [2021-11-05 16:14:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4496 transitions. [2021-11-05 16:14:04,543 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4496 transitions. Word has length 62 [2021-11-05 16:14:04,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:04,544 INFO L470 AbstractCegarLoop]: Abstraction has 3284 states and 4496 transitions. [2021-11-05 16:14:04,544 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) [2021-11-05 16:14:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4496 transitions. [2021-11-05 16:14:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 16:14:04,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:04,546 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] [2021-11-05 16:14:04,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:14:04,547 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)] === [2021-11-05 16:14:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1202855944, now seen corresponding path program 1 times [2021-11-05 16:14:04,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:04,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048054507] [2021-11-05 16:14:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:04,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:14:04,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:04,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048054507] [2021-11-05 16:14:04,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048054507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:04,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:04,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:04,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696844079] [2021-11-05 16:14:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:04,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:04,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:04,607 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) [2021-11-05 16:14:05,958 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 [] [2021-11-05 16:14:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:06,167 INFO L93 Difference]: Finished difference Result 7698 states and 10569 transitions. [2021-11-05 16:14:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:06,168 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 [2021-11-05 16:14:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:06,184 INFO L225 Difference]: With dead ends: 7698 [2021-11-05 16:14:06,184 INFO L226 Difference]: Without dead ends: 4427 [2021-11-05 16:14:06,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:06,190 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 559 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1367.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1411.17ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:06,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 1590 Invalid, 31 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1411.17ms Time] [2021-11-05 16:14:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2021-11-05 16:14:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4422. [2021-11-05 16:14:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 4341 states have (on average 1.373876986869385) internal successors, (5964), 4349 states have internal predecessors, (5964), 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) [2021-11-05 16:14:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 6060 transitions. [2021-11-05 16:14:06,307 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 6060 transitions. Word has length 74 [2021-11-05 16:14:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:06,308 INFO L470 AbstractCegarLoop]: Abstraction has 4422 states and 6060 transitions. [2021-11-05 16:14:06,308 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) [2021-11-05 16:14:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 6060 transitions. [2021-11-05 16:14:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 16:14:06,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:06,310 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] [2021-11-05 16:14:06,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 16:14:06,311 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)] === [2021-11-05 16:14:06,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash 38724080, now seen corresponding path program 1 times [2021-11-05 16:14:06,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:06,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937058509] [2021-11-05 16:14:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:06,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 16:14:06,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:06,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937058509] [2021-11-05 16:14:06,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937058509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:06,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047473487] [2021-11-05 16:14:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:06,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:06,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:06,392 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) [2021-11-05 16:14:06,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:14:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:06,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:14:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 16:14:06,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:14:06,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047473487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:06,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:14:06,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-05 16:14:06,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906614829] [2021-11-05 16:14:06,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:06,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:06,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:06,983 INFO L87 Difference]: Start difference. First operand 4422 states and 6060 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) [2021-11-05 16:14:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:08,055 INFO L93 Difference]: Finished difference Result 13241 states and 18150 transitions. [2021-11-05 16:14:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:14:08,056 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 [2021-11-05 16:14:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:08,118 INFO L225 Difference]: With dead ends: 13241 [2021-11-05 16:14:08,119 INFO L226 Difference]: Without dead ends: 13236 [2021-11-05 16:14:08,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:08,126 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 2032 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 649.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 706.58ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:08,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2032 Valid, 2529 Invalid, 58 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [21 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 706.58ms Time] [2021-11-05 16:14:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13236 states. [2021-11-05 16:14:08,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13236 to 13046. [2021-11-05 16:14:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13046 states, 12805 states have (on average 1.3771183131589222) internal successors, (17634), 12829 states have internal predecessors, (17634), 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) [2021-11-05 16:14:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13046 states to 13046 states and 17922 transitions. [2021-11-05 16:14:08,571 INFO L78 Accepts]: Start accepts. Automaton has 13046 states and 17922 transitions. Word has length 76 [2021-11-05 16:14:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:08,572 INFO L470 AbstractCegarLoop]: Abstraction has 13046 states and 17922 transitions. [2021-11-05 16:14:08,573 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) [2021-11-05 16:14:08,573 INFO L276 IsEmpty]: Start isEmpty. Operand 13046 states and 17922 transitions. [2021-11-05 16:14:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 16:14:08,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:08,580 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] [2021-11-05 16:14:08,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 16:14:08,800 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 [2021-11-05 16:14:08,800 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)] === [2021-11-05 16:14:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash -483700015, now seen corresponding path program 1 times [2021-11-05 16:14:08,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:08,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133149776] [2021-11-05 16:14:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:08,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:08,920 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 16:14:08,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:08,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133149776] [2021-11-05 16:14:08,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133149776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:08,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353014406] [2021-11-05 16:14:08,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:08,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:08,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:08,936 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) [2021-11-05 16:14:08,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 16:14:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:09,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:14:09,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:14:09,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:14:09,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353014406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:09,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:14:09,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-05 16:14:09,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396440662] [2021-11-05 16:14:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:09,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:09,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:14:09,538 INFO L87 Difference]: Start difference. First operand 13046 states and 17922 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) [2021-11-05 16:14:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:10,233 INFO L93 Difference]: Finished difference Result 19833 states and 27266 transitions. [2021-11-05 16:14:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:10,234 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 [2021-11-05 16:14:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:10,253 INFO L225 Difference]: With dead ends: 19833 [2021-11-05 16:14:10,253 INFO L226 Difference]: Without dead ends: 6433 [2021-11-05 16:14:10,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 23.49ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:14:10,270 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 711 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 410.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 432.58ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:10,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 1137 Invalid, 11 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 432.58ms Time] [2021-11-05 16:14:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2021-11-05 16:14:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 6433. [2021-11-05 16:14:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6433 states, 6312 states have (on average 1.375) internal successors, (8679), 6324 states have internal predecessors, (8679), 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) [2021-11-05 16:14:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6433 states to 6433 states and 8823 transitions. [2021-11-05 16:14:10,438 INFO L78 Accepts]: Start accepts. Automaton has 6433 states and 8823 transitions. Word has length 83 [2021-11-05 16:14:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:10,439 INFO L470 AbstractCegarLoop]: Abstraction has 6433 states and 8823 transitions. [2021-11-05 16:14:10,439 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) [2021-11-05 16:14:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6433 states and 8823 transitions. [2021-11-05 16:14:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 16:14:10,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:10,447 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] [2021-11-05 16:14:10,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 16:14:10,669 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 [2021-11-05 16:14:10,670 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)] === [2021-11-05 16:14:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1092841713, now seen corresponding path program 1 times [2021-11-05 16:14:10,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:10,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044128224] [2021-11-05 16:14:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:10,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-05 16:14:10,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:10,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044128224] [2021-11-05 16:14:10,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044128224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:10,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:10,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:10,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440691766] [2021-11-05 16:14:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:10,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:10,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:10,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:10,732 INFO L87 Difference]: Start difference. First operand 6433 states and 8823 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) [2021-11-05 16:14:10,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:10,996 INFO L93 Difference]: Finished difference Result 16645 states and 23003 transitions. [2021-11-05 16:14:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:10,996 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 [2021-11-05 16:14:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:11,018 INFO L225 Difference]: With dead ends: 16645 [2021-11-05 16:14:11,019 INFO L226 Difference]: Without dead ends: 10210 [2021-11-05 16:14:11,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:11,031 INFO L933 BasicCegarLoop]: 1366 mSDtfsCounter, 615 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.47ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:11,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 2123 Invalid, 12 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 22.47ms Time] [2021-11-05 16:14:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-11-05 16:14:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 10159. [2021-11-05 16:14:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10159 states, 9918 states have (on average 1.3907037709215568) internal successors, (13793), 9942 states have internal predecessors, (13793), 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) [2021-11-05 16:14:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10159 states to 10159 states and 14081 transitions. [2021-11-05 16:14:11,270 INFO L78 Accepts]: Start accepts. Automaton has 10159 states and 14081 transitions. Word has length 86 [2021-11-05 16:14:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:11,270 INFO L470 AbstractCegarLoop]: Abstraction has 10159 states and 14081 transitions. [2021-11-05 16:14:11,271 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) [2021-11-05 16:14:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10159 states and 14081 transitions. [2021-11-05 16:14:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 16:14:11,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:11,280 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] [2021-11-05 16:14:11,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 16:14:11,280 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)] === [2021-11-05 16:14:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1975174479, now seen corresponding path program 2 times [2021-11-05 16:14:11,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:11,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341063289] [2021-11-05 16:14:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:11,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:14:11,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:11,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341063289] [2021-11-05 16:14:11,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341063289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:11,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:11,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:11,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569026011] [2021-11-05 16:14:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:11,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:11,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:11,333 INFO L87 Difference]: Start difference. First operand 10159 states and 14081 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) [2021-11-05 16:14:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:12,047 INFO L93 Difference]: Finished difference Result 21653 states and 30099 transitions. [2021-11-05 16:14:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:12,048 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 [2021-11-05 16:14:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:12,082 INFO L225 Difference]: With dead ends: 21653 [2021-11-05 16:14:12,082 INFO L226 Difference]: Without dead ends: 11507 [2021-11-05 16:14:12,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:12,102 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 734 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 377.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 401.65ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:12,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1443 Invalid, 16 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 401.65ms Time] [2021-11-05 16:14:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11507 states. [2021-11-05 16:14:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11507 to 11227. [2021-11-05 16:14:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11227 states, 10946 states have (on average 1.3945733601315549) internal successors, (15265), 10974 states have internal predecessors, (15265), 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) [2021-11-05 16:14:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11227 states to 11227 states and 15601 transitions. [2021-11-05 16:14:12,413 INFO L78 Accepts]: Start accepts. Automaton has 11227 states and 15601 transitions. Word has length 86 [2021-11-05 16:14:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:12,413 INFO L470 AbstractCegarLoop]: Abstraction has 11227 states and 15601 transitions. [2021-11-05 16:14:12,413 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) [2021-11-05 16:14:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 11227 states and 15601 transitions. [2021-11-05 16:14:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 16:14:12,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:12,417 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] [2021-11-05 16:14:12,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 16:14:12,418 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)] === [2021-11-05 16:14:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -401392373, now seen corresponding path program 1 times [2021-11-05 16:14:12,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:12,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618352960] [2021-11-05 16:14:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:12,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:14:12,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:12,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618352960] [2021-11-05 16:14:12,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618352960] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:12,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318043098] [2021-11-05 16:14:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:12,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:12,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:12,497 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) [2021-11-05 16:14:12,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 16:14:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:12,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:14:12,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:14:13,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:14:13,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318043098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:13,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:14:13,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 16:14:13,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22990830] [2021-11-05 16:14:13,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:13,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:13,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:13,040 INFO L87 Difference]: Start difference. First operand 11227 states and 15601 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) [2021-11-05 16:14:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:14,220 INFO L93 Difference]: Finished difference Result 21845 states and 30398 transitions. [2021-11-05 16:14:14,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:14,221 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 [2021-11-05 16:14:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:14,246 INFO L225 Difference]: With dead ends: 21845 [2021-11-05 16:14:14,246 INFO L226 Difference]: Without dead ends: 10808 [2021-11-05 16:14:14,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.60ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:14,268 INFO L933 BasicCegarLoop]: 1165 mSDtfsCounter, 565 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 885.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 920.70ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:14,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1745 Invalid, 28 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 920.70ms Time] [2021-11-05 16:14:14,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10808 states. [2021-11-05 16:14:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10808 to 10803. [2021-11-05 16:14:14,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10803 states, 10522 states have (on average 1.3928910853449914) internal successors, (14656), 10550 states have internal predecessors, (14656), 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) [2021-11-05 16:14:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10803 states to 10803 states and 14992 transitions. [2021-11-05 16:14:14,528 INFO L78 Accepts]: Start accepts. Automaton has 10803 states and 14992 transitions. Word has length 88 [2021-11-05 16:14:14,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:14,528 INFO L470 AbstractCegarLoop]: Abstraction has 10803 states and 14992 transitions. [2021-11-05 16:14:14,529 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) [2021-11-05 16:14:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 10803 states and 14992 transitions. [2021-11-05 16:14:14,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 16:14:14,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:14,533 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] [2021-11-05 16:14:14,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 16:14:14,751 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 [2021-11-05 16:14:14,752 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)] === [2021-11-05 16:14:14,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2088136589, now seen corresponding path program 1 times [2021-11-05 16:14:14,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:14,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109307978] [2021-11-05 16:14:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:14,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 16:14:14,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:14,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109307978] [2021-11-05 16:14:14,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109307978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:14,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:14,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:14:14,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164438089] [2021-11-05 16:14:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:14,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:14,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:14,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:14,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:14:14,820 INFO L87 Difference]: Start difference. First operand 10803 states and 14992 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) [2021-11-05 16:14:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:15,300 INFO L93 Difference]: Finished difference Result 32188 states and 44536 transitions. [2021-11-05 16:14:15,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:14:15,301 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 [2021-11-05 16:14:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:15,351 INFO L225 Difference]: With dead ends: 32188 [2021-11-05 16:14:15,351 INFO L226 Difference]: Without dead ends: 21575 [2021-11-05 16:14:15,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:15,377 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 1170 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.66ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.17ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:15,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 2523 Invalid, 14 Unknown, 0 Unchecked, 3.66ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 26.17ms Time] [2021-11-05 16:14:15,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21575 states. [2021-11-05 16:14:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21575 to 10831. [2021-11-05 16:14:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 10550 states have (on average 1.3918483412322276) internal successors, (14684), 10578 states have internal predecessors, (14684), 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) [2021-11-05 16:14:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 15020 transitions. [2021-11-05 16:14:15,788 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 15020 transitions. Word has length 88 [2021-11-05 16:14:15,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:15,788 INFO L470 AbstractCegarLoop]: Abstraction has 10831 states and 15020 transitions. [2021-11-05 16:14:15,788 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) [2021-11-05 16:14:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 15020 transitions. [2021-11-05 16:14:15,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-05 16:14:15,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:15,792 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] [2021-11-05 16:14:15,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 16:14:15,792 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)] === [2021-11-05 16:14:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1530586731, now seen corresponding path program 1 times [2021-11-05 16:14:15,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:15,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085624121] [2021-11-05 16:14:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:15,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 16:14:15,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:15,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085624121] [2021-11-05 16:14:15,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085624121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:15,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:15,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:14:15,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768752763] [2021-11-05 16:14:15,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:15,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:15,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:15,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:15,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:14:15,888 INFO L87 Difference]: Start difference. First operand 10831 states and 15020 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) [2021-11-05 16:14:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:16,827 INFO L93 Difference]: Finished difference Result 40545 states and 55948 transitions. [2021-11-05 16:14:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:14:16,828 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 [2021-11-05 16:14:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:16,897 INFO L225 Difference]: With dead ends: 40545 [2021-11-05 16:14:16,898 INFO L226 Difference]: Without dead ends: 29904 [2021-11-05 16:14:16,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:16,922 INFO L933 BasicCegarLoop]: 1389 mSDtfsCounter, 1748 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.45ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.66ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:16,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1752 Valid, 3656 Invalid, 78 Unknown, 0 Unchecked, 10.45ms Time], IncrementalHoareTripleChecker [14 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 59.66ms Time] [2021-11-05 16:14:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29904 states. [2021-11-05 16:14:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29904 to 10943. [2021-11-05 16:14:17,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10943 states, 10662 states have (on average 1.390358281748265) internal successors, (14824), 10690 states have internal predecessors, (14824), 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) [2021-11-05 16:14:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10943 states to 10943 states and 15160 transitions. [2021-11-05 16:14:17,505 INFO L78 Accepts]: Start accepts. Automaton has 10943 states and 15160 transitions. Word has length 89 [2021-11-05 16:14:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:17,505 INFO L470 AbstractCegarLoop]: Abstraction has 10943 states and 15160 transitions. [2021-11-05 16:14:17,506 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) [2021-11-05 16:14:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 10943 states and 15160 transitions. [2021-11-05 16:14:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 16:14:17,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:17,510 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] [2021-11-05 16:14:17,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 16:14:17,511 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)] === [2021-11-05 16:14:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:17,511 INFO L85 PathProgramCache]: Analyzing trace with hash 859087929, now seen corresponding path program 1 times [2021-11-05 16:14:17,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:17,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179559227] [2021-11-05 16:14:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:17,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 16:14:17,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:17,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179559227] [2021-11-05 16:14:17,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179559227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:17,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:17,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 16:14:17,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398912670] [2021-11-05 16:14:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:17,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 16:14:17,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 16:14:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:14:17,662 INFO L87 Difference]: Start difference. First operand 10943 states and 15160 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) [2021-11-05 16:14:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:23,333 INFO L93 Difference]: Finished difference Result 72345 states and 99583 transitions. [2021-11-05 16:14:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-05 16:14:23,333 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 [2021-11-05 16:14:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:23,477 INFO L225 Difference]: With dead ends: 72345 [2021-11-05 16:14:23,477 INFO L226 Difference]: Without dead ends: 61592 [2021-11-05 16:14:23,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 906.49ms TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2021-11-05 16:14:23,514 INFO L933 BasicCegarLoop]: 4402 mSDtfsCounter, 7518 mSDsluCounter, 18953 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1544.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7518 SdHoareTripleChecker+Valid, 23355 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.35ms SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1681.62ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:23,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7518 Valid, 23355 Invalid, 994 Unknown, 0 Unchecked, 37.35ms Time], IncrementalHoareTripleChecker [133 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1681.62ms Time] [2021-11-05 16:14:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61592 states. [2021-11-05 16:14:24,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61592 to 10943. [2021-11-05 16:14:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10943 states, 10662 states have (on average 1.3897017445132245) internal successors, (14817), 10690 states have internal predecessors, (14817), 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) [2021-11-05 16:14:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10943 states to 10943 states and 15153 transitions. [2021-11-05 16:14:24,449 INFO L78 Accepts]: Start accepts. Automaton has 10943 states and 15153 transitions. Word has length 91 [2021-11-05 16:14:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:24,449 INFO L470 AbstractCegarLoop]: Abstraction has 10943 states and 15153 transitions. [2021-11-05 16:14:24,449 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) [2021-11-05 16:14:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 10943 states and 15153 transitions. [2021-11-05 16:14:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 16:14:24,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:24,457 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] [2021-11-05 16:14:24,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 16:14:24,458 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)] === [2021-11-05 16:14:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1126116685, now seen corresponding path program 1 times [2021-11-05 16:14:24,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:24,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068477783] [2021-11-05 16:14:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:24,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-05 16:14:24,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:24,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068477783] [2021-11-05 16:14:24,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068477783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:24,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:24,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 16:14:24,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524141292] [2021-11-05 16:14:24,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:24,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 16:14:24,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 16:14:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-05 16:14:24,752 INFO L87 Difference]: Start difference. First operand 10943 states and 15153 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) [2021-11-05 16:14:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:35,218 INFO L93 Difference]: Finished difference Result 74524 states and 102528 transitions. [2021-11-05 16:14:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-05 16:14:35,226 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 [2021-11-05 16:14:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:35,366 INFO L225 Difference]: With dead ends: 74524 [2021-11-05 16:14:35,366 INFO L226 Difference]: Without dead ends: 63579 [2021-11-05 16:14:35,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2807 ImplicationChecksByTransitivity, 2041.61ms TimeCoverageRelationStatistics Valid=1485, Invalid=5997, Unknown=0, NotChecked=0, Total=7482 [2021-11-05 16:14:35,400 INFO L933 BasicCegarLoop]: 3401 mSDtfsCounter, 9732 mSDsluCounter, 18120 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2968.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9732 SdHoareTripleChecker+Valid, 21521 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.53ms SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3204.66ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:35,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9732 Valid, 21521 Invalid, 1227 Unknown, 0 Unchecked, 37.53ms Time], IncrementalHoareTripleChecker [162 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 3204.66ms Time] [2021-11-05 16:14:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63579 states. [2021-11-05 16:14:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63579 to 13928. [2021-11-05 16:14:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13928 states, 13647 states have (on average 1.3844801055176963) internal successors, (18894), 13675 states have internal predecessors, (18894), 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) [2021-11-05 16:14:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13928 states to 13928 states and 19230 transitions. [2021-11-05 16:14:36,900 INFO L78 Accepts]: Start accepts. Automaton has 13928 states and 19230 transitions. Word has length 97 [2021-11-05 16:14:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:36,900 INFO L470 AbstractCegarLoop]: Abstraction has 13928 states and 19230 transitions. [2021-11-05 16:14:36,900 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) [2021-11-05 16:14:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13928 states and 19230 transitions. [2021-11-05 16:14:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 16:14:36,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:36,909 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] [2021-11-05 16:14:36,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 16:14:36,909 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)] === [2021-11-05 16:14:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:36,910 INFO L85 PathProgramCache]: Analyzing trace with hash -881987495, now seen corresponding path program 1 times [2021-11-05 16:14:36,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:36,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619878173] [2021-11-05 16:14:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:36,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:14:36,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:36,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619878173] [2021-11-05 16:14:36,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619878173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:36,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:36,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:14:36,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011400707] [2021-11-05 16:14:36,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:36,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:36,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:36,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:14:36,979 INFO L87 Difference]: Start difference. First operand 13928 states and 19230 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) [2021-11-05 16:14:38,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:14:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:40,283 INFO L93 Difference]: Finished difference Result 35121 states and 48345 transitions. [2021-11-05 16:14:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:14:40,284 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 [2021-11-05 16:14:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:40,366 INFO L225 Difference]: With dead ends: 35121 [2021-11-05 16:14:40,366 INFO L226 Difference]: Without dead ends: 21206 [2021-11-05 16:14:40,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:40,395 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 1179 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1467.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1502.77ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:40,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 3409 Invalid, 24 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 1502.77ms Time] [2021-11-05 16:14:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21206 states. [2021-11-05 16:14:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21206 to 13980. [2021-11-05 16:14:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13980 states, 13699 states have (on average 1.383020658442222) internal successors, (18946), 13727 states have internal predecessors, (18946), 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) [2021-11-05 16:14:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13980 states to 13980 states and 19282 transitions. [2021-11-05 16:14:41,580 INFO L78 Accepts]: Start accepts. Automaton has 13980 states and 19282 transitions. Word has length 115 [2021-11-05 16:14:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:41,580 INFO L470 AbstractCegarLoop]: Abstraction has 13980 states and 19282 transitions. [2021-11-05 16:14:41,580 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) [2021-11-05 16:14:41,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13980 states and 19282 transitions. [2021-11-05 16:14:41,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-05 16:14:41,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:41,589 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] [2021-11-05 16:14:41,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 16:14:41,590 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)] === [2021-11-05 16:14:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash 809322604, now seen corresponding path program 1 times [2021-11-05 16:14:41,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:41,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372032376] [2021-11-05 16:14:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:41,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:14:41,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:41,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372032376] [2021-11-05 16:14:41,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372032376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:41,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:41,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:14:41,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861928515] [2021-11-05 16:14:41,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:41,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:41,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:14:41,653 INFO L87 Difference]: Start difference. First operand 13980 states and 19282 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) [2021-11-05 16:14:43,667 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 [] [2021-11-05 16:14:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:45,901 INFO L93 Difference]: Finished difference Result 35251 states and 48475 transitions. [2021-11-05 16:14:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:14:45,902 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 [2021-11-05 16:14:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:45,941 INFO L225 Difference]: With dead ends: 35251 [2021-11-05 16:14:45,942 INFO L226 Difference]: Without dead ends: 21284 [2021-11-05 16:14:45,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:45,965 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 1179 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2031.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2080.04ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:45,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 3409 Invalid, 23 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 2080.04ms Time] [2021-11-05 16:14:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21284 states. [2021-11-05 16:14:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21284 to 13980. [2021-11-05 16:14:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13980 states, 13699 states have (on average 1.383020658442222) internal successors, (18946), 13727 states have internal predecessors, (18946), 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) [2021-11-05 16:14:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13980 states to 13980 states and 19282 transitions. [2021-11-05 16:14:47,222 INFO L78 Accepts]: Start accepts. Automaton has 13980 states and 19282 transitions. Word has length 119 [2021-11-05 16:14:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:47,223 INFO L470 AbstractCegarLoop]: Abstraction has 13980 states and 19282 transitions. [2021-11-05 16:14:47,223 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) [2021-11-05 16:14:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13980 states and 19282 transitions. [2021-11-05 16:14:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 16:14:47,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:47,231 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] [2021-11-05 16:14:47,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 16:14:47,231 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)] === [2021-11-05 16:14:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2068841235, now seen corresponding path program 1 times [2021-11-05 16:14:47,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:47,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717115650] [2021-11-05 16:14:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:47,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:14:47,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:47,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717115650] [2021-11-05 16:14:47,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717115650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:47,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:47,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:47,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54871014] [2021-11-05 16:14:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:47,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:47,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:47,296 INFO L87 Difference]: Start difference. First operand 13980 states and 19282 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:48,393 INFO L93 Difference]: Finished difference Result 27999 states and 38627 transitions. [2021-11-05 16:14:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:48,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 [2021-11-05 16:14:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:48,418 INFO L225 Difference]: With dead ends: 27999 [2021-11-05 16:14:48,418 INFO L226 Difference]: Without dead ends: 14032 [2021-11-05 16:14:48,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:48,436 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.91ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:48,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1563 Invalid, 6 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 4.91ms Time] [2021-11-05 16:14:48,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2021-11-05 16:14:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 14006. [2021-11-05 16:14:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14006 states, 13725 states have (on average 1.382295081967213) internal successors, (18972), 13753 states have internal predecessors, (18972), 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) [2021-11-05 16:14:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14006 states to 14006 states and 19308 transitions. [2021-11-05 16:14:49,614 INFO L78 Accepts]: Start accepts. Automaton has 14006 states and 19308 transitions. Word has length 140 [2021-11-05 16:14:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:49,614 INFO L470 AbstractCegarLoop]: Abstraction has 14006 states and 19308 transitions. [2021-11-05 16:14:49,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 14006 states and 19308 transitions. [2021-11-05 16:14:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 16:14:49,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:49,622 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] [2021-11-05 16:14:49,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 16:14:49,623 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)] === [2021-11-05 16:14:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1325074740, now seen corresponding path program 1 times [2021-11-05 16:14:49,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:49,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090131160] [2021-11-05 16:14:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:49,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-05 16:14:49,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:49,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090131160] [2021-11-05 16:14:49,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090131160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:49,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:49,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:14:49,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113847529] [2021-11-05 16:14:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:49,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:49,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:14:49,730 INFO L87 Difference]: Start difference. First operand 14006 states and 19308 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) [2021-11-05 16:14:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:51,681 INFO L93 Difference]: Finished difference Result 35941 states and 49479 transitions. [2021-11-05 16:14:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:14:51,682 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 [2021-11-05 16:14:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:51,715 INFO L225 Difference]: With dead ends: 35941 [2021-11-05 16:14:51,715 INFO L226 Difference]: Without dead ends: 22128 [2021-11-05 16:14:51,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:51,737 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 872 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.21ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:51,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 2785 Invalid, 13 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 10.21ms Time] [2021-11-05 16:14:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22128 states. [2021-11-05 16:14:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22128 to 14048. [2021-11-05 16:14:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14048 states, 13767 states have (on average 1.3811287862279364) internal successors, (19014), 13795 states have internal predecessors, (19014), 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) [2021-11-05 16:14:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14048 states to 14048 states and 19350 transitions. [2021-11-05 16:14:52,950 INFO L78 Accepts]: Start accepts. Automaton has 14048 states and 19350 transitions. Word has length 140 [2021-11-05 16:14:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:52,951 INFO L470 AbstractCegarLoop]: Abstraction has 14048 states and 19350 transitions. [2021-11-05 16:14:52,951 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) [2021-11-05 16:14:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 14048 states and 19350 transitions. [2021-11-05 16:14:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 16:14:52,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:52,958 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] [2021-11-05 16:14:52,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 16:14:52,959 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)] === [2021-11-05 16:14:52,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1835795162, now seen corresponding path program 1 times [2021-11-05 16:14:52,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:52,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818562792] [2021-11-05 16:14:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:52,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:14:53,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:53,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818562792] [2021-11-05 16:14:53,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818562792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:53,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:53,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:14:53,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788557859] [2021-11-05 16:14:53,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:53,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:14:53,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:53,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:14:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:14:53,031 INFO L87 Difference]: Start difference. First operand 14048 states and 19350 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-11-05 16:14:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:54,295 INFO L93 Difference]: Finished difference Result 28163 states and 38805 transitions. [2021-11-05 16:14:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:14:54,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 [2021-11-05 16:14:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:54,325 INFO L225 Difference]: With dead ends: 28163 [2021-11-05 16:14:54,325 INFO L226 Difference]: Without dead ends: 14128 [2021-11-05 16:14:54,345 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 [2021-11-05 16:14:54,345 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 2 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.29ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:54,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1556 Invalid, 14 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 11.29ms Time] [2021-11-05 16:14:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14128 states. [2021-11-05 16:14:55,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14128 to 14088. [2021-11-05 16:14:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14088 states, 13807 states have (on average 1.380024625190121) internal successors, (19054), 13835 states have internal predecessors, (19054), 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) [2021-11-05 16:14:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14088 states to 14088 states and 19390 transitions. [2021-11-05 16:14:55,646 INFO L78 Accepts]: Start accepts. Automaton has 14088 states and 19390 transitions. Word has length 142 [2021-11-05 16:14:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:55,646 INFO L470 AbstractCegarLoop]: Abstraction has 14088 states and 19390 transitions. [2021-11-05 16:14:55,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-11-05 16:14:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14088 states and 19390 transitions. [2021-11-05 16:14:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 16:14:55,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:55,654 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] [2021-11-05 16:14:55,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 16:14:55,654 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)] === [2021-11-05 16:14:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:55,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1798951761, now seen corresponding path program 1 times [2021-11-05 16:14:55,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:55,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819580221] [2021-11-05 16:14:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:55,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:14:55,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:55,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819580221] [2021-11-05 16:14:55,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819580221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:55,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045344732] [2021-11-05 16:14:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:55,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:55,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:55,720 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) [2021-11-05 16:14:55,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 16:14:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:56,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:14:56,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:14:56,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:14:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:14:56,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045344732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:14:56,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:14:56,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 16:14:56,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769182103] [2021-11-05 16:14:56,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:14:56,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:14:56,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:14:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:14:56,693 INFO L87 Difference]: Start difference. First operand 14088 states and 19390 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) [2021-11-05 16:14:57,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:57,891 INFO L93 Difference]: Finished difference Result 28319 states and 38999 transitions. [2021-11-05 16:14:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:14:57,892 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 [2021-11-05 16:14:57,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:57,916 INFO L225 Difference]: With dead ends: 28319 [2021-11-05 16:14:57,916 INFO L226 Difference]: Without dead ends: 14244 [2021-11-05 16:14:57,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 14.88ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:14:57,935 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 6 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.10ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:57,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1563 Invalid, 18 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 12.10ms Time] [2021-11-05 16:14:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14244 states. [2021-11-05 16:14:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14244 to 14244. [2021-11-05 16:14:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14244 states, 13963 states have (on average 1.3757788440879468) internal successors, (19210), 13991 states have internal predecessors, (19210), 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) [2021-11-05 16:14:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 19546 transitions. [2021-11-05 16:14:59,244 INFO L78 Accepts]: Start accepts. Automaton has 14244 states and 19546 transitions. Word has length 144 [2021-11-05 16:14:59,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:59,244 INFO L470 AbstractCegarLoop]: Abstraction has 14244 states and 19546 transitions. [2021-11-05 16:14:59,244 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) [2021-11-05 16:14:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14244 states and 19546 transitions. [2021-11-05 16:14:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 16:14:59,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:59,251 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] [2021-11-05 16:14:59,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 16:14:59,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:59,470 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)] === [2021-11-05 16:14:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash -894810166, now seen corresponding path program 1 times [2021-11-05 16:14:59,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:59,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606566720] [2021-11-05 16:14:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:59,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:14:59,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:59,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606566720] [2021-11-05 16:14:59,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606566720] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:59,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027134410] [2021-11-05 16:14:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:59,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:59,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:59,570 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) [2021-11-05 16:14:59,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 16:15:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:00,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:15:00,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:15:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:00,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:15:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:00,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027134410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:15:00,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:15:00,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 16:15:00,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842036379] [2021-11-05 16:15:00,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:15:00,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:15:00,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:00,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:15:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:15:00,466 INFO L87 Difference]: Start difference. First operand 14244 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:01,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:01,848 INFO L93 Difference]: Finished difference Result 28715 states and 39437 transitions. [2021-11-05 16:15:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:15:01,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 [2021-11-05 16:15:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:01,873 INFO L225 Difference]: With dead ends: 28715 [2021-11-05 16:15:01,873 INFO L226 Difference]: Without dead ends: 14484 [2021-11-05 16:15:01,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.48ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:15:01,888 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 9 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.79ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:01,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 3881 Invalid, 51 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [13 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 24.79ms Time] [2021-11-05 16:15:01,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14484 states. [2021-11-05 16:15:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14484 to 14484. [2021-11-05 16:15:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14484 states, 14203 states have (on average 1.3694289938745337) internal successors, (19450), 14231 states have internal predecessors, (19450), 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) [2021-11-05 16:15:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14484 states to 14484 states and 19786 transitions. [2021-11-05 16:15:03,174 INFO L78 Accepts]: Start accepts. Automaton has 14484 states and 19786 transitions. Word has length 144 [2021-11-05 16:15:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:03,174 INFO L470 AbstractCegarLoop]: Abstraction has 14484 states and 19786 transitions. [2021-11-05 16:15:03,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 14484 states and 19786 transitions. [2021-11-05 16:15:03,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-05 16:15:03,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:03,188 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] [2021-11-05 16:15:03,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-05 16:15:03,398 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,SelfDestructingSolverStorable24 [2021-11-05 16:15:03,399 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)] === [2021-11-05 16:15:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1093552515, now seen corresponding path program 2 times [2021-11-05 16:15:03,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:03,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343668519] [2021-11-05 16:15:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:03,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-05 16:15:03,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:03,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343668519] [2021-11-05 16:15:03,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343668519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:15:03,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136218231] [2021-11-05 16:15:03,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:15:03,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:15:03,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:15:03,499 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) [2021-11-05 16:15:03,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 16:15:05,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:15:05,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:15:05,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 16:15:05,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:15:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:15:05,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:15:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-05 16:15:05,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136218231] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:15:05,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:15:05,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-11-05 16:15:05,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84883073] [2021-11-05 16:15:05,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:15:05,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 16:15:05,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 16:15:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-11-05 16:15:05,765 INFO L87 Difference]: Start difference. First operand 14484 states and 19786 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) [2021-11-05 16:15:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:10,341 INFO L93 Difference]: Finished difference Result 51651 states and 70906 transitions. [2021-11-05 16:15:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-05 16:15:10,341 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 [2021-11-05 16:15:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:10,407 INFO L225 Difference]: With dead ends: 51651 [2021-11-05 16:15:10,407 INFO L226 Difference]: Without dead ends: 37180 [2021-11-05 16:15:10,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 213.07ms TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 16:15:10,430 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 1498 mSDsluCounter, 5079 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 907.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 6597 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.89ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 973.06ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:10,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 6597 Invalid, 153 Unknown, 0 Unchecked, 7.89ms Time], IncrementalHoareTripleChecker [42 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 973.06ms Time] [2021-11-05 16:15:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37180 states. [2021-11-05 16:15:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37180 to 23520. [2021-11-05 16:15:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23520 states, 23079 states have (on average 1.3617574418302352) internal successors, (31428), 23123 states have internal predecessors, (31428), 264 states have call successors, (264), 176 states have call predecessors, (264), 176 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-05 16:15:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23520 states to 23520 states and 31956 transitions. [2021-11-05 16:15:12,844 INFO L78 Accepts]: Start accepts. Automaton has 23520 states and 31956 transitions. Word has length 150 [2021-11-05 16:15:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:12,844 INFO L470 AbstractCegarLoop]: Abstraction has 23520 states and 31956 transitions. [2021-11-05 16:15:12,844 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) [2021-11-05 16:15:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 23520 states and 31956 transitions. [2021-11-05 16:15:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-05 16:15:12,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:12,852 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 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] [2021-11-05 16:15:12,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 16:15:13,076 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,SelfDestructingSolverStorable25 [2021-11-05 16:15:13,076 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)] === [2021-11-05 16:15:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1869975990, now seen corresponding path program 2 times [2021-11-05 16:15:13,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:13,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557576861] [2021-11-05 16:15:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:13,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:13,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:13,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557576861] [2021-11-05 16:15:13,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557576861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:15:13,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52430294] [2021-11-05 16:15:13,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:15:13,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:15:13,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:15:13,219 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) [2021-11-05 16:15:13,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 16:15:15,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:15:15,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:15:15,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 16:15:15,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:15:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:15,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:15:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:15,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52430294] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:15:15,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:15:15,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-05 16:15:15,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399685232] [2021-11-05 16:15:15,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:15:15,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 16:15:15,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 16:15:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:15:15,492 INFO L87 Difference]: Start difference. First operand 23520 states and 31956 transitions. Second operand has 13 states, 13 states have (on average 10.846153846153847) internal successors, (141), 13 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:17,959 INFO L93 Difference]: Finished difference Result 47651 states and 64833 transitions. [2021-11-05 16:15:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 16:15:17,960 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.846153846153847) internal successors, (141), 13 states have internal predecessors, (141), 0 states have call successors, (0), 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 [2021-11-05 16:15:17,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:18,006 INFO L225 Difference]: With dead ends: 47651 [2021-11-05 16:15:18,006 INFO L226 Difference]: Without dead ends: 24144 [2021-11-05 16:15:18,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 44.81ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:15:18,044 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 30 mSDsluCounter, 3100 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.11ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:18,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 3881 Invalid, 94 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [36 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 44.11ms Time] [2021-11-05 16:15:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24144 states. [2021-11-05 16:15:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24144 to 24144. [2021-11-05 16:15:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24144 states, 23703 states have (on average 1.3522338944437413) internal successors, (32052), 23747 states have internal predecessors, (32052), 264 states have call successors, (264), 176 states have call predecessors, (264), 176 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-05 16:15:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24144 states to 24144 states and 32580 transitions. [2021-11-05 16:15:20,561 INFO L78 Accepts]: Start accepts. Automaton has 24144 states and 32580 transitions. Word has length 150 [2021-11-05 16:15:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:20,561 INFO L470 AbstractCegarLoop]: Abstraction has 24144 states and 32580 transitions. [2021-11-05 16:15:20,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.846153846153847) internal successors, (141), 13 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 24144 states and 32580 transitions. [2021-11-05 16:15:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 16:15:20,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:20,572 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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] [2021-11-05 16:15:20,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 16:15:20,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:15:20,791 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)] === [2021-11-05 16:15:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2062253426, now seen corresponding path program 3 times [2021-11-05 16:15:20,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:20,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712159479] [2021-11-05 16:15:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:20,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 50 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:20,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:20,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712159479] [2021-11-05 16:15:20,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712159479] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:15:20,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078779557] [2021-11-05 16:15:20,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 16:15:20,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:15:20,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:15:20,996 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) [2021-11-05 16:15:20,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 16:15:24,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-05 16:15:24,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:15:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:15:24,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:15:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-05 16:15:24,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:15:24,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078779557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:15:24,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:15:24,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-11-05 16:15:24,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179454760] [2021-11-05 16:15:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:15:24,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:15:24,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:15:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-05 16:15:24,439 INFO L87 Difference]: Start difference. First operand 24144 states and 32580 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) [2021-11-05 16:15:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:30,861 INFO L93 Difference]: Finished difference Result 57885 states and 77570 transitions. [2021-11-05 16:15:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:15:30,871 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 162 [2021-11-05 16:15:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:30,934 INFO L225 Difference]: With dead ends: 57885 [2021-11-05 16:15:30,935 INFO L226 Difference]: Without dead ends: 33754 [2021-11-05 16:15:30,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 57.10ms TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-05 16:15:30,971 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 542 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2597.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2626.56ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:30,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1729 Invalid, 13 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 2626.56ms Time] [2021-11-05 16:15:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33754 states. [2021-11-05 16:15:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33754 to 23811. [2021-11-05 16:15:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23811 states, 23370 states have (on average 1.3430038510911424) internal successors, (31386), 23414 states have internal predecessors, (31386), 264 states have call successors, (264), 176 states have call predecessors, (264), 176 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-05 16:15:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23811 states to 23811 states and 31914 transitions. [2021-11-05 16:15:33,508 INFO L78 Accepts]: Start accepts. Automaton has 23811 states and 31914 transitions. Word has length 162 [2021-11-05 16:15:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:33,508 INFO L470 AbstractCegarLoop]: Abstraction has 23811 states and 31914 transitions. [2021-11-05 16:15:33,509 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) [2021-11-05 16:15:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 23811 states and 31914 transitions. [2021-11-05 16:15:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 16:15:33,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:33,519 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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] [2021-11-05 16:15:33,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 16:15:33,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-05 16:15:33,724 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)] === [2021-11-05 16:15:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2140800654, now seen corresponding path program 1 times [2021-11-05 16:15:33,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:33,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73085762] [2021-11-05 16:15:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:33,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 50 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:33,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:33,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73085762] [2021-11-05 16:15:33,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73085762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:15:33,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276156615] [2021-11-05 16:15:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:33,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:15:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:15:33,881 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) [2021-11-05 16:15:33,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 16:15:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:34,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 16:15:34,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:15:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 50 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:34,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:15:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 50 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:15:34,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276156615] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:15:34,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:15:34,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2021-11-05 16:15:34,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689267158] [2021-11-05 16:15:34,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:15:34,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-05 16:15:34,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-05 16:15:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-05 16:15:34,879 INFO L87 Difference]: Start difference. First operand 23811 states and 31914 transitions. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:37,793 INFO L93 Difference]: Finished difference Result 48649 states and 65373 transitions. [2021-11-05 16:15:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 16:15:37,794 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-05 16:15:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:37,847 INFO L225 Difference]: With dead ends: 48649 [2021-11-05 16:15:37,847 INFO L226 Difference]: Without dead ends: 24851 [2021-11-05 16:15:37,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 144.80ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-05 16:15:37,883 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 64 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.83ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:37,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 4548 Invalid, 160 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [58 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 91.83ms Time] [2021-11-05 16:15:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24851 states. [2021-11-05 16:15:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24851 to 24851. [2021-11-05 16:15:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24851 states, 24410 states have (on average 1.3283900040966816) internal successors, (32426), 24454 states have internal predecessors, (32426), 264 states have call successors, (264), 176 states have call predecessors, (264), 176 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-05 16:15:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24851 states to 24851 states and 32954 transitions. [2021-11-05 16:15:40,618 INFO L78 Accepts]: Start accepts. Automaton has 24851 states and 32954 transitions. Word has length 162 [2021-11-05 16:15:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:40,619 INFO L470 AbstractCegarLoop]: Abstraction has 24851 states and 32954 transitions. [2021-11-05 16:15:40,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 24851 states and 32954 transitions. [2021-11-05 16:15:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-05 16:15:40,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:40,633 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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] [2021-11-05 16:15:40,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 16:15:40,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-05 16:15:40,854 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)] === [2021-11-05 16:15:40,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash 836749302, now seen corresponding path program 2 times [2021-11-05 16:15:40,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:40,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588555672] [2021-11-05 16:15:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:40,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2021-11-05 16:15:41,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:41,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588555672] [2021-11-05 16:15:41,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588555672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:15:41,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:15:41,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:15:41,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638131057] [2021-11-05 16:15:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:15:41,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:15:41,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:41,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:15:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:15:41,013 INFO L87 Difference]: Start difference. First operand 24851 states and 32954 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 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) [2021-11-05 16:15:42,480 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 [] [2021-11-05 16:15:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:48,518 INFO L93 Difference]: Finished difference Result 60043 states and 79395 transitions. [2021-11-05 16:15:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:15:48,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 182 [2021-11-05 16:15:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:48,586 INFO L225 Difference]: With dead ends: 60043 [2021-11-05 16:15:48,586 INFO L226 Difference]: Without dead ends: 35205 [2021-11-05 16:15:48,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:15:48,624 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 542 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3279.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3359.83ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:48,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2771 Invalid, 113 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 3359.83ms Time] [2021-11-05 16:15:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35205 states. [2021-11-05 16:15:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35205 to 24962. [2021-11-05 16:15:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24962 states, 24521 states have (on average 1.326903470494678) internal successors, (32537), 24565 states have internal predecessors, (32537), 264 states have call successors, (264), 176 states have call predecessors, (264), 176 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-05 16:15:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24962 states to 24962 states and 33065 transitions. [2021-11-05 16:15:51,642 INFO L78 Accepts]: Start accepts. Automaton has 24962 states and 33065 transitions. Word has length 182 [2021-11-05 16:15:51,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:51,642 INFO L470 AbstractCegarLoop]: Abstraction has 24962 states and 33065 transitions. [2021-11-05 16:15:51,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 24962 states and 33065 transitions. [2021-11-05 16:15:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-05 16:15:51,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:51,659 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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] [2021-11-05 16:15:51,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 16:15:51,660 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)] === [2021-11-05 16:15:51,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1022778143, now seen corresponding path program 1 times [2021-11-05 16:15:51,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:51,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946009225] [2021-11-05 16:15:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:51,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2021-11-05 16:15:51,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:51,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946009225] [2021-11-05 16:15:51,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946009225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:15:51,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834795764] [2021-11-05 16:15:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:51,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:15:51,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:15:51,896 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) [2021-11-05 16:15:51,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 16:15:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:52,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 16:15:52,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:15:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:15:52,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:15:52,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834795764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:15:52,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:15:52,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-05 16:15:52,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528328125] [2021-11-05 16:15:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:15:52,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:15:52,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:15:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:15:52,722 INFO L87 Difference]: Start difference. First operand 24962 states and 33065 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:58,358 INFO L93 Difference]: Finished difference Result 66938 states and 88455 transitions. [2021-11-05 16:15:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:15:58,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 183 [2021-11-05 16:15:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:58,440 INFO L225 Difference]: With dead ends: 66938 [2021-11-05 16:15:58,440 INFO L226 Difference]: Without dead ends: 42224 [2021-11-05 16:15:58,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.83ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:15:58,484 INFO L933 BasicCegarLoop]: 1310 mSDtfsCounter, 925 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 630.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 661.26ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:58,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 3376 Invalid, 16 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 661.26ms Time] [2021-11-05 16:15:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42224 states. [2021-11-05 16:16:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42224 to 25028. [2021-11-05 16:16:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25028 states, 24587 states have (on average 1.3260259486720625) internal successors, (32603), 24631 states have internal predecessors, (32603), 264 states have call successors, (264), 176 states have call predecessors, (264), 176 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-05 16:16:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25028 states to 25028 states and 33131 transitions. [2021-11-05 16:16:01,498 INFO L78 Accepts]: Start accepts. Automaton has 25028 states and 33131 transitions. Word has length 183 [2021-11-05 16:16:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:16:01,498 INFO L470 AbstractCegarLoop]: Abstraction has 25028 states and 33131 transitions. [2021-11-05 16:16:01,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:16:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 25028 states and 33131 transitions. [2021-11-05 16:16:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-05 16:16:01,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:16:01,513 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1] [2021-11-05 16:16:01,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 16:16:01,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-05 16:16:01,716 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)] === [2021-11-05 16:16:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:16:01,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1878053616, now seen corresponding path program 1 times [2021-11-05 16:16:01,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:16:01,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948731495] [2021-11-05 16:16:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:16:01,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:16:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:16:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:16:01,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:16:01,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948731495] [2021-11-05 16:16:01,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948731495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:16:01,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:16:01,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:16:01,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909241875] [2021-11-05 16:16:01,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:16:01,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:16:01,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:16:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:16:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:16:01,795 INFO L87 Difference]: Start difference. First operand 25028 states and 33131 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:16:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:16:07,230 INFO L93 Difference]: Finished difference Result 65183 states and 85325 transitions. [2021-11-05 16:16:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:16:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 190 [2021-11-05 16:16:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:16:07,308 INFO L225 Difference]: With dead ends: 65183 [2021-11-05 16:16:07,309 INFO L226 Difference]: Without dead ends: 40403 [2021-11-05 16:16:07,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:16:07,352 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 431 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.61ms IncrementalHoareTripleChecker+Time [2021-11-05 16:16:07,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1716 Invalid, 11 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 6.61ms Time] [2021-11-05 16:16:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40403 states. [2021-11-05 16:16:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40403 to 24764. [2021-11-05 16:16:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24764 states, 24312 states have (on average 1.3184024350115169) internal successors, (32053), 24356 states have internal predecessors, (32053), 275 states have call successors, (275), 176 states have call predecessors, (275), 176 states have return successors, (275), 275 states have call predecessors, (275), 275 states have call successors, (275) [2021-11-05 16:16:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24764 states to 24764 states and 32603 transitions. [2021-11-05 16:16:10,501 INFO L78 Accepts]: Start accepts. Automaton has 24764 states and 32603 transitions. Word has length 190 [2021-11-05 16:16:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:16:10,501 INFO L470 AbstractCegarLoop]: Abstraction has 24764 states and 32603 transitions. [2021-11-05 16:16:10,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:16:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 24764 states and 32603 transitions. [2021-11-05 16:16:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-05 16:16:10,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:16:10,516 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:16:10,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 16:16:10,517 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:16:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:16:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash -928915574, now seen corresponding path program 1 times [2021-11-05 16:16:10,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:16:10,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574170832] [2021-11-05 16:16:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:16:10,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:16:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:16:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:16:10,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:16:10,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574170832] [2021-11-05 16:16:10,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574170832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:16:10,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:16:10,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:16:10,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992280535] [2021-11-05 16:16:10,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:16:10,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:16:10,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:16:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:16:10,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:16:10,620 INFO L87 Difference]: Start difference. First operand 24764 states and 32603 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:16:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:16:19,321 INFO L93 Difference]: Finished difference Result 87550 states and 113787 transitions. [2021-11-05 16:16:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:16:19,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-11-05 16:16:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:16:19,431 INFO L225 Difference]: With dead ends: 87550 [2021-11-05 16:16:19,432 INFO L226 Difference]: Without dead ends: 63034 [2021-11-05 16:16:19,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:16:19,629 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 1992 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 4372 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.96ms IncrementalHoareTripleChecker+Time [2021-11-05 16:16:19,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1993 Valid, 4372 Invalid, 49 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 28.96ms Time] [2021-11-05 16:16:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63034 states. [2021-11-05 16:16:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63034 to 24874. [2021-11-05 16:16:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24874 states, 24422 states have (on average 1.3178691343870281) internal successors, (32185), 24466 states have internal predecessors, (32185), 275 states have call successors, (275), 176 states have call predecessors, (275), 176 states have return successors, (275), 275 states have call predecessors, (275), 275 states have call successors, (275) [2021-11-05 16:16:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24874 states to 24874 states and 32735 transitions. [2021-11-05 16:16:23,001 INFO L78 Accepts]: Start accepts. Automaton has 24874 states and 32735 transitions. Word has length 199 [2021-11-05 16:16:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:16:23,002 INFO L470 AbstractCegarLoop]: Abstraction has 24874 states and 32735 transitions. [2021-11-05 16:16:23,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:16:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 24874 states and 32735 transitions. [2021-11-05 16:16:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-05 16:16:23,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:16:23,016 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:16:23,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 16:16:23,017 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:16:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:16:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1089896936, now seen corresponding path program 1 times [2021-11-05 16:16:23,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:16:23,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963781510] [2021-11-05 16:16:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:16:23,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:16:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:16:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:16:23,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:16:23,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963781510] [2021-11-05 16:16:23,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963781510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:16:23,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:16:23,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 16:16:23,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833341514] [2021-11-05 16:16:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:16:23,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:16:23,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:16:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:16:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:16:23,125 INFO L87 Difference]: Start difference. First operand 24874 states and 32735 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 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) [2021-11-05 16:16:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:16:30,611 INFO L93 Difference]: Finished difference Result 68940 states and 90816 transitions. [2021-11-05 16:16:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 16:16:30,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 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 200 [2021-11-05 16:16:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:16:30,705 INFO L225 Difference]: With dead ends: 68940 [2021-11-05 16:16:30,706 INFO L226 Difference]: Without dead ends: 44314 [2021-11-05 16:16:30,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 69.84ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-05 16:16:30,746 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 2349 mSDsluCounter, 6711 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 900.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 8181 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 937.26ms IncrementalHoareTripleChecker+Time [2021-11-05 16:16:30,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 8181 Invalid, 120 Unknown, 0 Unchecked, 7.74ms Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 937.26ms Time] [2021-11-05 16:16:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44314 states. [2021-11-05 16:16:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44314 to 24940. [2021-11-05 16:16:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24940 states, 24488 states have (on average 1.3179108134596538) internal successors, (32273), 24532 states have internal predecessors, (32273), 275 states have call successors, (275), 176 states have call predecessors, (275), 176 states have return successors, (275), 275 states have call predecessors, (275), 275 states have call successors, (275) [2021-11-05 16:16:34,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24940 states to 24940 states and 32823 transitions. [2021-11-05 16:16:34,271 INFO L78 Accepts]: Start accepts. Automaton has 24940 states and 32823 transitions. Word has length 200 [2021-11-05 16:16:34,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:16:34,271 INFO L470 AbstractCegarLoop]: Abstraction has 24940 states and 32823 transitions. [2021-11-05 16:16:34,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 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) [2021-11-05 16:16:34,271 INFO L276 IsEmpty]: Start isEmpty. Operand 24940 states and 32823 transitions. [2021-11-05 16:16:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-05 16:16:34,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:16:34,295 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:16:34,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 16:16:34,295 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:16:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:16:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1343404183, now seen corresponding path program 1 times [2021-11-05 16:16:34,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:16:34,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218622189] [2021-11-05 16:16:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:16:34,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:16:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:16:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:16:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:16:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:16:34,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:16:34,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218622189] [2021-11-05 16:16:34,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218622189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:16:34,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:16:34,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 16:16:34,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050086214] [2021-11-05 16:16:34,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:16:34,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 16:16:34,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:16:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 16:16:34,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:16:34,427 INFO L87 Difference]: Start difference. First operand 24940 states and 32823 transitions. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:16:38,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:16:40,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:16:42,297 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 [] [2021-11-05 16:16:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:16:54,478 INFO L93 Difference]: Finished difference Result 101466 states and 132052 transitions. [2021-11-05 16:16:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 16:16:54,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224 [2021-11-05 16:16:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:16:54,663 INFO L225 Difference]: With dead ends: 101466 [2021-11-05 16:16:54,663 INFO L226 Difference]: Without dead ends: 76774 [2021-11-05 16:16:54,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 97.28ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:16:54,714 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 1673 mSDsluCounter, 8603 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8065.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 9947 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.22ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8394.69ms IncrementalHoareTripleChecker+Time [2021-11-05 16:16:54,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 9947 Invalid, 690 Unknown, 0 Unchecked, 30.22ms Time], IncrementalHoareTripleChecker [27 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 8394.69ms Time] [2021-11-05 16:16:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76774 states. [2021-11-05 16:16:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76774 to 25039. [2021-11-05 16:16:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25039 states, 24576 states have (on average 1.3167724609375) internal successors, (32361), 24609 states have internal predecessors, (32361), 275 states have call successors, (275), 176 states have call predecessors, (275), 187 states have return successors, (308), 297 states have call predecessors, (308), 275 states have call successors, (308) [2021-11-05 16:16:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25039 states to 25039 states and 32944 transitions. [2021-11-05 16:16:58,850 INFO L78 Accepts]: Start accepts. Automaton has 25039 states and 32944 transitions. Word has length 224 [2021-11-05 16:16:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:16:58,851 INFO L470 AbstractCegarLoop]: Abstraction has 25039 states and 32944 transitions. [2021-11-05 16:16:58,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:16:58,851 INFO L276 IsEmpty]: Start isEmpty. Operand 25039 states and 32944 transitions. [2021-11-05 16:16:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-05 16:16:58,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:16:58,873 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:16:58,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 16:16:58,874 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:16:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:16:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1911804217, now seen corresponding path program 1 times [2021-11-05 16:16:58,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:16:58,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372323290] [2021-11-05 16:16:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:16:58,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:16:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:16:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:16:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:16:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:16:59,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:16:59,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372323290] [2021-11-05 16:16:59,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372323290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:16:59,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:16:59,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 16:16:59,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908968251] [2021-11-05 16:16:59,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:16:59,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 16:16:59,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:16:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 16:16:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-05 16:16:59,028 INFO L87 Difference]: Start difference. First operand 25039 states and 32944 transitions. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:17:07,774 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 [] [2021-11-05 16:17:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:17:20,760 INFO L93 Difference]: Finished difference Result 107871 states and 140079 transitions. [2021-11-05 16:17:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 16:17:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 224 [2021-11-05 16:17:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:17:20,945 INFO L225 Difference]: With dead ends: 107871 [2021-11-05 16:17:20,946 INFO L226 Difference]: Without dead ends: 83080 [2021-11-05 16:17:20,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 146.91ms TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-11-05 16:17:20,998 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 2991 mSDsluCounter, 10704 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7179.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 12047 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.37ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7540.84ms IncrementalHoareTripleChecker+Time [2021-11-05 16:17:20,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2996 Valid, 12047 Invalid, 805 Unknown, 0 Unchecked, 19.37ms Time], IncrementalHoareTripleChecker [34 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 7540.84ms Time] [2021-11-05 16:17:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83080 states. [2021-11-05 16:17:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83080 to 25193. [2021-11-05 16:17:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25193 states, 24730 states have (on average 1.316579053780833) internal successors, (32559), 24763 states have internal predecessors, (32559), 275 states have call successors, (275), 176 states have call predecessors, (275), 187 states have return successors, (308), 297 states have call predecessors, (308), 275 states have call successors, (308) [2021-11-05 16:17:25,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25193 states to 25193 states and 33142 transitions. [2021-11-05 16:17:25,303 INFO L78 Accepts]: Start accepts. Automaton has 25193 states and 33142 transitions. Word has length 224 [2021-11-05 16:17:25,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:17:25,303 INFO L470 AbstractCegarLoop]: Abstraction has 25193 states and 33142 transitions. [2021-11-05 16:17:25,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 9 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:17:25,304 INFO L276 IsEmpty]: Start isEmpty. Operand 25193 states and 33142 transitions. [2021-11-05 16:17:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-05 16:17:25,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:17:25,323 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:17:25,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 16:17:25,324 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:17:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:17:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1042102759, now seen corresponding path program 1 times [2021-11-05 16:17:25,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:17:25,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230748038] [2021-11-05 16:17:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:17:25,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:17:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:17:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:17:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:17:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:17:25,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:17:25,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230748038] [2021-11-05 16:17:25,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230748038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:17:25,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:17:25,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 16:17:25,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036014321] [2021-11-05 16:17:25,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:17:25,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 16:17:25,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:17:25,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 16:17:25,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:17:25,484 INFO L87 Difference]: Start difference. First operand 25193 states and 33142 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:17:27,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:17:29,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:17:31,273 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 [] [2021-11-05 16:17:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:17:41,712 INFO L93 Difference]: Finished difference Result 69891 states and 92388 transitions. [2021-11-05 16:17:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 16:17:41,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-11-05 16:17:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:17:41,797 INFO L225 Difference]: With dead ends: 69891 [2021-11-05 16:17:41,797 INFO L226 Difference]: Without dead ends: 44946 [2021-11-05 16:17:41,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 95.08ms TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-11-05 16:17:41,832 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 1511 mSDsluCounter, 7072 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8277.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 8703 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.74ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8658.37ms IncrementalHoareTripleChecker+Time [2021-11-05 16:17:41,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 8703 Invalid, 934 Unknown, 0 Unchecked, 14.74ms Time], IncrementalHoareTripleChecker [36 Valid, 897 Invalid, 1 Unknown, 0 Unchecked, 8658.37ms Time] [2021-11-05 16:17:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44946 states. [2021-11-05 16:17:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44946 to 24885. [2021-11-05 16:17:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24885 states, 24422 states have (on average 1.3169683072639424) internal successors, (32163), 24455 states have internal predecessors, (32163), 275 states have call successors, (275), 176 states have call predecessors, (275), 187 states have return successors, (308), 297 states have call predecessors, (308), 275 states have call successors, (308) [2021-11-05 16:17:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24885 states to 24885 states and 32746 transitions. [2021-11-05 16:17:46,170 INFO L78 Accepts]: Start accepts. Automaton has 24885 states and 32746 transitions. Word has length 225 [2021-11-05 16:17:46,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:17:46,171 INFO L470 AbstractCegarLoop]: Abstraction has 24885 states and 32746 transitions. [2021-11-05 16:17:46,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:17:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24885 states and 32746 transitions. [2021-11-05 16:17:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-05 16:17:46,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:17:46,189 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:17:46,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 16:17:46,189 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:17:46,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:17:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash -959153820, now seen corresponding path program 1 times [2021-11-05 16:17:46,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:17:46,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495416212] [2021-11-05 16:17:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:17:46,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:17:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:17:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:17:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:17:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2021-11-05 16:17:46,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:17:46,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495416212] [2021-11-05 16:17:46,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495416212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:17:46,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335307626] [2021-11-05 16:17:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:17:46,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:17:46,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:17:46,316 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:17:46,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 16:17:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:17:46,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:17:46,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:17:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-05 16:17:47,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:17:47,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335307626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:17:47,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:17:47,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-05 16:17:47,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845922069] [2021-11-05 16:17:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:17:47,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:17:47,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:17:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:17:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:17:47,081 INFO L87 Difference]: Start difference. First operand 24885 states and 32746 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:17:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:17:54,977 INFO L93 Difference]: Finished difference Result 66514 states and 87008 transitions. [2021-11-05 16:17:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:17:54,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-11-05 16:17:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:17:55,073 INFO L225 Difference]: With dead ends: 66514 [2021-11-05 16:17:55,074 INFO L226 Difference]: Without dead ends: 41877 [2021-11-05 16:17:55,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.63ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:17:55,107 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 479 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.71ms IncrementalHoareTripleChecker+Time [2021-11-05 16:17:55,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1723 Invalid, 11 Unknown, 0 Unchecked, 3.10ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 10.71ms Time] [2021-11-05 16:17:55,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41877 states. [2021-11-05 16:17:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41877 to 24907. [2021-11-05 16:17:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24907 states, 24444 states have (on average 1.3157830142366225) internal successors, (32163), 24477 states have internal predecessors, (32163), 275 states have call successors, (275), 176 states have call predecessors, (275), 187 states have return successors, (308), 297 states have call predecessors, (308), 275 states have call successors, (308) [2021-11-05 16:17:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24907 states to 24907 states and 32746 transitions. [2021-11-05 16:17:59,476 INFO L78 Accepts]: Start accepts. Automaton has 24907 states and 32746 transitions. Word has length 225 [2021-11-05 16:17:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:17:59,476 INFO L470 AbstractCegarLoop]: Abstraction has 24907 states and 32746 transitions. [2021-11-05 16:17:59,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:17:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 24907 states and 32746 transitions. [2021-11-05 16:17:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-05 16:17:59,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:17:59,500 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:17:59,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 16:17:59,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-05 16:17:59,712 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:17:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:17:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1070545289, now seen corresponding path program 1 times [2021-11-05 16:17:59,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:17:59,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441689903] [2021-11-05 16:17:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:17:59,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:17:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:17:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:17:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:17:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-05 16:17:59,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:17:59,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441689903] [2021-11-05 16:17:59,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441689903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:17:59,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107606248] [2021-11-05 16:17:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:17:59,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:17:59,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:17:59,908 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:17:59,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 16:18:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:18:00,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:18:00,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:18:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-05 16:18:00,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:18:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-05 16:18:01,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107606248] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:18:01,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:18:01,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-05 16:18:01,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201630225] [2021-11-05 16:18:01,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:18:01,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 16:18:01,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:18:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 16:18:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:18:01,078 INFO L87 Difference]: Start difference. First operand 24907 states and 32746 transitions. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 7 states have internal predecessors, (255), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-05 16:18:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:18:23,520 INFO L93 Difference]: Finished difference Result 107143 states and 139384 transitions. [2021-11-05 16:18:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:18:23,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 7 states have internal predecessors, (255), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 261 [2021-11-05 16:18:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:18:23,712 INFO L225 Difference]: With dead ends: 107143 [2021-11-05 16:18:23,712 INFO L226 Difference]: Without dead ends: 82484 [2021-11-05 16:18:23,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 25.41ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:18:23,769 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 3354 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5429.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.85ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5707.87ms IncrementalHoareTripleChecker+Time [2021-11-05 16:18:23,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 4352 Invalid, 406 Unknown, 0 Unchecked, 15.85ms Time], IncrementalHoareTripleChecker [43 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 5707.87ms Time] [2021-11-05 16:18:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82484 states. [2021-11-05 16:18:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82484 to 25820. [2021-11-05 16:18:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25820 states, 25335 states have (on average 1.311190053285968) internal successors, (33219), 25368 states have internal predecessors, (33219), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:18:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25820 states to 25820 states and 33868 transitions. [2021-11-05 16:18:28,661 INFO L78 Accepts]: Start accepts. Automaton has 25820 states and 33868 transitions. Word has length 261 [2021-11-05 16:18:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:18:28,661 INFO L470 AbstractCegarLoop]: Abstraction has 25820 states and 33868 transitions. [2021-11-05 16:18:28,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 7 states have internal predecessors, (255), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-05 16:18:28,661 INFO L276 IsEmpty]: Start isEmpty. Operand 25820 states and 33868 transitions. [2021-11-05 16:18:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-05 16:18:28,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:18:28,680 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:18:28,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-05 16:18:28,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-05 16:18:28,895 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:18:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:18:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 590469643, now seen corresponding path program 1 times [2021-11-05 16:18:28,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:18:28,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133698023] [2021-11-05 16:18:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:18:28,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:18:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:18:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:18:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:18:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:18:29,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:18:29,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133698023] [2021-11-05 16:18:29,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133698023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:18:29,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:18:29,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 16:18:29,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703745241] [2021-11-05 16:18:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:18:29,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:18:29,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:18:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:18:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:18:29,045 INFO L87 Difference]: Start difference. First operand 25820 states and 33868 transitions. Second operand has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 6 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:18:30,370 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 [] [2021-11-05 16:18:40,655 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 [] [2021-11-05 16:18:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:18:57,788 INFO L93 Difference]: Finished difference Result 90892 states and 117676 transitions. [2021-11-05 16:18:57,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 16:18:57,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 6 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 270 [2021-11-05 16:18:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:18:57,927 INFO L225 Difference]: With dead ends: 90892 [2021-11-05 16:18:57,927 INFO L226 Difference]: Without dead ends: 65320 [2021-11-05 16:18:57,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 65.58ms TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-05 16:18:57,975 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 1800 mSDsluCounter, 5973 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14519.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 7523 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.57ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14916.25ms IncrementalHoareTripleChecker+Time [2021-11-05 16:18:57,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 7523 Invalid, 702 Unknown, 0 Unchecked, 16.57ms Time], IncrementalHoareTripleChecker [45 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 14916.25ms Time] [2021-11-05 16:18:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65320 states. [2021-11-05 16:19:03,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65320 to 25930. [2021-11-05 16:19:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25930 states, 25445 states have (on average 1.309844763214777) internal successors, (33329), 25478 states have internal predecessors, (33329), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:19:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25930 states to 25930 states and 33978 transitions. [2021-11-05 16:19:03,172 INFO L78 Accepts]: Start accepts. Automaton has 25930 states and 33978 transitions. Word has length 270 [2021-11-05 16:19:03,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:19:03,173 INFO L470 AbstractCegarLoop]: Abstraction has 25930 states and 33978 transitions. [2021-11-05 16:19:03,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.714285714285715) internal successors, (201), 6 states have internal predecessors, (201), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:03,173 INFO L276 IsEmpty]: Start isEmpty. Operand 25930 states and 33978 transitions. [2021-11-05 16:19:03,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-05 16:19:03,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:19:03,193 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:19:03,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 16:19:03,193 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:19:03,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:19:03,193 INFO L85 PathProgramCache]: Analyzing trace with hash 925752807, now seen corresponding path program 1 times [2021-11-05 16:19:03,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:19:03,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823411081] [2021-11-05 16:19:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:19:03,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:19:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:19:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:19:03,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:19:03,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823411081] [2021-11-05 16:19:03,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823411081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:19:03,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:19:03,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:19:03,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922714502] [2021-11-05 16:19:03,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:19:03,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:19:03,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:19:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:19:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:19:03,320 INFO L87 Difference]: Start difference. First operand 25930 states and 33978 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:05,758 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 [] [2021-11-05 16:19:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:19:13,086 INFO L93 Difference]: Finished difference Result 53091 states and 69846 transitions. [2021-11-05 16:19:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:19:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-11-05 16:19:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:19:13,142 INFO L225 Difference]: With dead ends: 53091 [2021-11-05 16:19:13,142 INFO L226 Difference]: Without dead ends: 27174 [2021-11-05 16:19:13,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.04ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:19:13,185 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 67 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4689.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.41ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4839.65ms IncrementalHoareTripleChecker+Time [2021-11-05 16:19:13,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1977 Invalid, 305 Unknown, 0 Unchecked, 4.41ms Time], IncrementalHoareTripleChecker [16 Valid, 288 Invalid, 1 Unknown, 0 Unchecked, 4839.65ms Time] [2021-11-05 16:19:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27174 states. [2021-11-05 16:19:17,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27174 to 26030. [2021-11-05 16:19:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26030 states, 25545 states have (on average 1.3086318261890781) internal successors, (33429), 25578 states have internal predecessors, (33429), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:19:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26030 states to 26030 states and 34078 transitions. [2021-11-05 16:19:17,876 INFO L78 Accepts]: Start accepts. Automaton has 26030 states and 34078 transitions. Word has length 285 [2021-11-05 16:19:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:19:17,877 INFO L470 AbstractCegarLoop]: Abstraction has 26030 states and 34078 transitions. [2021-11-05 16:19:17,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 26030 states and 34078 transitions. [2021-11-05 16:19:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-05 16:19:17,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:19:17,895 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:19:17,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 16:19:17,896 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:19:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:19:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1438088855, now seen corresponding path program 1 times [2021-11-05 16:19:17,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:19:17,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500939356] [2021-11-05 16:19:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:19:17,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:19:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:19:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:19:18,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:19:18,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500939356] [2021-11-05 16:19:18,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500939356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:19:18,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:19:18,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:19:18,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608677206] [2021-11-05 16:19:18,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:19:18,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:19:18,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:19:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:19:18,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:19:18,131 INFO L87 Difference]: Start difference. First operand 26030 states and 34078 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:20,789 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 [] [2021-11-05 16:19:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:19:30,026 INFO L93 Difference]: Finished difference Result 54191 states and 71346 transitions. [2021-11-05 16:19:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:19:30,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-11-05 16:19:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:19:30,081 INFO L225 Difference]: With dead ends: 54191 [2021-11-05 16:19:30,081 INFO L226 Difference]: Without dead ends: 28174 [2021-11-05 16:19:30,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.35ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:19:30,106 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 99 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6928.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7135.55ms IncrementalHoareTripleChecker+Time [2021-11-05 16:19:30,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 2702 Invalid, 374 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [21 Valid, 352 Invalid, 1 Unknown, 0 Unchecked, 7135.55ms Time] [2021-11-05 16:19:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28174 states. [2021-11-05 16:19:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28174 to 26230. [2021-11-05 16:19:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26230 states, 25745 states have (on average 1.3062342202369392) internal successors, (33629), 25778 states have internal predecessors, (33629), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:19:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26230 states to 26230 states and 34278 transitions. [2021-11-05 16:19:34,742 INFO L78 Accepts]: Start accepts. Automaton has 26230 states and 34278 transitions. Word has length 285 [2021-11-05 16:19:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:19:34,742 INFO L470 AbstractCegarLoop]: Abstraction has 26230 states and 34278 transitions. [2021-11-05 16:19:34,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 26230 states and 34278 transitions. [2021-11-05 16:19:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-05 16:19:34,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:19:34,764 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:19:34,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-05 16:19:34,765 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:19:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:19:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1823951257, now seen corresponding path program 1 times [2021-11-05 16:19:34,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:19:34,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326323648] [2021-11-05 16:19:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:19:34,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:19:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:19:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:19:34,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:19:34,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326323648] [2021-11-05 16:19:34,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326323648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:19:34,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:19:34,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:19:34,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677702791] [2021-11-05 16:19:34,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:19:34,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:19:34,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:19:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:19:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:19:34,920 INFO L87 Difference]: Start difference. First operand 26230 states and 34278 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:37,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:19:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:19:46,501 INFO L93 Difference]: Finished difference Result 53891 states and 70646 transitions. [2021-11-05 16:19:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:19:46,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-11-05 16:19:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:19:46,555 INFO L225 Difference]: With dead ends: 53891 [2021-11-05 16:19:46,555 INFO L226 Difference]: Without dead ends: 27674 [2021-11-05 16:19:46,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.11ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:19:46,586 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 76 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6573.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6763.10ms IncrementalHoareTripleChecker+Time [2021-11-05 16:19:46,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 2712 Invalid, 362 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [21 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 6763.10ms Time] [2021-11-05 16:19:46,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27674 states. [2021-11-05 16:19:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27674 to 26430. [2021-11-05 16:19:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26430 states, 25945 states have (on average 1.3038735787242244) internal successors, (33829), 25978 states have internal predecessors, (33829), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:19:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26430 states to 26430 states and 34478 transitions. [2021-11-05 16:19:51,293 INFO L78 Accepts]: Start accepts. Automaton has 26430 states and 34478 transitions. Word has length 285 [2021-11-05 16:19:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:19:51,293 INFO L470 AbstractCegarLoop]: Abstraction has 26430 states and 34478 transitions. [2021-11-05 16:19:51,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 4 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 26430 states and 34478 transitions. [2021-11-05 16:19:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-05 16:19:51,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:19:51,314 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:19:51,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-05 16:19:51,315 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:19:51,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:19:51,315 INFO L85 PathProgramCache]: Analyzing trace with hash 8492011, now seen corresponding path program 1 times [2021-11-05 16:19:51,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:19:51,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385648497] [2021-11-05 16:19:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:19:51,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:19:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-05 16:19:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:19:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-05 16:19:51,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:19:51,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385648497] [2021-11-05 16:19:51,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385648497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:19:51,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:19:51,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:19:51,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424276082] [2021-11-05 16:19:51,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:19:51,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:19:51,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:19:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:19:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:19:51,506 INFO L87 Difference]: Start difference. First operand 26430 states and 34478 transitions. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 5 states have internal predecessors, (223), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:19:53,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:19:59,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:20:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:20:28,589 INFO L93 Difference]: Finished difference Result 157889 states and 201272 transitions. [2021-11-05 16:20:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 16:20:28,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 5 states have internal predecessors, (223), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-11-05 16:20:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:20:29,090 INFO L225 Difference]: With dead ends: 157889 [2021-11-05 16:20:29,090 INFO L226 Difference]: Without dead ends: 131712 [2021-11-05 16:20:29,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.26ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:20:29,162 INFO L933 BasicCegarLoop]: 1340 mSDtfsCounter, 3212 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6629.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.97ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6929.16ms IncrementalHoareTripleChecker+Time [2021-11-05 16:20:29,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3214 Valid, 5849 Invalid, 618 Unknown, 0 Unchecked, 17.97ms Time], IncrementalHoareTripleChecker [31 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 6929.16ms Time] [2021-11-05 16:20:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131712 states. [2021-11-05 16:20:35,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131712 to 26496. [2021-11-05 16:20:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26496 states, 26011 states have (on average 1.303102533543501) internal successors, (33895), 26044 states have internal predecessors, (33895), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:20:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26496 states to 26496 states and 34544 transitions. [2021-11-05 16:20:35,409 INFO L78 Accepts]: Start accepts. Automaton has 26496 states and 34544 transitions. Word has length 285 [2021-11-05 16:20:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:20:35,409 INFO L470 AbstractCegarLoop]: Abstraction has 26496 states and 34544 transitions. [2021-11-05 16:20:35,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 5 states have internal predecessors, (223), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:20:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 26496 states and 34544 transitions. [2021-11-05 16:20:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-05 16:20:35,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:20:35,436 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:20:35,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-05 16:20:35,436 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:20:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:20:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 154443015, now seen corresponding path program 1 times [2021-11-05 16:20:35,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:20:35,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532875765] [2021-11-05 16:20:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:20:35,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:20:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:20:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-05 16:20:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:20:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:20:35,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:20:35,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532875765] [2021-11-05 16:20:35,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532875765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:20:35,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:20:35,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:20:35,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815785119] [2021-11-05 16:20:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:20:35,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:20:35,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:20:35,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:20:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:20:35,620 INFO L87 Difference]: Start difference. First operand 26496 states and 34544 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:20:38,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:20:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:20:48,663 INFO L93 Difference]: Finished difference Result 60365 states and 78612 transitions. [2021-11-05 16:20:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:20:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-11-05 16:20:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:20:48,732 INFO L225 Difference]: With dead ends: 60365 [2021-11-05 16:20:48,732 INFO L226 Difference]: Without dead ends: 34122 [2021-11-05 16:20:48,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.94ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:20:48,768 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 583 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6002.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6220.94ms IncrementalHoareTripleChecker+Time [2021-11-05 16:20:48,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 2150 Invalid, 343 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [12 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 6220.94ms Time] [2021-11-05 16:20:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34122 states. [2021-11-05 16:20:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34122 to 26430. [2021-11-05 16:20:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26430 states, 25945 states have (on average 1.3013297359799576) internal successors, (33763), 25978 states have internal predecessors, (33763), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:20:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26430 states to 26430 states and 34412 transitions. [2021-11-05 16:20:54,064 INFO L78 Accepts]: Start accepts. Automaton has 26430 states and 34412 transitions. Word has length 287 [2021-11-05 16:20:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:20:54,064 INFO L470 AbstractCegarLoop]: Abstraction has 26430 states and 34412 transitions. [2021-11-05 16:20:54,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:20:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 26430 states and 34412 transitions. [2021-11-05 16:20:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-05 16:20:54,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:20:54,087 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:20:54,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-05 16:20:54,087 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:20:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:20:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1917771513, now seen corresponding path program 1 times [2021-11-05 16:20:54,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:20:54,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697024495] [2021-11-05 16:20:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:20:54,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:20:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:20:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-05 16:20:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:20:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:20:54,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:20:54,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697024495] [2021-11-05 16:20:54,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697024495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:20:54,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:20:54,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:20:54,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126258340] [2021-11-05 16:20:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:20:54,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:20:54,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:20:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:20:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:20:54,247 INFO L87 Difference]: Start difference. First operand 26430 states and 34412 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:20:55,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:20:56,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:20:59,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:21:01,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:21:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:21:08,566 INFO L93 Difference]: Finished difference Result 60233 states and 78348 transitions. [2021-11-05 16:21:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:21:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-11-05 16:21:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:21:08,643 INFO L225 Difference]: With dead ends: 60233 [2021-11-05 16:21:08,644 INFO L226 Difference]: Without dead ends: 34056 [2021-11-05 16:21:08,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.40ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:21:08,688 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 562 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6840.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.47ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7098.54ms IncrementalHoareTripleChecker+Time [2021-11-05 16:21:08,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 2163 Invalid, 340 Unknown, 0 Unchecked, 6.47ms Time], IncrementalHoareTripleChecker [12 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 7098.54ms Time] [2021-11-05 16:21:08,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34056 states. [2021-11-05 16:21:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34056 to 26364. [2021-11-05 16:21:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26364 states, 25879 states have (on average 1.2995478959774334) internal successors, (33631), 25912 states have internal predecessors, (33631), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:21:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26364 states to 26364 states and 34280 transitions. [2021-11-05 16:21:14,231 INFO L78 Accepts]: Start accepts. Automaton has 26364 states and 34280 transitions. Word has length 287 [2021-11-05 16:21:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:21:14,232 INFO L470 AbstractCegarLoop]: Abstraction has 26364 states and 34280 transitions. [2021-11-05 16:21:14,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:21:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26364 states and 34280 transitions. [2021-11-05 16:21:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-05 16:21:14,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:21:14,256 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:21:14,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-05 16:21:14,257 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:21:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:21:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash 658679047, now seen corresponding path program 1 times [2021-11-05 16:21:14,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:21:14,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278196586] [2021-11-05 16:21:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:21:14,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:21:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:21:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-05 16:21:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:21:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:21:14,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:21:14,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278196586] [2021-11-05 16:21:14,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278196586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:21:14,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:21:14,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:21:14,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046396160] [2021-11-05 16:21:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:21:14,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:21:14,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:21:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:21:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:21:14,464 INFO L87 Difference]: Start difference. First operand 26364 states and 34280 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:21:15,536 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 [] [2021-11-05 16:21:21,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:21:23,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:21:25,168 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 [] [2021-11-05 16:21:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:21:33,885 INFO L93 Difference]: Finished difference Result 70031 states and 90273 transitions. [2021-11-05 16:21:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:21:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-11-05 16:21:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:21:33,959 INFO L225 Difference]: With dead ends: 70031 [2021-11-05 16:21:33,959 INFO L226 Difference]: Without dead ends: 43680 [2021-11-05 16:21:33,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.57ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:21:33,990 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 528 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9136.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.66ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9408.30ms IncrementalHoareTripleChecker+Time [2021-11-05 16:21:33,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2388 Invalid, 342 Unknown, 0 Unchecked, 8.66ms Time], IncrementalHoareTripleChecker [17 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 9408.30ms Time] [2021-11-05 16:21:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43680 states. [2021-11-05 16:21:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43680 to 26064. [2021-11-05 16:21:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26064 states, 25579 states have (on average 1.2913327338832636) internal successors, (33031), 25612 states have internal predecessors, (33031), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:21:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26064 states to 26064 states and 33680 transitions. [2021-11-05 16:21:39,772 INFO L78 Accepts]: Start accepts. Automaton has 26064 states and 33680 transitions. Word has length 287 [2021-11-05 16:21:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:21:39,772 INFO L470 AbstractCegarLoop]: Abstraction has 26064 states and 33680 transitions. [2021-11-05 16:21:39,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:21:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 26064 states and 33680 transitions. [2021-11-05 16:21:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-05 16:21:39,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:21:39,800 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:21:39,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-05 16:21:39,800 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:21:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:21:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash -306304761, now seen corresponding path program 1 times [2021-11-05 16:21:39,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:21:39,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812299063] [2021-11-05 16:21:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:21:39,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:21:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:21:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-05 16:21:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:21:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:21:40,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:21:40,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812299063] [2021-11-05 16:21:40,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812299063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:21:40,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:21:40,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:21:40,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636676701] [2021-11-05 16:21:40,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:21:40,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:21:40,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:21:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:21:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:21:40,118 INFO L87 Difference]: Start difference. First operand 26064 states and 33680 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:21:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:21:49,421 INFO L93 Difference]: Finished difference Result 53044 states and 68808 transitions. [2021-11-05 16:21:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:21:49,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-11-05 16:21:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:21:49,483 INFO L225 Difference]: With dead ends: 53044 [2021-11-05 16:21:49,483 INFO L226 Difference]: Without dead ends: 27230 [2021-11-05 16:21:49,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.34ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:21:49,518 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 67 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3207.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3374.57ms IncrementalHoareTripleChecker+Time [2021-11-05 16:21:49,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1915 Invalid, 272 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [12 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 3374.57ms Time] [2021-11-05 16:21:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27230 states. [2021-11-05 16:21:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27230 to 26086. [2021-11-05 16:21:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26086 states, 25601 states have (on average 1.2910823795945472) internal successors, (33053), 25634 states have internal predecessors, (33053), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:21:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 33702 transitions. [2021-11-05 16:21:55,052 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 33702 transitions. Word has length 287 [2021-11-05 16:21:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:21:55,052 INFO L470 AbstractCegarLoop]: Abstraction has 26086 states and 33702 transitions. [2021-11-05 16:21:55,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:21:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 33702 transitions. [2021-11-05 16:21:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-05 16:21:55,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:21:55,080 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:21:55,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-05 16:21:55,080 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:21:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:21:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash -237906948, now seen corresponding path program 1 times [2021-11-05 16:21:55,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:21:55,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965396185] [2021-11-05 16:21:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:21:55,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:21:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:21:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-05 16:21:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:21:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:21:55,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:21:55,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965396185] [2021-11-05 16:21:55,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965396185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:21:55,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336574917] [2021-11-05 16:21:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:21:55,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:21:55,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:21:55,377 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:21:55,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 16:21:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:21:56,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 3087 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 16:21:56,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:21:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:21:56,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:21:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2021-11-05 16:21:56,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336574917] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-05 16:21:56,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:21:56,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2021-11-05 16:21:56,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710644416] [2021-11-05 16:21:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:21:56,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:21:56,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:21:56,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:21:56,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:21:56,889 INFO L87 Difference]: Start difference. First operand 26086 states and 33702 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:22:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:22:08,583 INFO L93 Difference]: Finished difference Result 70872 states and 90997 transitions. [2021-11-05 16:22:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:22:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 288 [2021-11-05 16:22:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:22:08,684 INFO L225 Difference]: With dead ends: 70872 [2021-11-05 16:22:08,685 INFO L226 Difference]: Without dead ends: 44799 [2021-11-05 16:22:08,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 46.51ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:22:08,718 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 494 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 637.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.56ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 717.25ms IncrementalHoareTripleChecker+Time [2021-11-05 16:22:08,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 2251 Invalid, 142 Unknown, 0 Unchecked, 5.56ms Time], IncrementalHoareTripleChecker [33 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 717.25ms Time] [2021-11-05 16:22:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44799 states. [2021-11-05 16:22:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44799 to 26540. [2021-11-05 16:22:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26540 states, 26055 states have (on average 1.2928036845135291) internal successors, (33684), 26088 states have internal predecessors, (33684), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:22:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26540 states to 26540 states and 34333 transitions. [2021-11-05 16:22:14,682 INFO L78 Accepts]: Start accepts. Automaton has 26540 states and 34333 transitions. Word has length 288 [2021-11-05 16:22:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:22:14,682 INFO L470 AbstractCegarLoop]: Abstraction has 26540 states and 34333 transitions. [2021-11-05 16:22:14,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:22:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 26540 states and 34333 transitions. [2021-11-05 16:22:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-05 16:22:14,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:22:14,711 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:22:14,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-05 16:22:14,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-05 16:22:14,935 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:22:14,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:22:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash 759978949, now seen corresponding path program 1 times [2021-11-05 16:22:14,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:22:14,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341647091] [2021-11-05 16:22:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:22:14,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:22:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:22:15,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-05 16:22:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:22:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-11-05 16:22:15,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:22:15,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341647091] [2021-11-05 16:22:15,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341647091] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:22:15,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723583115] [2021-11-05 16:22:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:22:15,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:22:15,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:22:15,303 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:22:15,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 16:22:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:22:15,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 16:22:15,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:22:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-11-05 16:22:16,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:22:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2021-11-05 16:22:16,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723583115] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-05 16:22:16,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-05 16:22:16,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2021-11-05 16:22:16,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279527008] [2021-11-05 16:22:16,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:22:16,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:22:16,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:22:16,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:22:16,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:22:16,724 INFO L87 Difference]: Start difference. First operand 26540 states and 34333 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:22:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:22:30,763 INFO L93 Difference]: Finished difference Result 69715 states and 89350 transitions. [2021-11-05 16:22:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:22:30,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 290 [2021-11-05 16:22:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:22:30,838 INFO L225 Difference]: With dead ends: 69715 [2021-11-05 16:22:30,838 INFO L226 Difference]: Without dead ends: 43188 [2021-11-05 16:22:30,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.58ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:22:30,870 INFO L933 BasicCegarLoop]: 1028 mSDtfsCounter, 461 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2662.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2748.79ms IncrementalHoareTripleChecker+Time [2021-11-05 16:22:30,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2683 Invalid, 72 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 2748.79ms Time] [2021-11-05 16:22:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43188 states. [2021-11-05 16:22:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43188 to 26540. [2021-11-05 16:22:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26540 states, 26055 states have (on average 1.2889656495874113) internal successors, (33584), 26088 states have internal predecessors, (33584), 297 states have call successors, (297), 176 states have call predecessors, (297), 187 states have return successors, (352), 319 states have call predecessors, (352), 297 states have call successors, (352) [2021-11-05 16:22:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26540 states to 26540 states and 34233 transitions. [2021-11-05 16:22:36,793 INFO L78 Accepts]: Start accepts. Automaton has 26540 states and 34233 transitions. Word has length 290 [2021-11-05 16:22:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:22:36,793 INFO L470 AbstractCegarLoop]: Abstraction has 26540 states and 34233 transitions. [2021-11-05 16:22:36,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 16:22:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26540 states and 34233 transitions. [2021-11-05 16:22:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-05 16:22:36,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:22:36,813 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 7, 7, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:22:36,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-05 16:22:37,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:22:37,024 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:22:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:22:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash 51886179, now seen corresponding path program 1 times [2021-11-05 16:22:37,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:22:37,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080582938] [2021-11-05 16:22:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:22:37,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:22:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:22:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-05 16:22:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:22:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2021-11-05 16:22:37,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:22:37,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080582938] [2021-11-05 16:22:37,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080582938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:22:37,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827203519] [2021-11-05 16:22:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:22:37,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:22:37,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:22:37,452 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:22:37,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process